SGM W Fully Differential Audio Power Amplifier with Selectable Shutdown

Transcription

1 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 of delivering.3w of continuous average power into an 8Ω load with typically % distortion (THD+N) from a 5V battery voltage. It operates from 2.5V to 5.5V power supply. The SGM4996 features a low power consumption shutdown mode. To be flexible, shutdown may be enabled by either a logic high or low depending on the voltage applied on the SD MODE pin. Additionally, the SGM4996 features an internal thermal shutdown protection mechanism. The SGM4996 contains advanced pop/click circuitry, with a minimal amount of external components. All these features make SGM4996 ideal for wireless handsets and other low voltage applications where minimal power consumption is a primary requirement. The SGM4996 is available in Green MSOP-, TDFN-3 3-L and MSOP-8 packages. It operates over an ambient temperature range of -4 to +85. FEATURES Fully Differential Amplifier Excellent PSRR: Direct Connection to Battery.3W into 8Ω Load from 5V Supply at THD+N = % (TYP) 2.5V to 5.5V Operation Low Shutdown Current Improved Pop/Click Circuitry Support Single-Ended or Differential Input Thermal Overload Protection Circuitry No Output Coupling Capacitors, Bootstrap Capacitors Required External Gain Configuration Capability -4 to +85 Operating Temperature Range Green MSOP-, TDFN-3 3-L and MSOP-8 Packages APPLICATIONS Portable Systems Wireless Handsets Mobile Phone Handheld Computers PDAs GPS REV. A. 2

2 PACKAGE/ORDERING INFORMATION MODEL ORDER NUMBER PACKAGE DESCRIPTION PACKAGE OPTION MARKING INFORMATION SGM4996YMSG/TR MSOP- Tape and Reel, 3 SGM4996YMS SGM4996 SGM4996YDG/TR TDFN-3 3-L Tape and Reel, 3 SGM4996D SGM4996YMS8G/TR MSOP-8 Tape and Reel, 3 SGM4996YMS8 ABSOLUTE MAXIMUM RATINGS Supply Voltage...6V Input Voltage...-.3V to (V CC ) +.3V Storage Temperature Range to +5 Junction Temperature...5 Operating Temperature Range...-4 to +85 Lead Temperature Range (Soldering sec)...26 ESD Susceptibility HBM...4V MM...4V NOTE: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. CAUTION This integrated circuit can be damaged by ESD if you don t pay attention to ESD protection. SGMICRO recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. SGMICRO reserves the right to make any change in circuit design, specification or other related things if necessary without notice at any time. Please contact SGMICRO sales office to get the latest datasheet. 2

3 PIN CONFIGURATIONS (TOP VIEW) SGM4996YDG SD SELECT VO+ IN- 2 9 V CC SD MODE IN+ 3 4 GND 8 7 NC GND BYPASS 5 6 VO- TDFN-3 3-L SGM4996YMSG SGM4996YMS8G SD SELECT VO+ SHDN 8 VO- IN- SD MODE IN V CC NC GND BYPASS IN GND V CC BYPASS 5 6 VO- IN- 4 5 VO+ MSOP- MSOP-8 3

