UNISONIC TECHNOLOGIES CO., LTD MC34119

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1 UNISONIC TECHNOLOGIES CO., LTD MC34119 LOW POWER AUDIO AMPLIFIER DESCRIPTION The UTC MC34119 is a low power audio amplifier IC intended for the telephone applications, such as in speakerphones. It provides differential speaker outputs to maximize output swing at low supply voltages. Coupling capacitor to the speaker is not required. Open loop gain is db, and the closed loop gain is set with two external resistors. The Mute pin permits powering down and/or muting the input signal. FEATURES * Wide operating supply voltage: V CC =2V~16V * Low quiescent supply current (I CC =2.7mA, typ) * Medium power output over 25mW at V CC =6V, R L =32Ω, THD<1% * Load impedance range (Ω~1Ω) * Low total harmonic distortion (.5% typ) * Mute function (I CC =65μA, typ) * Minimum number of external parts required ORDERING INFORMATION Ordering Number Lead Free Halogen Free Package Packing MC34119L-D-T MC34119G-D-T DIP- Tube MC34119L-S-R MC34119G-S-R SOP- Tape Reel MC34119L-P-R MC34119G-P-R TSSOP- Tape Reel MC34119L-K-33-R MC34119G-K-33-R DFN33- Tape Reel MC34119G-D-T (1)Packing Type (2)Package Type (3)Green Package (1) T: Tube, R: Tape Reel (2) D: DIP-, S: SOP-, P: TSSOP- K-33: DFN33- (3) G: Halogen Free and Lead Free, L: Lead Free 1 of Copyright 217 Unisonic Technologies Co., Ltd QW-R17-3.K

2 MARKING DIP- SOP- TSSOP- DFN33- PIN CONFIGURATION PIN DESCRIPTION PIN NO. PIN NAME DESCRIPTION 1 Mute This pin can be used to power down the IC to converse power, or for muting, or both. When at a logic LOW (less than.v), the IC is enabled for normal operation. When at a logic HIGH (2V to V CC ), the IC is disabled. If Mute is open, that is equivalent to a logic LOW. 2 Ripple Rejection 3 Input(+) 4 Input(-) A capacitor at this pin increase power supply rejection, and affects turn-on time. This pin can be left open if the capacitor at pin 3 is sufficient. Analog Ground for the amplifiers. A 1μF capacitor at this pin (with a 5μF capacitor at pin 2) provides 52dB( typ) of power supply rejection. Turn-on time of the circuit is affected by the capacitor on this pin. This pin can be used as an alternative input. Amplifier input. The input capacitor and resistor set low frequency roll-off and input impedance. The feedback resistor is connected between this pin and output 1. 5 Output 1 Amplifier output 1. The DC level is about (V CC ~.7V)/2. 6 V CC DC supply voltage is applied to this pin (V CC =2~16V). 7 GND Ground pin. Output 2 Amplifier output 2. This signal is equal in amplitude, but 1 out of phase with that output 1, the DC level is about (Vcc~.7V)/2. UNISONIC TECHNOLOGIES CO., LTD 2 of QW-R17-3.K

3 BLOCK DIAGRAM IN - 4 Amp 1 5 OUT1 IN + 3 OUT2 V CC 6 Bias 1 MUTE 2 7 RR GND UNISONIC TECHNOLOGIES CO., LTD 3 of QW-R17-3.K

