NTE1228 Integrated Circuit Audio Power Amp, 2.1W Features: D AF Output Power D Sufficient Regulation Under Dry Battery Operation Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Maximum Supply Voltage, VCCmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13V Allowable Power Dissipation, Pdmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2W Allowable Power Dissipation (Note 1), Pdmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.25W Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +70°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +150°C Note 1. With 50 x 50mm2 printed board for radiator. Recommended Operation Condition: (TA = +25°C unless otherwise specified) Recommended Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9V Load Resistance, RL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4,8Ω Electrical Characteristics: (TA = +25°C, VCC = 9V, RL = 4Ω, f = 1kHz unless otherwise specified) Parameter Symbol Quiescent Current ICCO Voltage Gain VG Output Power Total Harmonic Distortion Input Resistance Output Noise Voltage PO THD Test Conditions Min Typ Max Unit – 15 25 mA Open Loop – 70 – dB At Appointed Circuit 42 45 48 dB THD = 10%, RL = 4Ω 1.3 2.1 – W THD = 10%, RL = 8Ω – 1.4 – W PO = 250mW – 0.5 1.5 % 12k 20k – Ω Rg = 10kΩ – – 3 mV Rg = 0 – – 1.0 mV ri VNO Pin Connection Diagram Audio Output 1 14 VCC N.C. 2 13 Ripple Filter Capacitor GND 3 12 Ripple Filter Capacitor Equalization Feedback Network 4 11 N.C. Equalization Feedback Network 5 10 Ripple Filter Capacitor 9 Audio Input Series RC Network 6 N.C. 7 .099 (2.52) 14 8 N.C. 8 .252 (6.45) 1 .082 (2.1) Dia .265 (6.5) 7 .748 (19.0) .300 (7.62) .167 (4.26) .100 (2.54) .236 (6.0) .137 (3.5)