NTE1381 Integrated Circuit Audio Power Amp, 2.1W Features: D High Power Output at Low Voltage: PO = 2.1W Typ (9V, 4Ω) D Low Quiescent Current Absolute Maximum Ratings: (TA = +25°C unless oherwise specified) Maximum Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13V Peak Supply Current, ICC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5A Power Dissipation, PD No Heat Sink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2W With Heat Sink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.25W Operating Temperature Range,Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +70°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40° to +150°C Electrical Characteristics: (TA = +25°C, VCC = 9V, RL = 4Ω, f = 1kHz unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Quiescent Circuit Current ICQ Vi = 0 − 15 25 mA Open Loop Voltage Gain GVO Vi = 0.2mV − 70 − dB Closed Loop Voltage Gain GVC Vi = 5mV 42 45 48 dB 0.63 0.89 1.25 V 1.3 2.1 − W VCC = 9V, RL = 8Ω, THD = 10% − 1.4 − W Output Power PO THD = 10% Total Harmonic Distortion THD Vi = 5mV − 0.5 1.5 % Output Noise Voltage VNO Rg = 10kΩ − − 3 mV 12 20 − kΩ Input Impedance Zi Pin Connection Diagram Decoupling 1 14 N.C. Input 2 13 NFB Ripple Filter 3 12 Phase Comp N.C. 4 11 Phase Comp Ripple Filter 5 10 GND Bootstrap 6 9 N.C. VCC 7 8 Output Tab .083 (2.1) Dia.768 (19.5) 7 1 .261 (6.6) .256 (6.5) 14 8 .200 (5.08) .067 (1.7) .300 (7.62) 1.004 (25.5) .149 (3.8) .110 (2.79) .055 (1.4) 3° − 15° .020 (.508) .600 (15.24) .142 (3.6)