NTE1234

NTE1234 Integrated Circuit FM IF Amplifier Description: The NTE1234 is designed for use in FM IF and TV sound IF amp applications. This device contains 3 different stage differential IF amp and a differential peak detector function. Features: D Excellent AM Rejection: (AMR = 50db typ.) D High Sensitivity: (VIN(lim) = 50dBµV typ.) D Operating Supply Voltage Range: (VCC = 8 to 15V, THD = 0.2% typ.) D High Recovered Output Voltage: (VOD = 430mV typ. ±75kHz, dev.) D Low Distortion: (THD = 0.2% typ. 500mV typ. ∆f = ±75kHz, dev.) Absolute Maximum Ratings: (TA = +25°C, unless otherwise specified) Supply Voltage, VCC, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V Input Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.7Vrms Power Dissipation (Note 1), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400mW Operating Temperature Range, Topg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +75°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55° to +125°C Note 1. Derate above +25°C in this proportion of 4/mW/°C. Electrical Characteristics: (TA = +25°C, VCC = 12V, unless otherwise specified) Parameter Supply Current Output Terminal DC Voltage (Pin 7) Recovered Output Voltage Input Limiting Voltage Total Harmonic Distortion Signal to Noise Ratio AM Rejection Ratio Symbol ICC V7 VOD VIN(lim) THD S/N AMR VIN = 0 VIN = 0, Short Pin 5,6 f = 10.7MHz, fM = 400Hz, ∆f = ±75kHz dev., VIN = 80dBµV f = 10.7MHz, fM = 400Hz, ∆f = ±22kHz dev., −3dB limiting f = 10.7MHz, fM = 400Hz, ∆f = ±22kHz dev., VIN = 80dBµV f = 10.7MHz, fM = 400Hz, ∆f = ±22kHz − 0 kHz VIN = 80dBµV f = 10.7MHz, fM = 400Hz, VIN = 80dBµV, FM: 75kHz dev, AM: 30% MOD Test Conditions Min Typ 8 4.0 11 4.8 Max 15 5.5 700 55 − − − Unit mA V mVrms 300 500 − − − − 50 0.2 60 50 dBµV % dB dB Electrical Characteristics (Cont’d): (TA = +25°C, VCC = 12V, unless otherwise specified) Parameter Output Resistance Input Impedance Parallel Resistance Parallel Capacitance Output Impedance Parallel Resistance Parallel Capacitance Symbol RO rip cip rop cop Pin Connection Diagram Test Conditions f = 400MHz, Pin 7 − GND f = 10.7MHz, Pin 1 − GND Min Typ 6.2 − − 7.7 5 4.5 1.3 4 Max 9.5 − − − − Unit kΩ kΩ pF kΩ pF f = 10.7MHz, Pin 5 − GND − − 7 Output 6 Detector 5 Detector Tank Circuit 4 GND 3 VCC 2 Feedback 1 Input .128 (3.2) .700 (17.8) Max 1 7 .323 (8.2) Max .099 (2.5) Min .012 (0.25) .100 (2.54) .600 (15.24)