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| Datasheet File OCR Text: |
| NTE1237 Integrated Circuit AM Radio without Audio Stage Features: D Small External Part Count D Tuning Meter Circuit D Wide AGC Range Absolute Maximum Ratings: (TA = +25C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V Power Dissipation, PT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500mW Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +70C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +125C Electrical Characteristics: (VCC = 12V, f = 1MHz unless otherwise specified) Parameter Maximum Sensitivity Signal-to-Noise Ratio Symbol MS S/N Test Conditions fM = 400Hz, MOD = 30%, Output=50mV fM = 400Hz, Input = 40dB/m MOD = 30% Input = 74dB/m fM = 400Hz MOD = 30%, Input = 74dB/m MOD = 80%, Input = 74dB/m MOD = 30%, Input =120dB/m Detector Voltage Tuning Meter Circuit Quiescent Current VO(DET) fM = 400Hz, MOD = 30%, Input = 74dB/m TM IQ Input = 74dB/m Min Typ Max Unit 37.5 40.0 42.5 8 42 - - - 12 45 1.0 1.5 2.5 - - 2.0 3.0 10 dB dB dB % % % Total Harmonic Distortion THD 140 170 230 mW 50 - - 13 100 21 % mA Pin Connection Diagram Input 1 VCC RF/OSC 2 VCC RF 3 Converter Output 4 OSC Tank 5 Converter Input 6 IF Input 7 14 Tuning Meter 13 AGC Amp Input 12 Detector Input 11 Audio Output 10 VCC IF/Audio 9 GND 8 IF Output 14 8 1 7 .827 (21.0) Max .300 (7.62) .197 (5.0) Max .100 (2.45) .600 (15.24) .099 (2.5) Min |
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