PA4867 UMC | Alldatasheet
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UNISONIC TECHNOLOGIES CO., LTD PA4867 CMOS IC www.unisonic.com.tw 1 of 7 Copyright © 2007 Unisonic Technologies Co., Ltd QW-R502-125.A DUAL 2.1W AUDIO AMPLIFIER PLUS STEREO HEADPHONE FUNCTION DESCRIPTION The UTC PA4867 is a stereo audio power amplifier capable of delivering typically 2.1W to a 4 Ω load or 2.4W to a 3 Ω load each channel with less than 1.0% THD+N using a 5V power supply. UTC PA4867 has a new circuit topolopy which can eliminate headphone output coupling capacitors. And an internal input MUX allows two sets of stereo inputs to the amplifier. The UTC PA4867 has integrated depop circuitry that virtually eliminates transients that cause noise in the speakers during power up and when using the shutdown modes. FEATURES * Operating voltage range VDD=2V~5.5V * Output power: -2.4W(typ.)@5V into 3 Ω with 1% THD+N max (1kHz) -2.1W(typ.)@5V into 4 Ω with 1% THD+N max (1kHz) * Eliminates SE-mode output coupling capacitors * Shutdown mode available * click and pop reduction circuitry * Unity-gain stable * Thermal-shutdown Protection * Input MUX control * SE/BTL mode available *Pb-free plating product number: PA4867L ORDERING INFORMATION Order Number Normal Lead Free Plating Package Packing PA4867-N20-R PA4867L-N20-R HTSSOP-20 Tape Reel PA4867-N20-T PA4867L-N20-T HTSSOP-20 Tube PA4867-P20-R PA4867L-P20-R TSSOP-20 Tape Reel PA4867-P20-T PA4867L-P20-T TSSOP-20 Tube
UNISONIC TECHNOLOGIES CO., LTD 2 of 7 www.unisonic.com.tw Q W - R 5 0 2 - 1 2 5 . A PIN CONFIGURATION PIN DESCRIPTION PIN NO. PIN NAME I/O PIN DESCRIPTION
1 SHUTDOWN I Entire IC into the shutdown mode when this pin connected to the V DD
2, 7, 19 GND Ground 3 +OUTA O Channel A + output in BTL mode, high impedance in SE mode 4, 17 V DD Supply voltage 5 -OUTA O Channel A - output in BTL mode, + output in SE mode 6 -INA I Inverting input of channel A 8 +INA I Non-inverting input of channe l A, connected to BYPASS pin inside the IC 9 -INA 2 I Inverting input of channel A 2
10 MUX CTRL
11 -INB 2 I Inverting input of channel B 2
12 NC No Connection
13 +INB I Non-inverting input of channe l B, connected to BYPASS pin inside the IC
14 BYPASS Internal mid-supply bias reference bypassing
15 -INB I Inverting input of channel B 16 -OUTB O Channel B - output in BTL mode, + output in SE mode 18 +OUTB O Channel B + output in BTL mode, high impedance in SE mode
20 HP-IN I Output mode select, connected to the V DD for SE mode or GND for BTL mode
UNISONIC TECHNOLOGIES CO., LTD 3 of 7 www.unisonic.com.tw Q W - R 5 0 2 - 1 2 5 . A ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT Supply Voltage 6.0 V Input Voltage -0.3 ~ VDD+0.3 V Power Dissipation P D Internally Limited Junction Temperature T J 150 Ċ Operating Temperature T OPR -40 ~ +85 Ċ Storage Temperature T STG -65 ~ +150 Ċ 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. ELECTRICAL CHARACTERISTICS The following specifications apply for VDD= 5V unless otherwise specified. Limits apply for TA= 25 .