4 ELECTRICAL CHARACTERISTICS (The following AC specifications apply for 8Ω load, A V = V/V, T A = +25, unless otherwise specified.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage V CC V Shutdown Current I SD SDM = SDS = GND or SDM = SDS = V CC V CC = 5.V. 2 V CC = 3.6V. V CC = 2.6V. Output Offset Voltage V OS V IN = V, I O = A - 2 mv V CC = 5.V, No Load V CC = 5.V, 8Ω Load μa Quiescent Power Supply Current I Q V IN = V V CC = 3.6V, No Load V CC = 3.6V, 8Ω Load 3.87 V CC = 2.6V, No Load 3.2 V CC = 2.6V, 8Ω Load 3.2 ma SD SELECT Threshold High V SDSIH.2 SD SELECT Threshold Low V SDSIL.4 SD MODE Threshold High V SDMIH.2 SD MODE Threshold Low V SDMIL.4 V V CC = 5.V.3 f = khz, THD+N = % V CC = 3.6V.66 V CC = 3.V.46 Output Power (8Ω) P O V CC = 2.6V.33 V CC = 5.V.6 W f = khz, THD+N = % V CC = 3.6V.82 V CC = 3.V.57 V CC = 2.6V.4 Total Harmonic Distortion + Noise THD+N P O =.6Wrms, f = khz, V CC = 5.V.3 % V CC = 5.V -85 V RIPPLE = 2mV P-P C B = µf, f = 27Hz V CC = 3.6V -8 V CC = 3.V -64 () (2) Power Supply Rejection Ratio PSRR V CC = 2.6V -54 V CC = 5.V -83 db V RIPPLE = 2mV P-P C B = µf, f = khz V CC = 3.6V -8 V CC = 3.V -64 V CC = 2.6V -54 Common Mode Rejection Ratio (2) CMRR f = 27Hz, V CM = 2mV P-P, V CC = 5.V -8 db V CC = 5.V 68 Wake-Up Time T WU C B = μf V CC = 3.6V 53 V CC = 3.V 45 V CC = 2.6V 4 ms NOTES:. Ω terminated input. 2. PSRR and CMRR are affected by the matching between gain-setting resistor ratios. 4

5 TYPICAL PERFORMANCE CHARACTERISTICS At T A = +25, A V =, f = khz, C B = µf, unless otherwise noted. THD+N vs. Output Power THD+N vs. Output Power V CC = 5V BW < 8kHz V CC = 3.6V BW < 8kHz THD+N (%). THD+N (%) Output Power (W)... Output Power (W) THD+N (%).. V CC = 2.6V BW < 8kHz THD+N vs. Output Power... Output Power (W) Power Dissipation (W) Power Dissipation vs. Output Power V CC = 5V BW < 8kHz Output Power (W) Power Dissipation vs. Output Power Power Dissipation vs. Output Power.4.2 Power Dissipation (W).3.2. V CC = 3.6V BW < 8kHz Power Dissipation (W).5..5 V CC = 2.6V BW < 8kHz Output Power (W) Output Power (W) 5

6 TYPICAL PERFORMANCE CHARACTERISTICS At T A = +25, A V =, f = khz, C B = µf, unless otherwise noted. THD+N (%).. THD+N vs. Frequency V CC = 5V P O = 6mW No filters... Frequency (khz) PSRR (db) Power Supply Rejection Ratio vs. Frequency V CC = 5V, Input Ω Terminated 2mV P-P -.. Frequency (khz) -2 Power Supply Rejection Ratio vs. Frequency V CC = 3.6V, Input Ω Terminated 2mV P-P -2 Power Supply Rejection Ratio vs. Frequency V CC = 2.6V, Input Ω Terminated 2mV P-P PSRR (db) -4-6 PSRR (db) Frequency (khz) -.. Frequency (khz) CMRR (db) Common Mode Rejection Ratio vs. Frequency V CC = 5V, Input Ω Terminated 2mV P-P Output Power (W) Output Power vs. Supply Voltage THD+N = % THD+N = % -.. Frequency (khz) Supply Voltage (V) 6

7 TYPICAL PERFORMANCE CHARACTERISTICS At T A = +25, A V =, f = khz, C B = µf, unless otherwise noted. Dropout Voltage (V) Clipping (Dropout) Voltage vs. Supply Voltage Top Bottom Supply Voltage (V) 7

8 APPLICATION CIRCUITS R F 2kΩ To Battery C S μf V CC Shutdown Control SD MODE SD SELECT Differential Audio Input Status Shutdown On On Shutdown C I.39μF C I.39μF SD SELECT SD MODE R I 2kΩ C Bypass B μf (Optional) R I 2kΩ kω To External Power kω Supply or Control I/O VO- IN- Bias Circuitry IN+ VCC /2 _ + Shutdown Control GND + _ VO+ R F 2kΩ NOTE: A kω resistor must be serially connected to SD SELECT or SD MODE pin. Figure. Typical Differential Input Application Schematic 8

