FEATURES. Pd-Free Package Temperature Order Part Number Transport Media Marking. PT5381 XXXXXC Note: THD+N(%) 0.1
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1 GENERAL DESCRIPTION The PT538 is an audio power amplifier mainly designed for applications in mobile phones and other portable communication device applications. It is capable of delivering.25 watts of continuous average power to an 8Ω load and 2 watts of continuous average power to a 4Ω load with less than % distortion (THD+N) from a 5V power supply. The PT538 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage applications where minimal power consumption is a primary requirement. The PT538 features a low-power shutdown mode and improved pop & click circuitry that attenuates noise which would otherwise occur during turn on and turn off transactions. The PT538 is delivered with miniature MSOP-8 (Pd free). APPLICATION Mobil Phones PDAs Portable electronic devices ORDERING INFORMATION PT538 FEATURES Low Distortion VDD=5.0V, R L =8Ω THD+N = 0.03% VDD=3.0V, R L =8Ω THD+N = 0.04% VDD=2.6V, R L =8Ω THD+N = 0.05% Output % VDD=5.0V, RL=8Ω VDD=5.0V, RL=4Ω VDD=3.0V, RL=8Ω VDD=3.0V, RL=4Ω VDD=2.6V, RL=8Ω VDD=2.6V, RL=4Ω Ultra low shutdown current Improved pop & click noise eliminating function No need for output coupling or bootstrap capacitors V operation supply voltage Thermal protection External gain configuration capability Pd free MSOP-8 packages Unity-gain stable Pd-Free Package Temperature Order Part Number Transport Media Marking MSOP-8-40 o C to 85 o C PT538EMSO Tape and Reel PT538 XXXXXC Note: xxxxxx Assembly Factory Code Lot Number TYPICAL APPLICATION KEY PERFORMANCE CHART C i 0.39μ C B μf R i 20k Shutdown control R F -I +I + Bypass Shutdown BIA VD GND + C S μ Vo Vo 8 THD+N vs Output Power VDD=5.0V,RL=4.0ohm, f=khz 0 0. Figure. Typical Audio Amplifier Application Circuit Output Power(mW) China Resources Powtech (Shanghai) Limited Page PT538_DS Rev EN_.0,
2 PT538 PIN ASSIGNMENT 2 3 Shutdown Bypass +IN Vo2 GND VDD A B -IN GND Vo GND +IN VDD 4 -IN Vo 5 C Bypass Vo2 Shutdown PIN DESCRIPTIONS MSOP8 Top View 2 SMD Top View 3 P MSOP8 Names Description Shutdown Turn-on or turn-off the chip 2 Bypass Set the common voltage 3 +IN The non-inverting input node 4 -IN The inverting input node 5 Vo The st node of outputs 6 VDD Power supply 2.5~5.5V 7 GND ground 8 Vo2 The 2 nd node of outputs ABSOLUTE MAXIMUM RATINGS (Note ) ITEMS VALUE UNIT Supply Voltage 6 V Input Voltage -0.3~VDD+0.3 V Thermal Resistance, MSOP8: Θ JA /Θ JC 90/56 /W Thermal Resistance, BGA9: Θ JA /Θ JC (Note 4) 80/56 /W Power Dissipation (Notes 9, 0) Internal limited Operating Temperature -40 to 85 ESD Susceptibility (Note 5) 2500 V Storage Temperature -65 to 50 Package Lead Soldering Temperature 260, 0s RECOMMENDED OPERATING RANGE (Note 2) SYMBOL PARAMETER VALUE T A Temperature Range -40 C T A 85 C V DD Supply Voltage 2.2V V DD 5.5V China Resources Powtech (Shanghai) Limited Page2 PT538_DS Rev EN_.0,
3 PT538 ELECTRICAL CHARACTERISTICS V DD = 5V (Notes 3, 6) The following specifications apply for the circuit shown in Figure, unless otherwise specified. TA = 25 C. Symbol Items Conditions Typical Limit Units I dd Quiescent Power Supply Current V in =0V,I O =0A,No Load ma V in =0V,I O =0A, 8Ω Load ma I sd Shutdown current V shutdown =0 (Note 7) 0. 2 ua V sdih Shutdown Voltage Input High.6 V V sdil Shutdown Voltage Input Low.4 V V os Output Offset Voltage.3 7 mv Po Output Power (8Ω Load) f=k; THD+N=% (max) W Output Power (4Ω Load) f=k; THD+N=% (max) 2 W T wu Wake-up time 46 ms THD Total Harmonic Distortion + Noise Po=0.5Wrms; f=k, 8Ω Load 0.03 % PSRR Power Supply Rejection Ratio Input float, V ripple =200mV sine wave p-p Input terminated with 0Ω, V ripple =200mV sine wave p-p 90 (f=27hz), 79 (f=k) 7 (f=27hz), 69 (f=k) Ro Resistor Output to GND (Note 8).0 57 (min) db 9.7 kω(min) 2.5 kω(max) ELECTRICAL CHARACTERISTICS V DD = 3V (Notes 3, 6) The following specifications apply for the circuit shown in Figure, unless otherwise specified. TA = 25 C. Symbol Items Conditions Typical Limit Units I dd Quiescent Power Supply Current V in =0V, Io=0A, No Load ma V in =0V, Io=0A, 8Ω Load ma I sd Shutdown current V shutdown =0 (Note 7) 0. 2 ua V sdih Shutdown Voltage Input High. V V sdil Shutdown Voltage Input Low.0 V V os Output Offset Voltage.3 7 mv Po Output Power (8Ω Load) f=k;thd+n=%(max) 425 mw Output Power (4Ω Load) f=k;thd+n=% (max) 600 mw T wu Wake-up time 50 ms THD Total Harmonic Distortion + Noise Po=0.25Wrms;f=k,8Ω Load 0.04 % China Resources Powtech (Shanghai) Limited Page3 PT538_DS Rev EN_.0,
4 PT538 ELECTRICAL CHARACTERISTICS V DD = 3V (Continued)(Notes 3, 6) The following specifications apply for the circuit shown in Figure, unless otherwise specified. TA = 25 C. Symbol Items Conditions Typical Limit Units PSRR Power Supply Rejection Ratio Input float, V ripple =200mV sine wave p-p Input terminated with 0Ω, V ripple =200mV sine wave p-p 88 (f=27), 79 (f=k) 67 (f=27), 68 (f=k) Ro Resistor Output to GND (Note 8).0 55 (min) db 9.7 kω(min) 2.5 kω(max) ELECTRICAL CHARACTERISTICS V DD = 2.6V (Notes 3, 6) The following specifications apply for the circuit shown in Figure, unless otherwise specified. TA = 25 C. Symbol Items Conditions Typical Limit Units I dd Quiescent Power Supply Current V in =0V, Io=0A, No Load ma V in =0V, Io=0A, 8Ω Load ma I sd Shutdown current V shutdown =0 (Note 7) 0. 