Ċ PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT FOR ENTIRE IC Supply Voltage V DD 2 5.5 V VIN=0V, IOUT=0A, HP-IN=0V 7.5 15 mAQuiescent Power Supply Current I DD VIN=0V, IOUT=0A, HP-IN=4V 3.0 6 mA Shutdown Current I SD V DD applied to the SHUTDOWN pin 0.7 2 µA FOR BRIDGED-MODE OPERATION Output Offset Voltage V O(OFF) V IN=0V 5 50 mV RL = 3Ω 2.2 W RL = 4Ω 1.9 WTHD=1%, f=1kHz RL = 8Ω 1.0 1.1 W RL = 3Ω 3.0 W RL = 4Ω 2.6 WTHD+N=10%, f=1kHz RL = 8Ω 1.5 W Output Power P OUT THD+N=1%, f=1kHz, RL=32Ω 0.34 W RL =4Ω, POUT =2W 0.3 % Total Harmonic Distortion+Noise THD+N 20Hz f 20kHz, AVD=2 RL =8Ω, POUT =1W 0.3 % Power Supply Rejection Ratio PSRR VDD=5V, VRIPPLE=200mVRMS, RL=8Ω, CB=2.2µF 67 dB Channel Separation X TALK f=1kHz, C B=2.2µF 80 dB Signal To Noise Ratio SNR V DD=5V, POUT=1.1W, RL=8Ω 97 dB FOR SINGLE-ENDED OPERATION Output Offset Voltage V O(OFF) V IN=0V 5 50 mV THD = 0.5%, f = 1kHz, RL = 32Ω 75 85 mW THD+N = 1%, f = 1kHz, RL = 8Ω THD+N = 1%, f = 1kHz, RL = 16Ω THD+N = 1%, f = 1kHz, RL = 32Ω 180 165 mWOutput Power P OUT THD+N = 10%, f = 1kHz, RL = 16Ω THD+N = 10%, f = 1kHz, RL = 32Ω 208 114 mW Output Voltage Swing V OUT THD = 0.05%,R L = 5kΩ 1 V P-P Total Harmonic Distortion+Noise THD+N AV=-1, POUT=75mW 20Hz≤f≤20kHz, RL=32Ω 0.2 % Power Supply Rejection Ratio PSRR CB=1.0µF, VRIPPLE=200mVRMS f=1kHz 52 dB Channel Separation X TALK f=1kHz, C B=2.2µF 60 dB Signal To Noise Ratio SNR V DD=5V, POUT=340mW, RL=8Ω 95 dB
Figure 1. Typical Audio Amplifier Application Circuit
UNISONIC TECHNOLOGIES CO., LTD 5 of 7 www.unisonic.com.tw Q W - R 5 0 2 - 1 2 5 . A TYPICAL CHARACTERISTICS THD+N (%) THD+N(%) THD+N vs. Output Power THD+N (%) 10m 0.010 0.1 0.1 1 2 Output Power (W) VDD=5V, RL=8Ȥ Bridged Load AVD=2,BW<80kHz f=1kHz f=20Hz f=20kHz THD+N vs. Output Power THD+N (%) 10m 0.010 0.1 0.1 0.5 f=20kHz f=1kHz f=20Hz VDD=5V, RL=16Ȥ Single Ended AV= -1, BW<80kHz Output Power (W) 2 2.50 Output Power vs. Supply Voltage 5.5 1.75 1.5 1.25 0.75 0.5 f=1kHz RL=8Ω Bridged Load BW<80kHz 1% THD+N 10% THD+N 0.25 3 3.5 4.5 5 Supply Voltage (V) Output Power (W) 8 100 1.75 Output Power vs. Load Resistance 1.5 1.25 0.75 0.5 1% THD+N 10% THD+N 20 30 50 60 VDD=5V f=1kHz A VD=2 Bridged Load BW<80kHz 0.25 Load Resistance (Ω) Output Power (W)
UNISONIC TECHNOLOGIES CO., LTD 6 of 7 www.unisonic.com.tw Q W - R 5 0 2 - 1 2 5 . A TYPICAL CHARACTERISTICS(Cont.) Output Power (W) Power Dissipation (W) -40 00 2.5 Power Derating Curve 160 Temperature (¥) 1.5 0.5 40 120 Power Dissipation (W) 0 0.1 0.25 0.3 Power Dissipation vs. Output Power Output Power (W) Power Dissipation (W) 0.2 0.15 0.1 0.05 0.2 0.4 VDD=5V f=1kHz Single Ended THD+N1.0% BW<80kHz RL=16Ȥ RL=32Ȥ RL=8Ȥ Crosstalk (dBr) PSRR (dB)
UNISONIC TECHNOLOGIES CO., LTD 7 of 7 www.unisonic.com.tw Q W - R 5 0 2 - 1 2 5 . A TYPICAL CHARACTERISTICS(Cont.) Gain (dB) Phase ( ) Supply Current (mA) o 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.