9 APPLICATION CIRCUITS R F 2kΩ To Battery C S μf V CC Audio Input C I.39μF C I.39μF R I 2kΩ C Bypass B μf (Optional) R I 2kΩ VO- IN- Bias Circuitry IN+ VCC /2 _ + + _ VO+ Shutdown Control SD MODE SD SELECT Status Shutdown On On Shutdown SD SELECT SD MODE To External Power Supply or Control I/O kω kω Shutdown Control GND R F 2kΩ NOTE: A kω resistor must be serially connected to SD SELECT or SD MODE pin. Figure 2. Single-Ended Input Application Schematic 9

10 APPLICATION CIRCUITS R F 2kΩ To Battery C S μf V CC Differential Audio Input C I.39μF C I.39μF R I 2kΩ C Bypass B μf (Optional) R I 2kΩ VO- IN- Bias Circuitry IN+ VCC /2 _ + + _ VO+ To External Power SHDN Supply or Control I/O kω Shutdown Control GND R F 2kΩ NOTE: A kω resistor must be serially connected to SHDN pin. Figure 3. Typical Differential Input Application Schematic for SGM4996YMS8G

11 APPLICATION CIRCUITS R F 2kΩ To Battery C S μf V CC Audio Input C I.39μF C I.39μF R I 2kΩ C Bypass B μf (Optional) R I 2kΩ VO- IN- Bias Circuitry IN+ VCC /2 _ + + _ VO+ To External Power Supply or Control I/O SHDN kω Shutdown Control GND R F 2kΩ NOTE: A kω resistor must be serially connected to SHDN pin. Figure 4. Single-Ended Input Application Schematic for SGM4996YMS8G

12 PACKAGE OUTLINE DIMENSIONS MSOP- b E E 4.8 e RECOMMENDED LAND PATTERN (Unit: mm) D L A A A2 c θ Symbol Dimensions In Millimeters Dimensions In Inches MIN MAX MIN MAX A A A b c D E E e.5 BSC.2 BSC L θ 6 6 2

13 PACKAGE OUTLINE DIMENSIONS TDFN-3 3-L D e N k D E E L N5 b N TOP VIEW BOTTOM VIEW A SIDE VIEW A A RECOMMENDED LAND PATTERN (Unit: mm) Dimensions In Millimeters Dimensions In Inches Symbol MIN MAX MIN MAX A A A2.23 REF.8 REF D D E E k.2 MIN.8 MIN b e.5 TYP.2 TYP L

14 PACKAGE OUTLINE DIMENSIONS MSOP-8 b E E 4.8 e RECOMMENDED LAND PATTERN (Unit: mm) D L A A A2 c θ Symbol Dimensions In Millimeters Dimensions In Inches MIN MAX MIN MAX A A A b c D E E e.65 BSC.26 BSC L θ 6 6 4

15 TAPE AND REEL INFORMATION REEL DIMENSIONS TAPE DIMENSIONS P2 P W Q Q2 Q Q2 Q Q2 B Q3 Q4 Q3 Q4 Q3 Q4 Reel Diameter P A K Reel Width (W) DIRECTION OF FEED NOTE: The picture is only for reference. Please make the object as the standard. KEY PARAMETER LIST OF TAPE AND REEL Package Type Reel Diameter Reel Width W A B K P P P2 W Pin Quadrant MSOP Q TDFN-3 3-L Q MSOP Q 5

16 CARTON BOX DIMENSIONS NOTE: The picture is only for reference. Please make the object as the standard. KEY PARAMETER LIST OF CARTON BOX Reel Type Length Width Height Pizza/Carton