2 ua V sdih Shutdown Voltage Input High V V sdil Shutdown Voltage Input Low 0.9 V V os Output Offset Voltage.3 7 mv Po Output Power (8Ω Load) f=k;thd+n=%(max) 300 mw Output Power (4Ω Load) f=k;thd+n=% (max) 400 mw T wu Wake-up time 53 ms THD Total Harmonic Distortion + Noise Po=0.5Wrms; f=k, 8Ω Load 0.05 % PSRR Power Supply Rejection Ratio Input terminated with 0Ω, V ripple =200mV sine wave p-p 66 (f=27), 68 (f=k) Ro Resistor Output to GND (Note 8).0 db 9.7 kω(min) 2.5 kω(max) Note : Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Note 2: Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. Note 3: Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit is given, however, the typical value is a good indication of device performance. Note 4: All bumps have the thermal resistance and contribute equally when used to lower thermal resistance. All bumps must connected to achieve specified thermal resistance China Resources Powtech (Shanghai) Limited Page4 PT538_DS Rev EN_.0,
5 Note 5: Human body model, 00pF discharged through a.5kω resistor. PT538 Note 6: Typical means that measured at 25 C and represent the parametric norm. Limit indicates that are guaranteed by PowTech s quality control standards. Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis. Note 7: For micro SMD package, shutdown current is measured in a Normal Room Environment. Exposure to direct sunlight will increase ISD by a maximum of 2µA. Note 8: R O is measured from the output pin to ground. This value represents the parallel combination of the 5kΩ output resistors and the two resistors. Note 9: The maximum power dissipation must be derated at elevated temperatures and is dictated by T JMAX, θ JA, and the ambient temperature T A. The maximum allowable power dissipation is P DMAX = (T JMAX T A )/θ JA or the number given in Absolute Maximum Ratings, whichever is lower. For the PT538, see power derating curves for additional information. Note 0: Maximum power dissipation in the device (PDMAX) occurs at an output power level significantly below full output power. PDMAX can be calculated using Equation shown in the Application Information section. It may also be obtained from the power dissipation graphs. EXTERNAL COMPONENTS DESCRIPTION See Figure. Components Functional Description R i Inverting input resistor that sets the closed-loop gain together with R F. This resistor also performs as a high pass filter with C i at f C = /(2πR i C i ) 2 C i Input coupling capacitor which blocks the DC voltage at the input terminals. It also creates a high pass filter with R i at f C = /(2πR i C i ). For more details of how to determine the value of C i, look at the section of Proper Selection of External Components. 3 R F Feedback resistor which sets the closed-loop gain together with R F. 4 C S Supply bypass capacitor which provides supply voltage filtering. For more details of how to determine the value of C B, refer to the section of Power Supply Bypassing. 5 C B Bypass pin capacitor which provides half-supply filtering. For more details of how to determine the value of C B, look at the section of Proper Selection of External Components. TYPICAL FERFORMANCE CHARACTERISTICS 0 THD+N vs Frequency VDD=5.0V,RL=4.0ohm,Po=W THD+N vs Output Power VDD=5.0V,RL=4.0ohm,f=KHz Output Power(mW) China Resources Powtech (Shanghai) Limited Page5 PT538_DS Rev EN_.0,
6 PT538 TYPICAL FERFORMANCE CHARACTERISTICS (Continued) 0 THD+N vs Frequency VDD=5.0V,RL=8.0ohm,Po=500mW 0 THD+N vs Frequency VDD=3.0V,RL=8.0ohm,Po=250mW THD+N vs Frequency VDD=3V, RL=4Ω, and Po=500mW 0 THD+N vs Frequency VDD=2.6V,RL=8.0ohm,Po=50mW THD(%) F(Hz) THD+N vs Frequency VDD=2.6V,RL=4Ω,Po=50mW THD+N vs Output Power VDD=5.0V,RL=8.0 ohm,f=khz THD(%) F(Hz) Output Power(mW) China Resources Powtech (Shanghai) Limited Page6 PT538_DS Rev EN_.0,
7 PT538 0 THD+N vs Output Power Vdd=3V,RL=4Ω,and f=khz 0 THD+N vs Output Power VDD=3.0V,RL=8.0 ohm,f=khz THD(%) OUTPUT POWER(mW) Output Power(mW) 0 THD+N vs Ouput Power Vdd=2.6V, RL=4Ω,f=KHz 0 THD+N vs Output Power VDD=2.6V,RL=8.0ohm,f=KHz THD(%) OUTPUT POWER(mW) Output Power(mW) PSRR(dB) PSRR vs Frequency VDD=5.0V,RL=8.0ohm,Input to GND PSRR(dB) PSRR vs Frequency VDD=3.0V,RL=8.0ohm,Input to GND China Resources Powtech (Shanghai) Limited Page7 PT538_DS Rev EN_.0,
8 PT538 PSRR(dB) PSRR vs Frequency VDD=2.6V,RL=8.0ohm,Input to GND Power Dissipation(W) Power Dissipation vs Output Power VDD=5.0V 4ohm 8ohm Output Power(W) 0.50 Power Dissipation vs Output Power VDD=3.0V 0.40 Power Dissipation vs Output Power VDD=2.6V ohm ohm Power Dissipation(W) ohm Power Dissipation(W) ohm Output Power(W) Output Power(W) -30 PSRR vs Frequency VDD=5.0V,RL=8ohm,Input Float -30 PSRR vs Frequency VDD=3.0V,RL=8ohm,Input Float PSRR (db) PSRR (db) Frequency (Hz) Frequency (Hz) China Resources Powtech (Shanghai) Limited Page8 PT538_DS Rev EN_.0,