4 ABSOLUTE MAXIMUM RATINGS (T A =25 C, unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT Supply Voltage V CC -1 ~ +1 V Output Current I OUT ±25 ma Maximum Input, Ripple Rejection, Mute Pin Voltage V IN -1 ~ +1 V Applied Output Voltage (Output Pin When Disabled) V OUT -1 ~ +1 V Junction Temperature T J +125 C Operating Temperature T OPR -2 ~ +5 C Storage Temperature T STG -4 ~ +15 C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. RECOMMENDED OPERATION CONDITIONS (T A =25 C, unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT Supply Voltage V CC 2~16 V Load Impedance Z L ~1 Ω Peak Load Current I L(PEAK) ±2 ma Differential Gain (5KHz Bandwidth) G V ~46 db Voltage at Mute V I(MUTE) ~V CC V Ambient Temperature T A -2~+7 C ELECTRICAL CHARACTERISTICS (V CC =6V, T A =25 C, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT DC PARAMETER V CC =3V, Mute=.V ma Operating Current I CC V CC =16V, Mute=.V ma V CC =3V, Mute=2V 65 1 μa R L =16Ω, R1=75KΩ, V CC =3V V Output Voltage V OUT R L =16Ω, R1=75KΩ, V CC =6V 2.65 V R L =16Ω, R1=75KΩ, V CC =12V 5.65 V Output Offset Voltage V O(OFF) V CC =6V, R F =75KΩ,R L =32Ω -3 3 mv Output High Level V OH 2V<V CC <16V, I OUT =-75mA Vcc-1 V Output Low Level V OL 2V<V CC <16V, I OUT =75mA.16 V Input Bias Current I I(BIAS) -1-2 na Equivalent Resistance R EQ Pin KΩ Pin KΩ AC PARAMETER Open Loop Gain of Amp. 1 G V 1 db Open Loop Gain of Amp. 2 G V 2 f=1khz, R L =32Ω db V CC =3V, R L =16Ω, THD<1% 55 mw Output Power V CC =6V, R L =32Ω, THD<1% 25 mw Total Harmonic Distortion (f=1khz) P OUT THD V CC =12V, R L =1Ω, THD<1% 4 mw V CC =6V, R L =32Ω, P OUT =125mW.5 1 % V CC 3V, R L =Ω, P OUT =2mW.5 % V CC 12V, R L =32Ω, P OUT =2mW.6 % Gain Bandwidth Product GB W 1.5 MHz Power Supply Rejection (V CC =6V, V CC =3V) RR C1=, C2=.1μF 5 db C1=.1μF, C2=, f=1khz 12 db C1=1μF, C2=5μF, f=1khz 52 db Muting G V(MUTE) Mute=2V, 1KHz<f<2KHz 7 db UNISONIC TECHNOLOGIES CO., LTD 4 of QW-R17-3.K

5 TYPICAL CIRCUIT VCC MUTE VCC MUTE.1μF 1KΩ.1μF 75KΩ 1KΩ Audio Input.1μF 3 4 UTC MC SPEAKER Audio Input.1μF 3 4 UTC MC SPEAKER.5μF 2 7.5μF K.5μF 5.1K 5.μF 5.1K.5μF 5.1K 5.μF VCC 75KΩ VCC KΩ Audio Input.1μF 3KΩ 4 3 UTC MC SPEAKER 2KΩ MUTE 2 VEE -1.V~-.V 7 1KΩ 2KΩ UNISONIC TECHNOLOGIES CO., LTD 5 of QW-R17-3.K

6 TYPICAL CHARACTERISTICS Differential Gain Versus Frequency Distortion Versus Power (f = 1, 3.kHz, AVD = 12dB) Differential Gain (db) R f = 15kΩ, R i = 6.kΩ R f = 75kΩ, R i = 3.kΩ Input.1 Ri Rf - + #1 #2 VO1 VO2 VO Total Harmonic Distortion, THD (%) V CC = 3.V R L = 32Ω V CC = 3.V V CC = 6.V,32Ω V CC = 12V,16V,32Ω 1 1.k 1k Frequency, f (Hz) 2k Output Power, P OUT (mw) 12 1 V CC = 16V Device Dissipation, 16Ω Load V CC = 12V 12 1 V CC = 16V Device Dissipation, 32ΩLoad V CC = 12V Device Dissipation (mw) V CC = 3.V V CC = 6.V Device Dissipation (mw) V CC = 3.V V CC = 6.V Load Power (mw) Load Power (mw) Distortion Versus Power (f = 1.kHz, AVD = 34dB) Distortion Versus Power (f = 3.kHz, AVD = 34dB) THD, Total Harmonic Distortion (%) V CC = 3.V V CC = 3.V R L = 32Ω V CC =12V, 16V V CC = 6.V V CC = 6.V R L = 32Ω VCC = 6.V RL = 16Ω V CC = 12V,16V R L = 32Ω THD, Total Harmonic Distortion (%) V CC = 3.V V CC = 3.V V CC =6V,32Ω V CC =12V,16V,32Ω Output Power, POUT (mw) Output Power, P OUT (mw) UNISONIC TECHNOLOGIES CO., LTD 6 of QW-R17-3.K

7 TYPICAL CHARACTERISTICS(Cont.) Output Low Level, VOL (V) ICD (μa) Input mv/div VCC VOH(V) Output 1.V/DIV ICC, Power Supply Current (ma) Input 1.mV/DIV Output 2mV/DIV UNISONIC TECHNOLOGIES CO., LTD 7 of QW-R17-3.K

8 UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD of QW-R17-3.K

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