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| Datasheet File OCR Text: |
| NTE826 Integrated Circuit TV Sound System, 2W Description: The NTE826 2W sound IF circuit is designed for television and related applications. The circuit is comprised of 2 independent functions: a sound IF and an audio power amplifier. The sound IF portion of the circuit utilizes circuitry similar to the NTE712. An improved volume control circuit is included, however, so that recovered audio is a linear function of the resistance of the control potentiometer. Audio power amplification is accomplished with circuitry similar to the popular NTE740A audio power amplifier, featuring both short circuit and thermal protection. Features: D Minimum Undistorted Output: 2W D Linear Volume Control: 75dB range D Fixed Voltage Gain in Audio Amplifier D Short Circuit and Thermal Protection Absolute Maximum Ratings: Supply Voltage (Pin2), VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26V Input Current (Pin6), IMAX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50mA Input Signal Voltage (Between Pin12 and Pin13) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Vp-p Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to +70C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 to +150C Maximum Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150C Lead Temperature (During Soldering, 10sec), TL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300C Electrical Characteristics: Parameter Power Output Test Conditions VCC = 24V, RL = 16, THD = 10% VCC = 16V, RL = 8, THD = 10% VCC = 14V, RL = 8, THD = 10% VCC = 12V, RL = 8, THD = 10% Min - - - - Typ 1.3 2.6 1.9 1.3 Max - - - - Unit W W W W Electrical Characteristics (Cont'd): Parameter Zero Regulating Voltage (Pin6) Feedthrough Signal (Pin1) Current into Pin6 AM Rejection Recovered Audio (Pin8) Input Limiting Voltage (Pin16 to Pin1) Output Noise, Input Signal Removed (Pin1) Distortion (Pin8) Input Impedance (Pin16) Current into Pin2 (Zero Audio Output at Pin1) V2 = 24V Resistance at Pin7 = 10 f = 25kHz, fo = 4.5MHz Resistance at Pin7 = 0 Voltage at Pin6 = 10V VIN = 1 to 100mVrms, f = 25kHz, AM = 30% Test Conditions Min Typ Max Unit V mVrms mA dB mVrms V/V mVrms % k mA 10.5 11.5 12.5 - 7.0 40 350 40 - - 50 2 - 15 10.8 15.0 - 500 - 70 1.2 200 5 - - 60 150 2.0 - 20 Pin Connection Diagram Power Amp Output 1 Power Amp V+ 2 Ripple Bypass 3 Heat Sink 4 Heat Sink 5 IF V+ 6 Volume Control 7 Detector Output 8 IF Output 9 18 Power Audio GND 17 Low Level Audio GND 16 Power Amp Input 15 Heat Sink 14 Heat Sink 13 IF Input 12 IF In Decpl 11 IF GND 10 Detector Input 18 10 1 9 .870 (22.1) Max .150 (3.8) .250 (6.35) .100 (2.54) .800 (20.3) .125 (3.17) Min |
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