9 PT Noise Floor VDD=5.0V,RL=8.0ohm Input to GND Output Noise Voltage(uV) APPLICATION INFORMATION Bridge Configuration Explanation As shown in Figure, the PT538 has two internal operational amplifiers. The first amplifier s gain is externally configurable, while the second amplifier is internally fixed in a unity-gain, inverting configuration. The closed-loop gain of the first amplifier is set by selecting the ratio of R F to R i while the second amplifier s gain is fixed by the two internal resistors. Figureshows that the output of amplifier one serves as the input to amplifier two which results in both amplifiers producing signals identical in magnitude, but out of phase by 80. Consequently, the differential gain for the IC is A VD = 2 *(R F /R i ) By driving the load differentially through outputs Vo and Vo2, an amplifier configuration commonly referred to as bridged mode is established. Bridged mode operation is different from the classical single-ended amplifier configuration where one side of the load is connected to ground. A bridge amplifier design has a few distinct advantages over the single-ended configuration, as it provides differential drive to the load, thus doubling output swing for a specified supply voltage. Four times the output power is possible as compared to a single-ended amplifier under the same conditions. This increase in attainable output power assumes that the amplifier is not current limited or clipped. In order to choose an amplifier s closed-loop gain without causing excessive clipping, please refer to the Audio Power Amplifier Design section. A bridge configuration, such as the one used in PT538, also creates a second advantage over single-ended amplifiers. Since the differential outputs, Vo and Vo2, are biased at half-supply, no net DC voltage exists across the load. This eliminates the need for an output coupling capacitor which is required in a single supply, single-ended amplifier configuration. Without an output coupling capacitor, the half-supply bias across the load would result in both increased internal IC power dissipation and also possible loudspeaker damage. Power Dissipation Power dissipation is a major concern when designing a successful amplifier, whether the amplifier is bridged or single-ended. A direct consequence of the increased power delivered to the load by a bridge amplifier is an increase in internal power dissipation. Since the PT538 has two operational amplifiers in one package, the maximum internal power dissipation is 4 times that of a single-ended amplifier. The maximum power dissipation for a given application can be derived from the power dissipation graphs or from Equation. P DMAX = 4*(V DD ) 2 /(2π 2 R L ) () It is critical that the maximum junction temperature T JMAX of 50 C is not exceeded. T JMAX can be determined from the power derating curves by using P DMAX and the PC board foil area. By adding copper foil, the thermal resistance of the application can be reduced from the free air value of θ JA, resulting in higher P DMAX values without thermal shutdown protection circuitry being activated. Additional copper foil can be added to any of the leads connected to the PT538. It is China Resources Powtech (Shanghai) Limited Page9 PT538_DS Rev EN_.0,
10 PT538 especially effective when connected to V DD, GND, and the output pins. If T JMAX still exceeds 50 C, then additional changes must be made. These changes can include reduced supply voltage, higher load impedance, or reduced ambient temperature. Internal power dissipation is a function of output power. Refer to the Typical Performance Characteristics curves for power dissipation information for different output powers and output loading. Power Supply Bypassing As with any amplifier, proper supply bypassing is critical for low noise performance and high power supply rejection. The capacitor location on both the bypass and power supply pins should be as close to the device as possible. Typical applications employ a 5V regulator with 0µF tantalum or electrolytic capacitor and a ceramic bypass capacitor which aid in supply stability. This does not eliminate the need for bypassing the supply nodes of the PT538. The selection of a bypass capacitor, especially C B, is dependent upon PSRR requirements, click and pop performance (as explained in the section, Proper Selection of External Components), system cost, and size constraints. Shutdown Function In order to reduce power consumption while not in use, the PT538 contains shutdown circuitry that is used to turn off the amplifier s bias circuitry whenever the Shutdown pin is put at logical low. While the device may be disabled with shutdown voltages in between ground and supply, the idle current may be greater than the typical value of 0.µA. Therefore, the shutdown pin should be tied to a definite voltage to avoid unwanted state changes. In many applications, a microcontroller or microprocessor output is used to control the shutdown circuitry, which provides a quick, smooth transition to shutdown. Another solution is to use a single-throw switch in conjunction with an external pull-up resistor (or pull-down, depending on shutdown high or low application). This scheme guarantees that the shutdown pin will not float, thus preventing unwanted state changes. Proper Selection of External Components Proper selection of external components in applications using integrated power amplifiers is critical to optimize device and system performance. While the PT538 is tolerant of external component combinations, consideration to component values must be used to maximize overall system quality. The PT538 is unity-gain stable which gives the designer maximum system flexibility. The PT538 should be used in low gain configurations to minimize THD+N+N values, and maximize the signal to noise ratio. Low gain configurations require large input signals to obtain a given output power. Input signals equal to or greater than Vrms are available from sources such as audio codecs. Please refer to the