UNISONIC TECHNOLOGIES CO., LTD PA3112 CMOS IC DUAL 150mW AUDIO POWER AMPLIFIER DESCRIPTION The UTC PA3112 is a dual audio power amplifier with differential inputs capable of delivering typically 150mW per channel of continuous average power to an 16Ω load with less than 0.1% THD+N using a 5V power supply. The unity-gain stable UTC PA3112 can be configured by external gain-setting resistors. The UTC PA3112 features an externally controlled, low-power consumption shutdown mode. The UTC PA3112 exhibit a low quiescent current of typically 1.5mA, allowing usage in portable applications. FEATURES * Operating voltage range VDD=2.5V~5.5V * Output power: -150mW @5V into 16Ω * Differential inputs * Shutdown mode available * Low current consumption:3mA max * click and pop reduction circuitry * Unity-gain stable * Thermal and over-current protection MSOP-10 Lead-free: PA3112L Halogen-free: PA3112G ORDERING INFORMATION Normal PA3112-SM2-R PA3112-SM2-T Ordering Number Lead Free PA3112L-SM2-R PA3112L-SM2-T www.unisonic.com.tw Copyright © 2008 Unisonic Technologies Co., Ltd Halogen Free PA3112G-SM2-R PA3112G-SM2-T Package Packing MSOP-10 MSOP-10 Tape Reel Tube 1 of 8 QW-R502-100,B PA3112 CMOS IC PIN CONFIGURATION PIN DESCRIPTION PIN NO PIN NAME I/O 4 BYPASS I 5 2 3 8 7 6 10 1 9 GND IN1IN1+ IN2IN2+ SHUTDOWN VDD VOUT1 VOUT2 I I I I I I I O O DESCRIPTION Connect to internal voltage divider. For best performance, a 0.1 μF ~ 1 μF low ESR capacitor used. Ground Channel 1 negative input. Channel 1 positive input. Channel 2 negative input. Channel 2 positive input. Low quiescent current mode enable. High active. Supply voltage. Channel 1 audio output. Channel 2 audio output. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 8 QW-R502-100,B PA3112 CMOS IC ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT Supply Voltage VDD 6 V Input Voltage VIN -0.3~VDD~+0.3 V Continuous Total Power Dissipation internally limited ℃ Operating Junction Temperature TJ -40 ~ +150 ℃ Storage Temperature TSTG -65 ~ +150 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 OPERATING CONDITIONS PARAMETER Supply Voltage High-level Input Voltage Low-level Input Voltage SYMBOL VDD VIH, (SHUTDOWN) VIL, (SHUTDOWN) MIN 2.5 0.6×VDD TYP MAX 5.5 UNIT V V V 0.25×VDD ELECTRICAL CHARACTERISTICS (TA = 25℃) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT 15 mV DC ELECTRICAL CHARACTERISTICS Output Offset Voltage Power Supply Rejection Ratio Supply Current Supply Current in SHUTDOWN Mode Input Impedance VO(OFF) PSRR IDD IDD(SD) ZIN AV = 2 V/V, VDD = 3.2 V ~ 3.4 V VDD = 4.9 V ~ 5.1 V SHUTDOWN = 0 V, VDD = 2.5 ~ 5.5 V 83 76 dB 1.5 3 mA SHUTDOWN = VDD 10 50 μA VDD = 2.5 ~ 5.5 V >1 MΩ 60 0.4% >20 96° 71 89 100 mW AC OPERATING CHARACTERISTICS (VDD = 3.3V, RL = 16Ω) Output Power (Each Channel) Total Harmonic Distortion + Noise Maximum Output Power BW Phase Margin Supply Ripple Rejection Ratio Channel/Channel Output Separation Signal-to-Noise Ratio Noise Output Voltage THD 0.1%, f = 1 kHz POUT THD+N POUT = 40 mW, 20 - 20 kHz BOM G = 10, THD < 5% Open loop RR f = 1 kHz f = 1 kHz SNR POUT = 50 mW, AV = 1 eN AV = 1 KHz dB dB dB 11 μV(rms) 150 0.6% >20 96° 61 90 100 11.7 mW AC OPERATING CHARACTERISTICS (VDD = 5V, RL = 16Ω) Output Power (each channel) Total Harmonic Distortion + Noise Maximum Output Power BW Phase Margin Supply Ripple Rejection Ratio Channel/Channel Output Separation Signal-to-Noise Ratio Noise Output Voltage POUT THD≤0.1%, f = 1 kHz THD+N POUT = 100 mW, 20 - 20 kHz BOM G = 10, THD < 5% Open loop RR f = 1 kHz f = 1 kHz SNR POUT = 100 mW, AV = 1 eN AV = 1 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw KHz dB dB dB μV(rms) 3 of 8 QW-R502-100,B PA3112 CMOS IC ELECTRICAL CHARACTERISTICS(Cont.