NTE709 Integrated Circuit TV/FM Sound IF Amplifier Description: The NTE709 is a monolithic integrated circuit in a 14–Lead DIP type package providing a multi–stage wideband amplifier/limiter, an FM quadrature detector, and an emitter–follower audio output stage and is designed for use in FM receivers or in sound IF of TV receivers. Features: D Good Sensitivity D Excellent AM Rejection D Low Harmonic Distortion D Single–Adjustment Timing D High gain to 50MHz D 500mV Recovered Audio at 10.7MHz D Wide Operating Voltage Range Absolute Maximum Ratings: Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V Package Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 670mW Derate Above +70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.3mW/°C Operating Ambient Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +85°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C Static Electrical Characteristics: (VCC = 12V, TA = +25°C unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Supply Current ICC 12 17 27 mA Terminal Voltage V1 4.3 5.0 6.3 V V2 – 3.65 – V V6 – 1.45 – V V9 – 1.5 – mV V10 – 1.45 – V Static Electrical Characteristics (Cont’d): (VCC = 12V, TA = +25°C unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Detector Output Resistance R1 – 200 – Ω IF Input Resistance R4 – 5.0 – kΩ IF Output Resistance R10 – 60 – Ω Detector Input Resistance R12 – 70 – kΩ De–Emphasis Resistance R14 6 9 12 kΩ IF Input Capacitance C4 – 11 – pF Detector Input Capacitance C12 – 2.7 – pF Dynamic Characteristics: (VCC = 12V, TA = +25°C, fo = 10.7MHz, fm = 400Hz, ∆f = ±75kHz, Peak Separation = 550kHz unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Ae Vin ≤ 300µVrms – 53 – dB Amplifier Output Voltage Vout Vin = 10mVrms – 1.45 – VP–P Input Limiting Threshold VTH Note 1 – 400 800 µVrms Recovered Audio Output Vout V12 = 60mVrms – 500 – mVrms Total Harmonic Distortion THD 100% FM Modulation – 1.0 – % AM Rejection AMR Vin = 10mVrms, Note 2 – 40 – dB Amplifier Voltage Gain Note 1. The input limiting threshold is the FM input voltage for a recovered audio output which is 3dB less than the recovered audio for an FM input voltage of 200mVrms. Note 2. The amplitude modulation rejection is determined by: AMRdB = 20 log Vout for 100% FM Vin / Vout for 30% AM Vin Pin Connection Diagram Detector Output 1 Reference 2 N.C. 3 IF Input 4 14 De–Emphasis 13 VCC 12 Det Input 11 Test Point Decoupling 5 10 Amplifier Output IF Input Ref 6 9 Amplifier Low Output GND 7 8 N.C. 14 8 1 7 .785 (19.95) Max .300 (7.62) .200 (5.08) Max .100 (2.45) .600 (15.24) .099 (2.5) Min