section, Audio Power Amplifier Design, for a more complete explanation of proper gain selection. Besides gain, one of the major considerations is the closed loop bandwidth of the amplifier. To a large extent, the bandwidth is dictated by the choice of external components shown in Figure. The input coupling capacitor, C i, forms a first order high pass filter which limits low frequency response. This value should be chosen based on needed frequency response for a few distinct reasons. Large input capacitors are both expensive and space hungry for portable designs. Clearly, a certain sized capacitor is needed to couple in low frequencies without severe attenuation. But in many cases the speakers used in portable systems, whether internal or external, have little ability to reproduce signals below 00Hz to 50Hz. Thus, using a large input capacitor may not increase actual system performance. In addition to system cost and size, click and pop performance is effected by the size of the input coupling capacitor, i. A larger input coupling capacitor requires more charge to reach its quiescent DC voltage (nominally /2 VDD). This charge comes from the output via the feedback and is apt to create pops upon device enable. Thus, by minimizing the capacitor size based on necessary low frequency response, turn-on pops can be minimized. Besides minimizing the input capacitor size, careful consideration should be paid to the bypass capacitor value. Bypass capacitor, C B, is the most critical component to minimize turn-on pops since it determines how fast the PT538 turns on. The slower the PT538 s outputs ramp to their quiescent DC voltage (nominally /2 V DD ), the smaller the turn-on pop. Choosing C B equal to.0µf along with a small value of C i (in the range of 0.µF to 0.39µF), should produce a virtually pop & click free shutdown function. While the device will function properly, (no oscillations or motorboating), with C B equal to 0.µF, the device will be much more susceptible to turn-on clicks and pops. Thus, a value of C B equal to.0µf is recommended in all but the most cost sensitive designs. China Resources Powtech (Shanghai) Limited Page0 PT538_DS Rev EN_.0,
11 Audio Power Amplifier Design A W/8Ω Audio Amplifier Given: Power Output Load Impedance Input Level Input Impedance Bandwidth Wrms 8Ω Vrms 00Hz 20kHz ± 0.25dB 5V is a standard voltage in most applications, it is chosen for the supply rail. Extra supply voltage creates headroom that allows the PT538 to reproduce peaks in excess of W without producing audible distortion. At this time, the designer must make sure that the power supply choice along with the output impedance does not violate the conditions explained in the Power Dissipation section. Once the power dissipation equations have been addressed, the required differential gain can be determined from Equation 2. ( PO PL )/( VIN ) = Vorms Vinrms A VD = / (2) R = F / Ri AVD From Equation 2, the minimum A VD is 2.83; use A VD =3. Since the desired input impedance was, and with an A VD impedance of 2, a ratio of.5: of R F to R i results in an allocation of R i = and R F = 30kΩ. The final design step is to address the bandwidth requirements which must be stated as a pair of 3dB frequency points. Five times away from a 3dB point is 0.7dB down from passband response which is better than the required ±0.25dB specified. f L = 00Hz/5 = 20Hz f H = 20kHz 5= 00kHz / 2 As mentioned in the External Components section, R i in conjunction with Ci create a high-pass filter. C i /(2π 20Hz) = 0.397µF; use 0.39µF The high frequency pole is determined by the product of the desired frequency pole, f H, and the differential gain, A VD. With an A VD = 3 and f H = 00kHz, the resulting GBWP = 300kHz which is much smaller than the PT538 GBWP of 2.0MHz. This figure displays that if a designer has a need to design an amplifier with a higher differential gain, the PT538 can still be used without running into bandwidth limitations. PT538 R 00k The PT538 is unity gain stable and requires no external components besides gain-setting resistors, an input coupling capacitor, and proper supply bypass in the typical application. However, if a closed-loop gain is much greater than the normal setting value (i.e. gain = 0), a feedback capacitor (C 4 ) may be required as shown in Figure 2. to limit the bandwidth of the amplifier. The feedback capacitor creates a low pass filter that eliminates the possible high frequency oscillations. Be aware that an possible inadequate combination of R3 and C4 will cause roll-off before 20kHz. A typical combination is R 3 = and C 4 = 25pf. Users could refer this combination when design a high gain audio amplifier. C 2 039μ C 4 039μ R 00k C μ C 3 μf C 4 R 2 R 2 20k R 5 20k R 6 20k C 3 μf R 3 -I +I + Bypass Shutdown BIA VDD GND + C μf Vo Vo Figure 2. High Gain Audio Amplifier R 3 20k -I +I + Bypass Shutdown BIA VD GND + C μ Vo Figure 3. Fully-differential Application for PT538 Vo 8 8 China Resources Powtech (Shanghai) Limited Page PT538_DS Rev EN_.0,
12 PT538 PACKAGE INFORMATION MSOP8 Package b e c θ D A2 A SYMBOL MILLIMETERS INCHES MIN MAX MIN MAX A A A b c D e 0.650(BSC) 0.026(BSC) E E L θ China Resources Powtech (Shanghai) Limited Page2 PT538_DS Rev EN_.0,
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1W Class-AB AUDIO POWER AMPLIFIER General Description : The AP4890 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications.
