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| UTC TA7738P LINEAR INTEGRATED CIRCUIT 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 Pre GND Pre Input Pre NF Pre Output Filter 2 Filter 1 Vcc Boot Strap 16 15 14 13 12 Filter 11 10 9 Pre AMP Buffer AMP Power AMP ALC 1 ALC Input 2 3 4 GND 5 6 7 8 Power Output Buffer Buffer NF Output Power Power Power NF Input GND ABSOLUTE MAXIMUN RATING(Ta=25C) PARAMETER SYMBOL Supply Voltage Output Current Power Dissipation* Operating Temperature VCC I O(peak) PD TOPR VALUE 14 1.5 1200 -25~75 -55~150 UNIT V A mW C C Storage Temperature TSTG *Note: De-rated above Ta=25C in proportion of 9.6mW/C UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R110-009,A UTC TA7738P Total Quiescent Current Pre-amplifier Open Loop Voltage Gain Closed Loop Voltage Gain Maximum Output Voltage Input Impedance Equivalent Input Noise Voltage Pre-amplifier + Buffer amplifier Closed Loop Voltage Gain Maximum Output Voltage Equivalent Input Noise Voltage ALC Effect ALC Range Power amplifier Open Loop Voltage Gain Closed Loop Voltage Gain Maximum Output Power Output Noise Voltage LINEAR INTEGRATED CIRCUIT UNIT mA 35 70 40 THD<1% VOUT=0.5Vrms Rg=0 0.7 30 1.4 2.5 dB dB Vrms k Vrms ELECTRONIC CHARACTERISTICS(Ta=25C, VCC=6V, f=1kHZ, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX ICCQ1 ICCQ2 GVO1 GV1 VOUT1 RIN1 VNI VCC=3.5V VCC=6V 7.5 11 55 GV2 VOUT2 VNO2 ALC1 ALC2 GVO1 GV1 POM VNO3 Pre-AMP GV=40dB Buff-AMP GV=20dB THD=3% Rg=0, GV2=60dB VIN= -60dBm~ -20dBm THD<1% 60 RL=4,THD=10% VCC=9V,RL,THD=10% Rg=0, GV=40dB 0.8 1.5 60 1.7 1.2 2 60 70 40 0.96 2 0.3 1 2.5 dB Vrms mVrms dB dB dB dB W mVrms UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R110-009,A UTC TA7738P TEST CIRCUIT LINEAR INTEGRATED CIRCUIT SW1-3 0.01 F Inter Lock 10k 1,2=off, 3=on 220 22 F 22k 4.7 F 3.3k 560pF SW3 Pre Output 220 F 330 F 100 F Vcc 1 SW1 2 3 16 15 14 13 12 Filter 11 10 9 Rg 600 SW5 SW6 Buffer AMP Power AMP SG ALC 1 390k 1k 2 3 #560pF 4 5 6 #6.2k SW4 7 8 #560pF 47 F 1000F/ 10V 0.068 F Pre AMP 220 1N60 47 F 47 F Power Output Buffer Output 4.7 F RL 5.6k 1N60 2 3 1 SW2 10 F 1k 51k 1000pF # 1uF 0.02 F use in measuring the output noise voltage SWITCH MODE TEST ITEM SW1 GVO1 GV1 VOUT1 GV2 VOUT2 VNO2 ALC GVO3 GV3 PO VNO3 1 1 1 1 1 1 1 2 2 2 2 SW2 1 1 1 3 3 3 2 1 1 1 1 SW3 ON OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF SW4 OFF OFF OFF OFF OFF OFF OFF ON OFF OFF OFF SW5 OFF OFF OFF OFF OFF ON OFF OFF OFF OFF OFF SW6 OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF ON UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R110-009,A UTC TA7738P LINEAR INTEGRATED CIRCUIT THD vs Output Power 2 1 d(%) Vcc=6V RL=8 TYPICAL PERFORMANCE CHARACTERISTICS THD vs Output Power 1 10 d(%) Vcc=6V RL=40 1 0.1 0 0.2 0.4 0.6 0.8 1 PO(W) 1.2 0 0.2 0.4 0.6 0.8 1.0 1.2 P0(W) THD vs Output Frequency 10 d(%) 8 Po(W) Double Channel Mode Output Power vs Supply Voltage 6 Vcc=9V RL=9 Po=1.5W 1 4 f=1kHz, d=10% RL=4 2 0.1 10 0 100 1k 10k f(Hz) 100k 0 4 8 12 Vcc(V) UTC UNISONIC TECHNOLOGIES CO., LTD. 4 QW-R110-009,A |
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