NTE1654 Integrated Circuit FM/AM IF System (Low Supply Voltage Use) Features: D FM IF Amplifier D FM Quadrature Detector D AM Mixer D AM Local Oscillator D AM IF Amplifier D D D D AM Detector Signal Meter Driver Low Supply Voltage Use: VCC = 3V to 8V Very Few External Parts Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8V Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 750mW Derated Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6mW/°C Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –25° to +75°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C Electrical Characteristics: (TA = +25°C unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit VIN = 0 at FM – 17 31 mA VIN = 0 at AM – 15 31 mA FM Supply Current ICC Input Limiting Voltage VIN(lim) –3dB Limiting – 34 40 dBµV Recovered Output Voltage VOD(1) ∆f = ±22.5kHz, VIN = 60dBµV 40 60 80 mVrms Signal to Noise Ratio S/N(1) VIN = 80dBµV – 70 – dB Total Harmonic Distortion THD(1) VIN = 80dBµV – 0.3 – % – 50 – dB AM Rejection Ratio AMR AM: 1kHz, 30%, FM: ∆f = ±22.5kHz VIN = 80dBµV Meter Driver Voltage V2(FM) VIn = 80dBµV 0.8 1.0 1.2 V(DC) VOD(AM) VIN = 60dBµV 90 130 180 mVrms AM Recovered Output Voltage Gain GAIN fIN = 455kHz, VIN = 20dBµV 10 24 52 mVrms Meter Driver Voltage V2(AM) VIN = 60dBµV – 1.0 – VDC Total Harmonic Distortion THD(AM) VIN = 60dBµV – 1.0 – % Signal to Noise Ratio S/N(AM) – 40 – dB – 1.5 – VDC Local OSC. Stop Voltage Vstop VIN = 60dB Pin Connection Diagram GND 1 16 AM OSC AM Output 2 VCC 2 3 15 Mixer Output 14 VCC 1 FM Output 2 (AFC) 4 13 AM Mixer Input Quad 5 12 IF 1 Input AGC 6 11 AM/FM Switch 10 IF 1 Output 7 IF 2 Input 8 16 9 Bypass 9 .260 (6.6) Max 1 8 .785 (19.9) Max .300 (7.62) .200 (5.08) Max .245 (6.22) Min .100 (2.54) .700 (17.7)