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| Datasheet File OCR Text: |
| NTE723 Integrated Circuit FM Sound System Description: The NTE723 is a monolithic integrated circuit FM detector/limiter and audio preamplifier that requires a minimum of external components for operation. It includes three stages of IF limiting and a differential-peak-detection circuit. Features: D Simple detector alignment: one coil D Sensitivity: 3dB limiting voltage 250V typical at 10.7MHz D Low harmonic distortion D Excellent AM rejection 55dB typ. at 10.7MHz D Internal audio preamplifier Absolute Maximum Ratings: Power Supply Current (Pin5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA Supply Voltage (Pin5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.5V Power Dissipation (Note 1), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 715mW Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to +85C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 to +150C Lead Temperature (During Soldering , 10sec), TL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300C Note 1. For operation in ambient temperatures above 25C, the device must be derated based on a 150C maximum junction temperature and a thermal resistance of 175C/W junction to ambient. Electrical Characteristics: (TA = +25C unless otherwise specified) Parameter Static Characteristics Supply Current I5 VCC = 8.5V VCC = 11.2V VCC = 12.5V Detector Output Level, High Detector Output Level, Low Audio Amplifier Output V7 V8 V12 VCC = 11.2 8.5 - - - - - 15 17.5 19 6.1 5.4 5.2 - - 29 - - - mA mA mA V V V Symbol Test Conditions Min Typ Max Unit Electrical Characteristics (Cont'd): (TA = +25C unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit V dB V % Dynamic Characteristics (V+ = 11.2V, fo = 10.7MHz, f = 75kHz, fm = 400Hz) Input Limiting Threshold AM Rejection Recovered AF Voltage (At Pin12) Total Harmonic Distortion Audio Preamplifier Voltage Gain Total Harmonic Distortion AV(AF) THD VIN = 100mV, f = 400Hz VOUT = 2V, f = 400Hz - - 21 1.5 - 5.0 dB % VIN(LIM) AMR VO(AF) THD AM: 1kHz @ 30%, VIN = 100mV - - - - 250 55 1.5 1 600 - - 2 Pin Connection Diagram IF Input IF Input Bias GND Zener Regulator VCC N.C. De-Emphasis 1 2 3 4 5 6 7 14 Audio Input 13 Tone Control 12 Audio Output 11 N.C. 10 Detector 9 8 Detector Buffer Output 14 8 1 7 .785 (19.95) Max .200 (5.08) Max .300 (7.62) .100 (2.45) .600 (15.24) .099 (2.5) Min |
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