UTC TA7640AP LINEAR INTEGRATED CIRCUIT AM/FM IF PROCESSOR DESCRIPTION The UTC TA7640AP Is A Monolithic Integrated Circuit Designed For The Radios Cassette Tape Recorder. FEATURES *Low Operating Current *Low External Component *Internal AM/FM Switch *Wide Operating Voltage : Vcc=3.8V DIP-16 BLOCK DIAGRAM 16 15 0.047 µF 14 13 12 2 LOCAL OSC REGULATOR 3 4 IF AMP 0.015 µF 10 AM AMP 5 6 9 AM/FM SWITC H FREQUENCY DETECTOR DC AMP 1 FM IF AMP IF AMP MIXER AM IF AMP 11 100 µF 0.01 µF INPUT 4.7kΩ Vcc=5V DRIVER 7 8 AM UTC FM 0.047 µF 68kΩ 10 µF 22 µF UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R110-007,A UTC TA7640AP LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS(Ta=25°C) PARAMETER SYMBOL VALUE VCC 8 V ILAMP 10 mA Voltage Led Driving Current Power Dissipation UNIT PD 750 mW Operating Temperature TOPR -25 ~-+75 °C Storage Temperature TSTG -55~-+150 °C NOTE :Ta>25°C,6mw/°C DC ELECTRICAL CHARACTERISTICS(VCC=5V) PARAMETER SYMBOL TYP UNIT AM FM Pin 1 AM Mixer Input V1 1.5 0 V Pin 2 AM Mixer Bypass V2 1.5 0 V Pin 3 AM Local OSC V3 2.3 2.3 V Pin 4 Voltage Regulator V4 2.3 2.3 V Pin 5 AM IF Out V5 1 0.9 V Pin 6 Level Meter Out V6 1 0.9 Pin 7 Led Driver Output V7 Pin 8 GND V8 0 0 V Pin 9 Dectector V9 1.4 1.5 V Pin 10 Vcc V10 5 5 V Pin 11 FM Decter Out V11 5 5 V Pin 12 AM IF Bypass V12 1.5 1.5 V Pin 13 AM IF Input V13 1.5 1.5 V Pin 14 AM IFBypass V14 1.5 1.5 V Pin 15 FM IF Input V15 1.5 1.5 V Pin 16 AM Mixer Output V16 5 5 V V V AC ELECTRICAL CHARACTERISTICS(Ta=25°C,VCC=5V,FM;f=10.7MHz, ∆f=22.5KHz, FM=400Hz AM; f=1MHz, Mod=30%,FM=400Hz) PARAMETER Supply Current SYMBOL CHART ICC(1) 1 ICC(2) TEST CONDITIONS TYP MAX UNIT FM VIN=0 MIN 10 15 mA AM VIN=0 7 10 FM Input Limiting Voltage VIN(lim) 1 -3dB VOD 1 VIN=66dBµ Signal Noise Ratio S/N 1 VIN=80dBµ 65 dB Total Harmonic THD 1 VIN=80dBµ 0.05 % AMR 1 VIN=80dBµ 38 dBµ Detector Output 57 40 46 dBµ 85 114 mVrms Distortion Am Rejection UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R110-007,A UTC TA7640AP LINEAR INTEGRATED CIRCUIT PARAMETER SYMBOL CHART TEST CONDITIONS MIN TYP MAX UNIT VM 1 VIN=100dBµ 1.6 1.75 1.9 V VL 1 IL=1mA 46 52 dB Leverl Meter Driving Voltage Led Driving Sensitivity AM Gain GV 1 VIN=26dBµ 20 30 60 mVrms Detector Output Voltage VOD 1 VIN=60dBµ 65 95 125 mVrms Signal To Noise Ratio S/N 1 VIN=60dBµ 47 dB Total Harmonic THD 1 VIN=60dBµ 1 % Signal Meter Output VM 1 VIN=100dBµ Level Meter Driving VL 1 IL=1mA 32 Oscillation Stop Voltage Vstop 1 RDUMP=∝ 1.5 V Pin 5 Output Impedance R09 f=1KHZ 3 KΩ Distortion 1.6 1.75 1.9 V dBµ Voltage TEST CIRCUIT Vcc=5V 10Ω mA 0.022 µF 0.022 µF 0.01 µF 4.7kΩ FM IN 75Ω 0.015 µF FM\AM OUT 220Ω 16 15 14 13 12 11 10 9 7 8 Vin UTC TA7640AP 5 FM CLOSE FM OPEN 33kΩ 47 µF 50Ω Vin UTC 4 0.033 µF 0.047µF 50Ω 3 6 68kΩ AM IN 2 0.047 µF 1 LED 390 Ω 100Ω VL(ON) 22 µF UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R110-007,A