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT AC OPERATING CHARACTERISTICS (VDD = 3.3V, RL = 32Ω) Output Power (Each Channel) Total Harmonic Distortion + Noise Maximum Output Power BW Phase Margin Supply Ripple Rejection Ratio Channel/Channel Output Separation Signal-to-Noise Ratio Noise Output Voltage POUT THD≤ 0.1%, f = 1 kHz THD+N POUT = 30 mW, 20 - 20 kHz BOM AV = 10, THD < 2% Open loop RR f = 1 kHz f = 1 kHz SNR POUT = 40 mW, AV = 1 eN AV = 1 40 0.4% >20 96° 71 95 100 11 mW KHz dB dB dB μV(rms) AC OPERATING CHARACTERISTICS (VDD = 5V, RL = 32Ω) Output Power (Each Channel) Total Harmonic Distortion + Noise Maximum Output Power BW Phase Margin Supply Ripple Rejection Ratio Channel/Channel Output Separation Signal-to-Noise Ratio Noise Output Voltage POUT THD≤ 0.1%, f = 1 kHz THD+N POUT = 60 mW, 20 - 20 kHz BOM AV = 10, THD < 2% Open loop RR f = 1 kHz f = 1 kHz SNR POUT = 90 mW, AV = 1 eN AV = 1 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 90 0.4% >20 97° 61 98 100 11.7 mW KHz dB dB dB μV(rms) 4 of 8 QW-R502-100,B PA3112 CMOS IC TYPICAL APPLICATION CIRCUIT UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 8 QW-R502-100,B PA3112 THD+N − Total Harmonic Distortion + Noise - % THD+N − Total Harmonic Distortion + Noise - % TYPICAL CHARACTERISTICS THD+N − Total Harmonic Distortion + Noise - % THD+N − Total Harmonic Distortion + Noise - % CMOS IC Figure 5. Supply Ripple Rejection Ratio Vs Frequency 0 VDD = 5 V, -10 0.1µF RL = 16 Ω, -20 0 .47µ AV=-1V/V -30 F -40 1µF -50 -60 -70 Bypass=2.5V -80 -90 -100 -110 -120 20 100 1K 10K 20K Frequency, f (Hz) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 100 Figure 6. Output Noise Voltage vs Frequency AV=-10V/V AV=-1V/V 10 1 20 VDD = 5 V, BW = 10 Hz ~ 22KHz RL = 16 Ω, 100 1K Frequency, f (Hz) 10K 20K 6 of 8 QW-R502-100,B PA3112 TYPICAL CHARACTERISTICS(Cont.) Figure 7. Crosstalk vs Frequency 10 1 0.1 0.01 /V 0V 1 = V/V AV =-5 V A /V -1V = AV 100 1K Frequency, f (Hz) 10K 20K VDD = 5 V, PO=150mW CB=1µF, RL = 8 Ω, AV=-1V/V IN2-~VOUT1 IN1-~VOUT2 100 1K Frequency, f (Hz) 10K 20K Supply Current, IDD (mA) THD + N (%) Shutdown Attenuation (dB) 0.001 20 Figure 8. Crosstalk vs Frequency 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 20 VDD = 5 V, PO = 150 mW, CB = 1 µF, RL = 8 Ω Output Power, PO (mW) CMOS IC UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 7 of 8 QW-R502-100,B PA3112 TYPICAL CHARACTERISTICS(Cont.) 120 Figure 13. Signal-to-Noise Ratio vs Voltage Gain Power Dissipation/Amplifier (mW) Signal-to-Noise Ratio, SNR (dB) CMOS IC VDD=5V 100 80 60 40 20 0 1 2 3 4 5 6 7 8 Voltage Gain, AV (V/V) 9 10 Figure 14. Power Disssipation/Amplifier vs Load Power 180 VDD=5V 160 140 120 100 16Ω 80 60 40 20 32Ω 64Ω 0 0 20 40 60 80100 120 140160180200 Load Power (mW) 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 www.unisonic.com.tw 8 of 8 QW-R502-100,B