j Quiscent Power Supply Current j P OUT Features
LM4952 3.1W Stereo-SE Audio Power Amplifier with DC Volume Control General Description The LM4952 is a dual audio power amplifier primarily designed for demanding applications in flat panel monitors and
DATA SHEET. Filterless, 2.8W, Mono Class-D Audio Power Amplifier
GK2305LD Filterless, 2.8W, Mono Class-D Audio Power Amplifier General Description ---The GK2305LD is a 2.8W high efficiency, filterless Class-D audio amplifier in a DFN or MSOP package. A filterless PWM
LM9022 Vacuum Fluorescent Display Filament Driver
Vacuum Fluorescent Display Filament Driver General Description The LM9022 is a bridged power amplifier capable of delivering typically 2W of continuous average power into a 10Ω filament load when powered
Filterless 3W Class- D Mono Audio Amplifier
Preliminary Datasheet LPA00 Filterless 3W Class- D Mono Audio Amplifier General Description The LPA00 is a 3W, class-d audio amplifier. It offers low THD+N, allowing it to achieve high-quality Power Supply
AF Watt CLASS-AB Audio Power Amplifier 1 / 11. Features. General Description. Applications AF-V3.0. Analog Future. Package Information
1 Watt CLASS-AB Audio Power Amplifier Features PSRR at 217Hz, VDD = 5V (Fig. 1) 62dB(typ.) Power Output at 5.0V & 1% THD 1W(typ.) Power Output at 3.3V & 1% THD 400mW(typ.) Shutdown Current 0.1μA(typ.)
SGM Watt Audio Power Amplifier GENERAL DESCRIPTION FEATURES. PIN CONFIGURATIONS (Top View) APPLICATIONS
. Watt Audio Power Amplifier GENERAL DESCRIPTION The is a.-w, fully integrated, audio power amplifier. It is designed to maximize audio performance in portable applications such as mobile phone. The portable
SGM mW Differential Input, Stereo Audio Power Amplifier
SGM482 2mW Differential Input, GENERAL DESCRIPTION The SGM482 is a stereo audio power amplifier with differential inputs. Operating on a single 5V power supply, it delivers 2mW of continuous RMS power
1.2W Audio Power Amplifier with Active-low Standby Mode
1.2W Audio Power Amplifier with Active-low Standby Mode General Description The SN4991 has been designed for demanding audio applications such as mobile phones and permits the reduction of the number of
2.6 Watt Mono Filter-Free Class-D Audio Power Amplifier
Features 2.6 Watt Mono FilterFree ClassD Audio Power Amplifier Efficiency With an 8Ω Speaker: 88% at 400 mw 80% at 100 mw 3.8mA Quiescent Current 0.4μA Shutdown Current Optimized PWM Output Stage Eliminates
AP4890B --- 1W AUDIO POWER AMPLIFIER
AP4890B --- 1W AUDIO POWER AMPLIFIER 1. DESCRIPTION : The AP4890B is an audio power amplifier designed for portable communication device applications such as mobile phone applications. The AP4890B is capable
P O at 1% THD+N, VDD = 5V. Features. Applications SHUTDOWN HP SENSE GND GND SN4188 GND GND GND IN B STEREO ENHANCED IN A2 CONTROL IN B2 HP LOGIC
Dual 2.7W Audio Amplifier Plus Stereo Headphone & Stereo Enhanced General Description The SN4188 is a dual bridge-connected audio power amplifier which, when connected to a 5V supply, will deliver 2.7W
LM W Audio Power Amplifier with DC Volume Control and Microphone Preamp
1.75W Audio Power Amplifier with DC Volume Control and Microphone Preamp General Description Key Specifications The is a monolithic integrated circuit that provides DC volume control, and a bridged audio
SGM W Fully Differential Audio Power Amplifier with Selectable Shutdown
GENERAL DESCRIPTION The SGM4996 is a fully differential audio power amplifier that is designed for portable communication device applications and demanding applications in mobile phones. It is capable
IS31AP W AUDIO POWER AMPLIFIER WITH ACTIVE-HIGH STANDBY MODE. August 2013
.W AUDIO POWER AMPLIFIER WITH ACTIVE-HIGH STANDBY MODE August 03 GENERAL DESCRIPTION The IS3AP4996 has been designed for demanding audio applications such as mobile phones and permits the reduction of
UNISONIC TECHNOLOGIES CO., LTD M4670 Preliminary CMOS IC
UNISONIC TECHNOLOGIES CO., LTD M4670 Preliminary CMOS IC FITERLESS HIGH EFFICIENCY 3W SWITCHING AUDIO AMPLIFIER DESCRIPTION The M4670 is a fully integrated single-supply, high-efficiency Class D switching
LM4752 Stereo 11W Audio Power Amplifier
LM4752 Stereo 11W Audio Power Amplifier General Description The LM4752 is a stereo audio amplifier capable of delivering 11W per channel of continuous average output power to a 4Ω load, or 7W per channel
SGM W Audio Power Amplifier
GENERAL DESCRIPTION The SGM489 is a.2w, fully integrated, audio power amplifier. It is designed to maximize audio performance in portable applications such as mobile phone. The portable application requires
