UTC TA7668BP LINEAR INTEGRATED CIRCUIT DUAL PRE-AMPLIFIER FOR TAPE RECORDER DESCRIPTION The UTC TA7668BP is a dual pre-amplifier with ALC and muting designed for use recorder/playback amplifier of tape recorder. It is suitable for a stereo set and a radio cassette recorder. FEATURES *Build-in ALC detector circuit *Build-in muting circuit *Wide operating voltage range( 6V to 15V) DIP-16 BLOCK DIAGRAM Ch1 Pre-Out and Rec in Ch1 Rec Mute Mute Output Output Input 5 PreAMP Ch1 Pre IN 7 ALC 8 ALC DET 16 Vcc 2 Vs 10 Rec AMP 11 9 Pre GND 12 Ch2 Pre-Out and Rec In ABSOLUTE MAXIMUN RATING(Ta=25°C) PARAMETER SYMBOL Supply Voltage Power Dissipation Operating Temperature 13 14 1 Ch2 Rec Mute Output Output Rec GND VALUE UNIT VCC 16 V PD 750 mW TOPR Storage Temperature TSTG Note: De-rated above Ta=25°C in proportion of 6mW/°C. UTC 15 Rec AMP Pre AMP Ch2 Pre IN NF 3 6 Ch1 Pre IN NF Ch2 Pre IN 4 -25~75 °C -55~150 °C UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R110-008,A UTC TA7668BP LINEAR INTEGRATED CIRCUIT DC VOLTAGE(VCC=9V,Ta=25°C, no input signal) PIN NO. SYMBOL VALUE UNIT 1 V1 0 V 2 V2 8.2 V 3 V3 0 V 4 V4 3.3 V 5 V5 1.3 V 6 V6 1.3 V 7 V7 0 V 8 V8 0.9 V 9 V9 0 V 10 V10 0 V 11 V11 1.3 V 12 V12 1.3 V 13 V13 3.3 V 14 V14 0 V 15 V15 2.4 V 16 V16 9 V ELECTRICAL CHARACTERISTICS(Ta=25°C, Vcc=9V, f=1kHz, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS ICCQ VIN=0 Open Loop Voltage Gain GVO VIN=-80dBm 65 78 dB Maximum Output Voltage VOM(1) THD=1% 0.5 0.8 Vrms Total Harmonic Distortion Quiescent Circuit Current MIN TYP MAX UNIT 8.5 10.5 mA PRE AMPLIFIER THD(1) VO=0.2Vrms 0.15 0.5 % Output Noise Voltage VNO Rg=2.2KΩ, B.P.F., NAB, 0.26 0.6 mVrms Cross Talk C.T. Rg=2.2KΩ 47 60 Closed Loop Voltage Gain GV RL=10KΩ 12.7 14.7 Maximum Output Voltage VOM(2) THD=1% 2 2.5 Total Harmonic Distortion THD(2) VO=1.5Vrms 0.2 % ALC Range RALC VIN=-60dBm,RIN=2.2KΩ 45 dB VIN=-20dBm, 0.3 1 % 0.9 1.1 1.42 Vrms 45 55 30Hz~20kHz dB REC AMPLIFIER Total Harmonic Distortion THD(ALC) (ALC) ALC Voltage 16.7 dB Vrms RIN=2.2KΩ,RL=10KΩ VO(ALC) VIN=-20dBm, RIN=2.2KΩ,RL=10KΩ Muting Attenuation ALC Balance UTC ATT BALC VIN=-20dBm 0 dB 2 dB UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R110-008,A UTC TA7668BP LINEAR INTEGRATED CIRCUIT TEST METHOD SYMBOL S1 S2 S3 S4 * * ICCQ * * GVO OFF CH1 VOM(1) OFF CH1 GV THD(1) OFF CH1 GV VNO OFF OFF CT OFF GV OFF S5 S6 S7 S8 S9 S10 Measure Terminal * * * * OFF * Vcc CH1 * * * OFF OFF Pre-Out NAB CH1 * * * OFF OFF Pre-Out NAB CH1 * * * OFF OFF Pre-Out GV NAB CH2 * * OFF OFF Pre-Out CH1 GV FLAT CH1→CH2 * * * OFF OFF Pre-Out CH1 GV FLAT * CH1 CH2 OFF OFF Pre-Out→ GVO FLAT CH1 Rec-Out VOM(2) OFF CH1 GV FLAT CH2 * CH1 CH2 OFF OFF Rec-Out THD(2) OFF CH1 GV FLAT CH2 * CH1 CH2 OFF OFF Rec-Out RALC OFF CH1 GV FLAT CH2 * CH1 CH2 OFF ON Rec-Out THD(ALC) OFF CH1 GV FLAT CH2 * CH1 CH2 OFF ON Rec-Out VO(ALC) OFF CH1 GV FLAT CH2 * CH1 CH2 OFF ON Rec-Out ATT OFF CH1 GV FLAT CH1 * * OFF Mute-Out ON Rec-Out CH1 OFF→ ON BALC CH2 UTC CH1→CH2 GV FLAT * * CH1→CH2 * OFF UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R110-008,A UTC TA7668BP LINEAR INTEGRATED CIRCUIT TEST CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 4 QW-R110-008,A