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| NTE1294 Integrated Circuit Audio Power Amplifier, 1.2W Description: The NTE1294 is a monolithic integrated audio amplifier in an 8-Lead DIP type package designed for use as a low frequency class B power amplifier with a wide supply voltage range (3V to 16V) in portable radios, cassette recorders, and players etc. Features: D Minimum Working Supplu Voltage: Vs = 3V Min D Low Quiescent Current D Low Number of External Components D Good Ripple Rejection D No Cross-over Distortion D Low Power Dissipation D Output Power: Po = 2W at 12V/8 Po = 1.6W at 9V/4 Po = 1.2W at 9V/8 Absolute Maximum Ratings: Supply Voltage, Vs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16V Output Peak Current, Io . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5A Power Dissipation (TA = +50C), Ptot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1W Junction Temperature Range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to +150C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to +150C Maximum Thermal Resistance, Junction-to-Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . 100C/W Electrical Characteristics: (VS = 9V, TA = +25C unless otherwise specified) Parameter Supply Voltage Quiescent Output Voiltage (Pin5) Quiescent Drain Current Bias Current (Pin3) Symbol Vs Vo Id Ib Test Conditions Min 3 4.0 - - Typ - 4.5 4 0.1 Max Unit 16 5.0 12 - V V mA A Electrical Characteristics (Cont'd): (VS = 9V, TA = +25C unless otherwise specified) Parameter Output Power Symbol Po Test Conditions d = 10%, f = 1kHz, Rf = 120 Vs = 12V, RL = 8 Vs = 9V, RL = 4 Vs = 9V, RL = 8 Vs = 6V, RL = 4 Vs = 3.5V, RL = 4 Vs = 3V, RL = 4 Input Sensitivity Vi(rms) Po = 1.2W, RL = 8, f = 1kHz Po = 50mW, RL = 8, f = 1kHz Input Resistance (Pin3) Frequency Response (-3dB) Ri B f = 1kHz CB = 680pF RL = 8, C5 = 1000F, CB = 220pF Rf = 120 Po = 500mW, Rf = 33 RL = 8, Rf = 120 f = 1kHz f = 1kHz, RL = 8 RL = 8, f = 1kHz Note 1 Note 1 Po = 1.2W, RL = 8, Gv = 34dB, Note 1 R1 = 10k R1 = 50k Rf = 33 Rf = 120 - - - - - - - - - - Rf = 33 Rf = 120 Rf = 33 Rf = 120 Min - - 0.9 - - - - - - - - Typ 2 1.6 1.2 0.75 0.25 0.20 16 60 3.5 12 5 25 to 7000 25 to 20000 0.8 0.4 75 45 34 3 0.4 80 70 42 - - - - - - - - - - Max Unit - - - - - - - - - - - W W W W W W mV mV mV mV M Hz Hz % % dB dB dB V nA dB dB dB Distortion d Voltage Gain (Open Loop) Voltage Gain (Closed Loop) Input Noise Voltage Input Noise Current Signal to Noise Ratio Gv Gv eN iN S+N N Supply Voltage Rejection SVR RL = 8, fripple = 100Hz, C6 = 47F, Rf = 120 Note 1. B = 22Hz to 22kHz Pin Connection Diagram Frequency Compensation Gain Setting Input GND 1 2 3 4 8 7 6 5 Ripple Rejection Bootstrap VCC Output 8 5 .256 (6.52) Max 1 4 .393 (10.0) Max .150 (3.81) .300 (7.62) .100 (2.54) .300 (7.62) .070 (1.77) Min |
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