LM W High-Efficiency Mono BTL Audio Power Amplifier
10W High-Efficiency Mono BTL Audio Power Amplifier General Description The LM4680 is a high efficiency switching audio power amplifier primarily designed for demanding applications in flat panel monitors
SGM W Audio Power Amplifier with Shutdown Mode
SGM487 GENERAL DESCRIPTION The SGM487 is a mono bridged audio power amplifier that is designed for portable communication device applications and demanding applications in mobile phones. SGM487YPS8 is
SN4018. Stereo 2.7W Audio Power Amplifier (with DC_Volume Control) General Description. Features. Applications. Typical Application Circuit
Stereo 2.7W Audio Power Amplifier (with DC_Volume Control) General Description SN4018 is a monolithic integrated circuit, which provides precise DC volume control, and a stereo bridged audio power amplifiers
APA2068 STEREO 2.6W AUDIO POWER AMPLIFIER (WITH DC VOLUME CONTROL) GENERAL DESCRIPTION TYPICAL APPLICATIONS PIN CONFIGURATION FEATURES
A SHUTDOWNE APA2068 STEREO 2.6W AUDIO POWER AMPLIFIER (WITH DC VOLUME CONTROL) GENERAL DESCRIPTION APA2068 is a monolithic integrated circuit, which provides precise DC volume control, and a stereo bridged
SGM W Fully Differential Audio Power Amplifier
.3W Fully Differential GENERAL DESCRIPTION The SGM4895 is a fully differential audio power amplifier that is designed for portable communication device applications and demanding applications in mobile
Low Noise 300mA LDO Regulator General Description. Features
Low Noise 300mA LDO Regulator General Description The id9301 is a 300mA with fixed output voltage options ranging from 1.5V, low dropout and low noise linear regulator with high ripple rejection ratio
EUA W Mono Filterless Class-D Audio Power Amplifier DESCRIPTION FEATURES APPLICATIONS. Typical Application Circuit
3-W Mono Filterless Class-D Audio Power Amplifier DESCRIPTION The EUA2011 is a high efficiency, 3W mono class-d audio power amplifier. A low noise, filterless PWM architecture eliminates the output filter,
LM4765 OvertureAudio Power Amplifier Series Dual 30W Audio Power Amplifier with Mute and Standby Modes
LM4765 Overture Audio Power Amplifier Series Dual 30W Audio Power Amplifier with Mute and Standby Modes General Description The LM4765 is a stereo audio amplifier capable of delivering typically 30W per
SGM4863 Dual 2.1W Audio Power Amplifier Plus Stereo Headphone Function
Dual.W Audio Power Amplifier GENERAL DESCRIPTION The SGM4863 is a dual bridge-connected audio power amplifier which, when connected to a 5V supply, will deliver.w into a 4Ω load or.5w into a 3Ω load with
EUA2011A. Low EMI, Ultra-Low Distortion, 2.5-W Mono Filterless Class-D Audio Power Amplifier DESCRIPTION FEATURES APPLICATIONS
Low EMI, Ultra-Low Distortion, 2.5-W Mono Filterless Class-D Audio Power Amplifier DESCRIPTION The EUA2011A is a high efficiency, 2.5W mono class-d audio power amplifier. A new developed filterless PWM
SN W Mono Filterless Class-D Audio Power Amplifier DESCRIPTION FEATURES APPLICATIONS. Typical Application Circuit
2.6W Mono Filterless Class-D Audio Power Amplifier DESCRIPTION The SN200 is a 2.6W high efficiency filter-free class-d audio power amplifier in a.5 mm.5 mm wafer chip scale package (WCSP) that requires
UNISONIC TECHNOLOGIES CO., LTD
UNISONIC TECHNOLOGIES CO., LTD DUAL 2.2W AUDIO AMPLIFIER PLUS STEREO HEADPHONE FUNCTION DESCRIPTION The UTC L4863 is a dual bridge-connected audio power amplifier. It combines dual bridge speaker amplifiers
SGM W Mono Fully Differential Audio Power Amplifier
.3W Mono Fully Differential GENERAL DESCRIPTION The SGM4995 is a fully differential audio power amplifier that is designed for portable communication device applications and demanding applications in mobile
LM4863 Dual 2.2W Audio Amplifier Plus Stereo Headphone Function
Dual 2.2W Audio Amplifier Plus Stereo Headphone Function General Description The LM4863 is a dual bridge-connected audio power amplifier which, when connected to a 5V supply, will deliver 2.2W toa4ω load
Dual 20W Audio Power Amplifier with Mute and Standby Modes
LM1876 Overture Audio Power Amplifier Series Dual 20W Audio Power Amplifier with Mute and Standby Modes General Description The LM1876 is a stereo audio amplifier capable of delivering typically 20W per
Mono Filter-less Class-D Audio Power Amplifier
SN00B 3W@5.0V Mono Filter-less Class-D Audio Power Amplifier General Description The SN00B is a high efficiency, 3W@5.0V mono filter-less Class-D audio power amplifier. A low noise, filter-less PWM architecture
