NTE1273 Integrated Circuit Dual, Audio Power Amp, 5W/Ch Description: The NTE1273 is a bipolar monolithic integrated circuit in a 20−Lead DIP type package. This 2 channel audio power amplifier is ideal for use in high power car radio applications. Features: D Low Distortion D Self centering Bias D High Peak Output Current D Dual Channel/BTL Amp Use D Low Offset Voltage (Between Ch1 and Ch2 DC Voltage) Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V Output Peak Current (Per Channel), IO(Peak) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4A Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20W Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +75°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55° to +150°C Electrical Characteristics: (TA = +25°C, VCC = 13.2V, RL = 4Ω, Rg = 600Ω, Rf = 68Ω, f = 1kHz, Dual channel operation, GV = 54dB unless otherwise specified) Parameter Quiescent Current Output Power Maximum Output Power Symbol Test Conditions Min Typ Max Unit 20 36 70 mA 4.2 4.8 − W BTL, THD = 10%, Note 1 − 15 − W THD = 10%, RL = 2Ω − 7.5 − W Dual − 6 − W BTL − 20 − W ICCQ PO POM THD = 10%, Note 1 Total Harmonic Distortion THD Dual, PO = 1W − 0.2 0.8 % Output Noise Voltage VNO Rg = 10kΩ − 1.2 3.0 mV BW = 50Hz to 20kHz − 1.2 3.0 mV Note 1. GV = 47kΩ/Rf (GVmax = 70dB) Electrical Characteristics (Cont’d): (TA = +25°C, VCC = 13.2V, RL = 4Ω, Rg = 600Ω, Rf = 68Ω, f = 1kHz, Dual channel operation, GV = 54dB unless otherwise specified) Parameter Symbol Channel Separation CSR Ripple Rejection RR Input Resistance RIN Voltage Gain GVO Test Conditions Min Typ Max Unit Rg = 10kΩ, PO = +10dBm − −58 − dB VIN = 0dBm, 100Hz, Rg = 0Ω − −48 − dB − 40 − kΩ Rf = 0Ω 70 75 − dB VIN = −.245mVrms 70 75 − dB Pin Connection Diagram Bypass 1 1 Input 1 2 Feedback 1 3 High Freq Comp 1 4 Bypass 1 5 High Freq Comp 1 6 Bypass 1 7 GND 8 Output 1 9 VCC 10 20 Bypass 2 19 Input 2 18 Feedback 2 17 High Freq Comp 2 16 GND 15 Bypass 2 14 High Freq Comp 2 13 Bypass 2 12 GND 11 Output 2 .945 (24.0) 11 20 .142 (3.6) .335 (8.5) 10 1 1.200 (30.5) Max .700 (17.78) .602 (15.3) .197 (5.0) .161 (4.0) .020 (.508) 1.062 (26.9) .118 (2.9) Typ