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NTE740A Integrated Circuit Audio Power Amp, 2W
Description: TheNTE740A is an Audio Power Amplifier in a 14-Lead DIP type package designed for minimal external component requirements. Features: D Low Distortion D Low Quiescent Current D 34dB Internally Fixed Gain D High Input Impedance D Thermal Overload Protection D Output Short Circuit Current Limiting Absolute Maximum Ratings: Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26V Peak Output Current, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2A Operating Ambient Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -25 to +70C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 to +150C Electrical Characteristics: (TA = +25C, VCC = 18V, f = 1kHz, RL = 8 unless otherwise specified)
Parameter Supply Voltage Range Quiescent Supply Current Quiescent Output Voltage Output Voltage Swing Voltage Gain Total Harmonic Distortion Audio Output Power Input Impedance Power Supply Rejection Ratio Equivalent Input Noise Voltage Sensitivity Input Voltage Bandwidth (-3dB) ein BW Symbol VCC ICC VOQ VO AV THD Pout Zin PSRR No Signal Applied No Signal Applied, Note 1 Pout = 2W Pout = 0 Pout = 2W, Note 2 Pout = 50mW, Note 3 THD = 2%, RL = 8, Note 4 THD = 2%, RL = 16, Note 4 Each Input Pout = 0, f = 120Hz, Note 5 f = 20Hz to 20kHz eout = 4.0Vrms, Pout = 2W Pout = 1W, Note 6 Test Conditions Min 9 - 9 - 31 - - 2.0 2.0 140 - - - - Typ 10 15 - 12 34 1.0 0.5 2.5 2.5 170 40 60 80 100 Max 26 - - - 37 2.0 1.0 - - - - - - - Unit V mA V VP-P dB % % W W k dB Vrms mV kHz
The quiescent output voltage typically equals 1/2 the normal VCC voltage = 1 Volt. When driving a 16 load, the nominal VCC is 24V. When driving a 16 load, the maximum low level distortion is reduced to 0.50%. Tested at VCC equals nominal and measured in watts (rms). Measurement made with a 5F capacitor from Pin1 to GND. Voltage at Pin14 is at a ripple frequency of 60Hz. Note 6. Unity gain occurs between 10 and 100MHz.
Note Note Note Note Note
1. 2. 3. 4. 5.
Pin Connection Diagram
Bypass 1 (+) Input 2 GND 3 GND 4 GND 5 (-) Input 6 GND 7
14 VCC 13 N.C. 12 GND 11 GND 10 GND 9 N.C. 8 Output
14
8
.280 (7.1) Max 1 7
.770 (19.5) Max
.300 (7.62)
.160 (4.0) Max
.100 (2.45) .600 (15.24)

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