Distributed by: www.jameco.com 1-800-831-4242 The content and copyrights of the attached material are the property of its owner. LM4765 Overture Audio Power Amplifier Series Dual 30W Audio Power Amplifier
EUA W Mono Filterless Class-D Audio Power Amplifier
.5-W Mono Filterless Class-D Audio Power Amplifier DESCRIPTION The EUA2005 is a high efficiency,.5w mono class-d audio power amplifier. A low noise, filterless PWM architecture eliminates the output filter,
IS31AP W AUDIO POWER AMPLIFIER WITH ACTIVE-LOW STANDBY MODE. October 2012
.W AUDIO POWER AMPLIFIER WITH ACTIVE-LOW STANDBY MODE October 0 GENERAL DESCRIPTION The IS3AP499 has been designed for demanding audio applications such as mobile phones and permits the reduction of the
参考資料 PAM8012. Pin Assignments. Description. Features. Applications. A Product Line of. Diodes Incorporated
MONO 2.0W ANTI-SATURATION CLASS-D AUDIO POWER AMPLIFIER with POWER LIMIT Description Pin Assignments The is a 2.0W mono filterless class-d amplifier with high PSRR and differential input that reduce noise.
2.95W Mono Filter-less Class-D Audio Power Amplifier
.95W Mono Filter-less Class-D Audio Power Amplifier General Description The SN005 is a high efficiency,.95w mono Class-D audio power amplifier. A low noise, filter-less PWM architecture eliminates the
THE PHYSICAL MAP GENERAL DESCRIPTION APPLICATIONS BLOCK DIAGRAM FEATURES SHENZHEN XPTEK TECHNOLOGY CO., LTD
GENERAL DESCRIPTION SHENZHEN XPTEK TECHNOLOGY CO., LTD The is an audio power amplifier primarily designed for demanding applications in low-power portable systems. It is capable of delivering 5 watts of
BA Features. General Description. Applications. Marking Information. 3W Mono Filterless Class D Audio Power Amplifier
3W Mono Filterless Class D Audio Power Amplifier General Description The BA16853 is a cost-effective mono Class D audio power amplifier that assembles in Dual Flat No-Lead Plastic Package (DFN-8). Only
LY W Mono Filterless Class D Audio power Amplifier
FEATURES 3.3 W Into 4Ω from 5.5V power supply at THD+N = % (Typ.). 2. W Into 8Ω from 5.5V power supply at THD+N = % (Typ.). 2.5V~5.5V Power supply. Low shutdown current. Low quiescent current. Minimum
Distributed by: www.jameco.com 1-800-831-4242 The content and copyrights of the attached material are the property of its owner. Stereo 11W Audio Power Amplifier General Description The is a stereo audio
LM4755 Stereo 11W Audio Power Amplifier with Mute
LM4755 Stereo 11W Audio Power Amplifier with Mute General Description The LM4755 is a stereo audio amplifier capable of delivering 11W per channel of continuous average output power to a 4Ω load or 7W
LM4766 Typical Application
LM4766 Overture Audio Power Amplifier Series Dual 40W Audio Power Amplifier with Mute General Description Key Specifications The LM4766 is a stereo audio amplifier capable of delivering typically 40W per
Dual 2.2W Audio Power Amplifier Plus Stereo
HWD4863 Dual 2.2W Audio Power Amplifier Plus Stereo Headphone Function General Description --- HWD4863 is a dual bridge-connected audio power amplifier which, when connected to a 5V supply, will deliver
UNISONIC TECHNOLOGIES CO., LTD PA4838
UNISONIC TECHNOLOGIES CO., LTD PA4838 STEREO W AUDIO POWER AMPLIFIERS WITH DC VOLUME CONTROL AND LECTABLE GAIN DESCRIPTION The UTC PA4838 is a monolithic integrated circuit and designed to provide DC volume
LM4889 LM Watt Audio Power Amplifier
LM4889 1 Watt Audio Power Amplifier Literature Number: SNAS157G 1 Watt Audio Power Amplifier General Description The LM4889 is an audio power amplifier primarily designed for demanding applications in
Obsolete Product(s) - Obsolete Product(s)
TS486 TS487 mw STEREO HEADPHONE AMPLIFIER WITH STANDBY MODE OPERATING FROM to 5.5V STANDBY MODE ACTIVE LOW (TS486) or HIGH (TS487) OUTPUT POWER: 2mW @5V, 38mW @3.3V into 6Ω with.% THD+N max (khz) LOW CURRENT
Mono 1.5 W/Stereo 250 mw Power Amplifier SSM2250
a FEATURES Part of SoundMax Audio Solution for Desktop Computers Mono.5 W Differential or Stereo 50 mw Output Single-Supply Operation:.7 V to 6 V Low Shutdown Current = 60 A PC 99 Compliant Low Distortion:
Mono 1.9W / Stereo 300mW Power Amplifier Low Voltage Operation, Shutdown Function
Low Voltage Operation, Shutdown Function FEATURES Operation range:.4v ~ 6.5V Shutdown Current 8uA at 5V Output power, THDN=% BTL, R L =3Ω,.W at 5V BTL, R L =4Ω,.9W at 5V, 0.83W at 3.3V, 500mW at.7v BTL,
UNISONIC TECHNOLOGIES CO., LTD PA3332 Preliminary CMOS IC
UNISONIC TECHNOLOGIES CO., LTD 2.6W STEREO AUDIO AMPLIFIER DESCRIPTION The UTC PA3332 is a stereo audio power amplifier. When the device is idle, it enters SHDN mode for some low current consumption applications.
