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| Datasheet File OCR Text: |
| NTE1236 Integrated Circuit TV Sound IF System Description: The NTE1236 monolithic TV/FM sound system consists of a multistage limiting IF amplifier, DC gain control, FM detector, and an audio driver constructed on a single silicon chip. Excellent sensitivity, high AM rejection and an internally regulated power supply coupled with low external component requirements makes the NTE1236 suitable for a wide variety of applications including TV sound channels, FM radios and mobile communications equipment. Features: D Electronic Attenuator Replaces Conventional Volume Control D High Sensitvity D Low Harmonic Distortion D Excellent AM Rejection: (5-dB typ. at 4.5MHz) D Internal Zener Diode Regulated Supply D Differential Peak Detector Requires Only One Single-Turned Coil Absolute Maximum Ratings: (TA = +25C, unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3V Input Current, ICC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 625mW Operating Temperature Range, Topg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +75C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +150C Note *. Pin 5 may be connected to any positive voltage through a suitable dropping resistor, provided the dissipation rating is not exceeded. Note **. For temperatures above 25C, derate linearly at 5.0mW/C. Electrical Characteristics: (TA = +25C, unless otherwise specified) Parameter Static Characteristics Supply Current Zener Regulating Characteristics Internal Power Dissipation Dynamic Characteristics Input Limiting Voltage at -3dB AM Rejection Ratio Recovered AF Voltage Total Harmonic Distortion Input Impedance Parallel Resistance Parallel Capacitance Output Impedance Parallel Resistance Parallel Capacitance Output Impedance Pin 7 Pin 8 Attenuation AF Voltage Gain Total Harmonic Distortion Undistorted Output Voltage AF Input Resistance AF Output Resistance ATT GV(ATF) THD(2) VO RI RO Rx = VI = 0.1Vrms, f = 400Hz VO = 2Vrms, f = 400Hz THD = 5%, f = 400Hz f = 400Hz VIN(lim) AMR VOD THD Rip Cip Rop Cop zo f = 400Hz Terminal No. 9-GND f = 4.5MHz fo = 4.5MHz, fM = 400Hz, f = 25kHz f = 4.5MHz, FM: f = 25kHz, AM: 30% @ 45MHz f = 4.5MHz, VI = 0.1V, f = 25kH fM = 400Hz 25kHz, 400H Terminal No. 1-2 f = 4.5MHz - 40 0.5 - - - - - - - 60 17.5 - 2 - - 200 50 0.75 0.9 17 4 3.25 7.5 7.5 300 80 20 1.5 2.5 70 270 400 - - 2.0 - - - - - - - - - - - - V dB Vrms % k pF k pF k dB dB % Vrms k ICC VZ PD VCC = 9V 10 10.3 330 16 11.2 345 24 12.2 360 mA V mW Symbol Test Conditions Min Typ Max Unit Pin Connection Diagram IF Input IF Input GND GND VCC Volume Control De-Emphasis 1 2 3 4 5 6 7 14 13 12 11 10 9 8 AF Input Tone Control AF Output N.C. IF Detector Tuning IF Detector Tuning AF 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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