NTE1579 Integrated Circuit Fm−IM Amplifier/Demodulator Features: D Wide Range of the Operating Supply Voltage D Low Distortion: THD = 0.06% Typ. D High Signal−to−Noise Ratio: S/N = 75dB Typ. D High Input SensitivityL Vin (lim) = 31dBµ Typ. D Capable of Driving the Signal Meter Under Low Input Signal D High Stability Against Abnormal Oscillation Functions: D FM IF Amplifier D Quandrature Detector D Audio Post−Amplifier D Muting Circuit D AFC, Center Meter Driver D Muting Control Driver D Analog Control Driver Absolute Maximum Ratings: Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16V Power Dissipation (TA = +60°C), PT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 624W Operating Temperature Range, Topt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +70°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55° to +125°C DC Electrical Characteristics: (TA = +25°C, VCC = 8V, Vin = 0dBµ) Parameter Symbol Test Conditions Min Typ Max Unit DC Voltage at Pin 1 V1 − 1.95 − V DC Voltage at Pin 2 V2 − 1.95 − V DC Voltage at Pin 3 V3 − 1.95 − V DC Voltage at Pin 6 V6 − 5.60 − V DC Voltage at Pin 7 V7 − 5.60 − V DC Voltage at Pin 10 V10 − 5.60 − V AC Electrical Characteristics: (TA = +25°C, VCC = 8V, fc = 10.7MHz, fm = 1kHz, ∆f = 75kHz dev.) Symbol Parameter Test Conditions Min Typ Max Unit Vin = 100dBµ, Mute ON − 32 39 mA − 31 37 dBµ 230 300 390 mVrms Operating Current ICC Limiting Sensitivity Vin(lim) at −3dB Recovered Output VO(AF) Vin = 100dBµ Total Harmonic Distortion THD − 0.06 0.3 % Signal−to−Noise Ratio S/N 67 75 − dB AM Rejection AMR Vin = 100dBµ, fm(AM) = 1kHz, 30% MOD 45 55 − dB Muting Attenuation Mute(ATT) Vin = 100dBµ, V5 = 2V 68 75 − dB Muting Band Width BW(Mute) Detuned Frequency under 1.4V of Pin = 12V, Vin = 100dBµ − 100 − kHz Muting Sensitivity Vin(Mute) Vin under 1.4V of Pin 12 Voltage − 35 − dBµ V13−0 Pin 13 voltage under Vin = 0dBµ − 0.2 − V V13−60 Pin 13 voltage under Vin = 60dBµ − 1.65 − V V13−100 Pin 13 voltage under Vin = 100dBµ − 4.7 − V V15 Pin 13 voltage under Vin = 86dBµ − 3.7 − V Analogue Control Voltage AGC Control Voltage Pin Connection Diagram IF Input 1 16 Substrate GND AM FM Switch Circuit 2 15 Delayed AGC AM FM Switch Circuit 3 14 Substrate GND Substrate GND 4 13 Tuning Meter Circuit Muting Switch Circuit 5 12 To MPX IC Audio Output 6 11 VCC AFC Output 7 10 DC Reference Bias IF Output 8 9 Quadrature Input 16 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)