LM Overture Audio Power Amplifier Series Dual 20-Watt Audio Power Amplifier with Mute and Standby Modes
LM876 - Overture Audio Power Amplifier Series Dual 20-Watt Audio Power Amplifier with Mute and Standby Modes Features Typical Application Connection Diagram SPiKe protection Minimal amount of external
SGM8908 Capless 3Vrms Line Driver with Adjustable Gain
GENERAL DESCRIPTION The is a 3Vrms pop/click-free stereo line driver designed to allow the removal of the output DC-blocking capacitors for reduced component count and cost. The device is ideal for single
LM4941. LM Watt Fully Differential Audio Power Amplifier With RF. Suppressionand Shutdown. Literature Number: SNAS347B
1.25 Watt Fully Differential Audio Power Amplifier With RF Suppressionand Shutdown Literature Number: SNAS347B March 2007 1.25 Watt Fully Differential Audio Power Amplifier With RF Suppression and Shutdown
ESMT Preliminary EMP8731
High-PSRR, Low-Noise, 300mA CMOS Linear Regulator with 3 Types of Output Select General Description The EMP8731 features ultra-high power supply rejection ratio, low output voltage noise, low dropout voltage,
EUA W/CH Stereo Filter-less Class-D Audio Power Amplifier with Auto-Recovery
3-W/CH Stereo Filter-less Class-D Audio Power Amplifier with Auto-Recovery DESCRIPTION The is a high efficiency, 3W/channel stereo class-d audio power amplifier. A low noise, filterless PWM architecture
LM4731 Stereo 25W Audio Power Amplifier with Mute and Standby Modes
LM4731 Stereo 25W Audio Power Amplifier with Mute and Standby Modes General Description Key Specifications The LM4731 is a stereo audio amplifier capable of delivering typically 25W per channel of continuous
A2327. AiT Semiconductor Inc. ORDERING INFORMATION APPLICATION
DESCRIPTION The is a 2.6W high efficiency filter-free class-d audio power amplifier that requires only three external components. Features like 88% efficiency, 75dB PSRR, and improved RF-rectification
Ultra High-PSRR, Low-Noise, 300mA CMOS Linear Regulator. Applications. g g g g g g. Features
Ultra High-PSRR, Low-Noise, 300mA CMOS Linear Regulator General Description Applications The features ultra-high power supply rejection ratio, low output voltage noise, low dropout voltage, low quiescent
LM4863 Dual 2.2W Audio Amplifier Plus Stereo Headphone Function
Dual 2.2W Audio Amplifier Plus Stereo Headphone Function General Description The LM4863 is a dual bridge-connected audio power amplifier which, when connected to a 5V supply, will deliver 2.2W toa4ωload
id9309 Ultra-Low Noise Ultra-Fast 300mA LDO Regulator Features
Ultra-Low Noise Ultra-Fast 300mA LDO Regulator General Description The id9309 is a 300mA, low dropout and low noise linear regulator with high ripple rejection ratio and fast turn-on time. It has fixed
MP2009 Ultra-Low-Noise Low-Dropout, 120mA Linear Regulator
MP2009 Ultra-Low-Noise Low-Dropout, 120mA Linear Regulator DESCRIPTION The MP2009 is an ultra low noise, low dropout linear regulator. The output voltage of MP2009 ranges from 1.5V to 4.5V in 100mV increments
TPA6110A2 150-mW STEREO AUDIO POWER AMPLIFIER
TPA6A2 5-mW STEREO AUDIO POWER AMPLIFIER SLOS34 DECEMBER 2 5 mw Stereo Output PC Power Supply Compatible Fully Specified for 3.3 V and 5 V Operation Operation to 2.5 V Pop Reduction Circuitry Internal
LM4860 Boomer Audio Power Amplifier Series 1W Audio Power Amplifier with Shutdown Mode
LM4860 Boomer Audio Power Amplifier Series 1W Audio Power Amplifier with Shutdown Mode General Description The LM4860 is a bridge-connected audio power amplifier capable of delivering 1W of continuous
SGM MHz, 48μA, Rail-to-Rail I/O CMOS Operational Amplifier
PRODUCT DESCRIPTION The is a low cost, single rail-to-rail input and output voltage feedback amplifier. It has a wide input common mode voltage range and output voltage swing, and takes the minimum operating