NTE708 Integrated Circuit TV/FM Sound IF Amplifier Features: D Greatly Simplifier FM Demodulator Alignment D Excellent Performance at V+ = 8V Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Power Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16V Peak Input Voltage (Pin4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5V Power Dissipation (TA = +25°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 625mW Derate Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mW/°C Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +75°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C Electrical Characteristics: (V+ = 12V, TA = +25°C unless otherwise specified) Parameter Drain Current Pin 13 Test Conditions Min Typ Max Unit V+ = 8V 10 12 19 mA V+ = 12V – 15 21 mA Amplifier Input Reference Voltage 6 – 1.45 – V Detector Input Reference Voltage 2 – 3.65 – V Amplifier High Level Output Voltage 10 1.25 1.45 1.65 V Amplifier Low Level Output Voltage 9 – 0.145 0.2 V Detector Output Voltage 1 V+ = 8V – 3.7 – V V+ = 12V – 5.4 – V Amplifier Input Resistance 4 – 5.0 – kΩ Amplifier Input Capacitance 4 – 11 – pF Detector Input Resistance 12 – 70 – kΩ Detector Input Capaciance 12 – 2.7 – pF Amplifier Output Resistance 10 – 60 – Ω Detector Output Resistance 1 – 200 – Ω De–Emphasis Resistance 14 – 8.8 – kΩ Dynamic Characteristics: (FM Modulation Freq = 1kHz, Source Resistance = 50Ω, TA = +25°C for all tests) Parameter Pin Test Conditions Min Typ Max Unit (V+ = 12V, fo = 4.5MHz, ∆f = ±25kHz, Peak Separation = 150kHz) Amplifier Voltage Gain 10 Vin ≤ 50µVrms – 60 – dB AM Rejection 1 Vin = 10mVrms, Note 1 – 36 – dB Input Limiting Threshold Voltage 4 – 250 – µVrms Recovered Audio Output Voltage 1 Vin = 10mVrms – 0.72 – Vrms Output Distortion 1 Vin = 10mVrms – 3 – % (V+ = 12V, fo = 5.5MHz, ∆f = ±50kHz, Peak Separation = 260kHz) Amplifier Voltage Gain 10 Vin ≤ 50µVrms – 60 – dB AM Rejection 1 Vin = 10mVrms, Note 1 – 40 – dB Input Limiting Threshold Voltage 4 – 250 – µVrms Recovered Audio Output Voltage 1 Vin = 10mVrms – 1.2 – Vrms Output Distortion 1 Vin = 10mVrms – 5 – % (V+ = 8V, fo = 10.7MHz, ∆f = ±75kHz, Peak Separation = 550kHz) Amplifier Voltage Gain 10 Vin ≤ 50µVrms – 53 – dB AM Rejection 1 Vin = 10mVrms, Note 1 – 37 – dB Input Limiting Threshold Voltage 4 – 600 – µVrms Recovered Audio Output Voltage 1 Vin = 10mVrms – 0.3 – Vrms Output Distortion 1 Vin = 10mVrms – 1.4 – % (V+ = 12V, fo = 10.7MHz, ∆f = ±75kHz, Peak Separation = 550kHz) Amplifier Voltage Gain 10 Vin ≤ 50µVrms – 53 – dB AM Rejection 1 Vin = 10mVrms, Note 1 – 45 – dB Input Limiting Threshold Voltage 4 – 600 – µVrms Recovered Audio Output Voltage 1 Vin = 10mVrms – 0.48 – Vrms Output Distortion 1 Vin = 10mVrms – 1.4 – % Note 1. 100% FM, 30% AM Modulation. Pin Connection Diagram Audio Output 1 Detector Input Ref 2 N.C. 3 IF Input 4 14 De–Emphasis 13 VCC 12 Det Input (QuadratureNetwork) 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