NTE1038 Integrated Circuit 3.5 Watt Audio Power Amplifier Features: D SRPP Circuit (Shunt−Regulated, Push−Pull) D High Voltage Gain − 44dB typ D Low Thermal Reistance − 10°C/W (max) Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V Power Dissipation (TC = +65°C), PT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6W Output Current, IO(peak) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.25A Operating Temperature Range (Note 1), Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −30° to +70°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55° to +125°C Note 1. Value when attached to the heat sink plate (θf = 10°C/W) at PT = 2.7W Electrical Characteristics: (VCC = 13.2V, RL = 4Ω, f = 1kHz) Parameter Symbol Voltage Gain GV Output Power Pout Total Harmonic Distortion T.H.D. Signal to Noise Ratio S/N Input Impedance Rin Test Conditions Min Typ Max Unit − 44 − dB 3.0 3.5 − W Pout = 0.5W − 0.25 0.6 % Rg = 0, Pout = 0.5W − 85 − dB 11 15 − kΩ T.H.D. = 10% Pin Connection Diagram Bypass 1 Feedback 2 Bypass 3 10 VCC 9 Output 8 GND Input 4 7 Feedback Bias 5 6 Bias 1.181 (30.0) .945 (24.0) .630 (16.0) 10 6 .315 (8.0) 1 5 .449 (11.4) .100 (2.54) .295 (7.5) .166 (4.2)