PA4871 UTC | Alldatasheet

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UNISONIC TECHNOLOGIES CO., LTD PA4871 CMOS IC www.unisonic.com.tw 1 of 6 Copyright © 2009 Unisonic Technologies Co., Ltd QW-R502-232.E 1.1W AUDIO POWER AMPLIFIER WITH SHUTDOWN MODE „ DESCRIPTION As a mono bridged power amplifier which is operating on a single 5V supply, the UTC PA4871 is capable of deliv ering 1.1W of output power per channel into 8Ω loads with less than 0.5% THD+N. The UTC PA4871 is optimally suited for low-power portable applications because of the it do not require output coupling capacitors, bootstrap capacitors or snubber networks. By using external gain-setting resistors, the closed loop response of the unity-gain stable PA4871 can be configured. „ FEATURES * Output power at 0.5% THD+N Supply voltage:5V Delivering 1.1W into a 8Ω load * With shutdown mode * Stable unity-gain. * Halogen Free SOP-8 DFN-8(3x3) MSOP-8 „ ORDERING INFORMATION Ordering Number Package Packing PA4871G-30Q-8-R DFN-8 Tape Reel PA4871G-S08-R SOP-8 Tape Reel PA4871G-SM1-R MSOP-8 Tape Reel

UNISONIC TECHNOLOGIES CO., LTD 2 of 6 www.unisonic.com.tw Q W - R 5 0 2 - 2 3 2 . E „ PIN CONFIGURATION VOUT28 4-IN SHUTDOWN BYPASS +IN GND VDD VOUT1 D F N - 8 ( 3 × 3 ) S O P - 8 / M S O P - 8 „ PIN DESCRIPTION PIN NO PIN NAME DESCRIPTION 1 SHUTDOWN Shutdown control input pin. 2 BYPASS Connected to a bypass capacitor. 3 +IN + pin of input signal. 4 -IN - pin of input signal.

5 V OUT1 Output pin1

6 V DD Supply voltage

7 GND GND

8 V OUT2 Output pin2

UNISONIC TECHNOLOGIES CO., LTD 3 of 6 www.unisonic.com.tw Q W - R 5 0 2 - 2 3 2 . E „ BLOCK DIAGRAM

UNISONIC TECHNOLOGIES CO., LTD 4 of 6 www.unisonic.com.tw Q W - R 5 0 2 - 2 3 2 . E „ ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Supply Voltage V DD 6 V Input Voltage V IN -0.3~V DD+0.3 V Power Dissipation P D Internally Limited W Junction Temperature T J 150 ° С Operating Temperature T OPR -40~+85 ° С Storage Temperature T STG -65~+150 ° С 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. „ THERMAL DATA PARAMETER SYMBOL RATINGS UNIT DFN-8(3×3) 59 ° С/W Junction to Ambient SOP-8/MSOP-8 θJA 140 ° С/W DFN-8(3×3) (Note) 4.3 ° С/W Junction to Case SOP-8/MSOP-8 θJC 35 ° С/W Note: Surface mounted on 1 in 2 copper pad of FR4 board „ ELECTRICAL CHARACTERISTICS (Ta=25°С, VDD=5V, RL=8Ω, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT DC ELECTRICAL CHARACTERISTICS Supply Voltage V DD 2.0 5 5.5 V DC Differential Output Voltage V OUT(DIFF) VIN=0V 5 50 mV Mute Mode VIN=0V,IOUT=0A 6.5 10.0 mASupply Current Shutdown Mode IDD VPIN1=VDD 0.6 2 µA THD=0.5%, fIN=1kHz 1.0 1.10 W Output Power P OUT THD=10%, fIN=1kHz 1.5 W Total Harmonic Distortion+Noise THD+N POUT=1WRMS, 20Hz<fIN<20kHz, G=2V/V 0.25 % Power Supply Ripple Rejection PSRR V DD=4.9V to 5.1V 65 dB

UNISONIC TECHNOLOGIES CO., LTD 5 of 6 www.unisonic.com.tw Q W - R 5 0 2 - 2 3 2 . E „ TYPICAL APPLICATION CIRCUIT

UNISONIC TECHNOLOGIES CO., LTD 6 of 6 www.unisonic.com.tw Q W - R 5 0 2 - 2 3 2 . E „ TYPICAL CHARACTERISTICS Output Waveform (v) Time (µs) 1600400 800 1200 Output Waveform 2000 VDD=5V, RL=8Ω f=1KHz, THD=0.5% Vp-p=8.42 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.