TA7738P UTC | Alldatasheet

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Technical content

UTC TA7738P LINEAR INTEGRATED CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R110-009,A AMPLIFIER SYSTEM FOR CASSETTE TAPE RECORDER

DESCRIPTION

The UTC TA7738P is an amplifier system, designed for a stereo set and a radio cassette tape recorder.

FEATURES

*Recorder play balk for pre-amplifier *Buffer amplifier( recorder amplifier) *Power amplifier *Wide operating voltage range( 3.5V to 9V) DIP-16 BLOCK DIAGRAM 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 Pre AMP Filter Buffer AMP Power AMP ALC Buffer Output Buffer NF GND Power Input Power NF Power GND Power Output Pre OutputPre NFPre Input Pre GND Filter 2 Filter 1 Vcc Boot Strap ALC Input ABSOLUTE MAXIMUN RATING(Ta=25°C) PARAMETER SYMBOL VALUE UNIT Supply Voltage VCC 14 V Output Current I O(peak) 1.5 A Power Dissipation* PD 1200 mW Operating Temperature TOPR -25~75 °C Storage Temperature TSTG -55~150 °C *Note: De-rated above Ta=25°C in proportion of 9.6mW/°C

UTC TA7738P LINEAR INTEGRATED CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R110-009,A ELECTRONIC CHARACTERISTICS(Ta=25°C, VCC=6V, f=1kHZ, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Total Quiescent Current I CCQ1 VCC=3.5V 7.5 mA I CCQ2 VCC=6V 11 35 Pre-amplifier Open Loop Voltage Gain G VO1 55 70 dB Closed Loop Voltage Gain G V1 40 dB Maximum Output Voltage V OUT1 THD<1% 0.7 Vrms Input Impedance R IN1 VOUT=0.5Vrms 30 k Ω Equivalent Input Noise Voltage VNI Rg=0 1.4 2.5 µΩVrms Pre-amplifier + Buffer amplifier Closed Loop Voltage Gain G V2 Pre-AMP GV=40dB Buff-AMP GV=20dB 60 dB Maximum Output Voltage V OUT2 THD=3% 1.5 1.7 Vrms Equivalent Input Noise Voltage VNO2 Rg=0, GV2=60dB 1.2 2.5 mVrms ALC Effect A LC1 VIN= -60dBm~ -20dBm 2 dB ALC Range A LC2 THD<1% 60 dB Power amplifier Open Loop Voltage Gain G VO1 60 70 dB Closed Loop Voltage Gain G V1 40 dB Maximum Output Power P OM RL=4 Ω,THD=10% 0.8 0.96 W VCC=9V,RL Ω,THD=10% 2 Output Noise Voltage V NO3 Rg=0, GV=40dB 0.3 1 mVrms

UTC TA7738P LINEAR INTEGRATED CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R110-009,A TEST CIRCUIT 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 Pre AMP Filter Buffer AMP Power AMP ALC SG 390kΩ 47 µF 1N601N60 5.6kΩ 10 µF 0.02 µF 2 3 1uF 1kΩ 1kΩ #560pF 22kΩ 47 µF 4.7 µF 51kΩ 1000pF 220Ω #6.2kΩ #560pF 0.068 µF 1000 µF/ 10V RL SW4 Power Output Buffer Output 330 µF 100 µF 220 µF 560pF 22 µF 0.01 µF 47 µF 220Ω Pre Output SW310kΩ SW1-3 4.7 µF 3.3kΩ SW1 SW5 SW6600Ω Inter Lock 1,2=off, 3=on Rg # use in measuring the output noise voltage SW2 Vcc SWITCH MODE TEST ITEM SW1 SW2 SW3 SW4 SW5 SW6 GVO1 1 1 ON OFF OFF OFF GV1 1 1 OFF OFF OFF OFF VOUT1 1 1 OFF OFF OFF OFF GV2 1 3 OFF OFF OFF OFF VOUT2 1 3 OFF OFF OFF OFF VNO2 1 3 OFF OFF ON OFF ALC 1 2 OFF OFF OFF OFF GVO3 2 1 OFF ON OFF OFF GV3 2 1 OFF OFF OFF OFF PO 2 1 OFF OFF OFF OFF VNO3 2 1 OFF OFF OFF ON

UTC TA7738P LINEAR INTEGRATED CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 4 QW-R110-009,A TYPICAL PERFORMANCE CHARACTERISTICS 0 0.2 0.4 0.6 1 1.2 d(%) THD vs Output Power 1 P0(W) d(%) THD vs Output Power 2 Vcc=6V RL=40Ω Vcc=6V RL=8Ω 10 100 1k d(%) f(Hz) Vcc=9V RL=9Ω Po=1.5W 4 8 120 Po(W) Vcc(V) f=1kHz, d=10% RL=4Ω Double Channel Mode Output Power vs Supply Voltage 0.8 100k10k 0.1 0.1 THD vs Output Frequency PO(W)

UTC TA7738P LINEAR INTEGRATED CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 5 QW-R110-009,A 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.