NTE7011 Integrated Circuit 20W Audio Power Amplifier Circuit Description: The NTE7011 is an integrated circuit in a 12−Lead SIP type package designed for use as a BTL power amplifier with built−in headphone amp for portable stereo applications. Typical applications include portable component stereos, car stereo, radio cassette recorders, and TV sound multiplex output. Features: D Low Quiescent Current, Low Distortion, Low Noise, High Output Power D Wide Supply Voltage range: VCC = 6 to 26V D Built−In Muting Circuit D Built−In Protection Circuits: Temperature, Surge, Overcurrent D Built−In Headphone Amplifier Circuit Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26V Peak Supply Voltage, VCC(surge) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50V Supply Current, ICC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4A Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35.7W Operating Ambient Temperature, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −30°to +75°C Storage Temperature, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55° to +150°C Electrical Characteristics: (VCC = 15V, f = 1kHz, TA = +25°C unless otherwise specified) Parameter Quiescent Circuit Current Symbol Test Conditions Min Typ Max Unit ICQ Vi = 0, RL = 4Ω − 45 75 mA Output Noise Voltage Vno Rg = 10kΩ, f = 15Hz, to 30kHz, 12dB/OCT, RL = 4Ω − 0.6 1.0 mV Voltage Gain GV Vi = 5mV, RL = 4Ω 48.5 50.5 52.5 dB THD Vi = 5mV, RL = 4Ω − 0.15 0.5 % Power Amplifier Total Harmonic Distortion Electrical Characteristics (Cont’d): (VCC = 15V, f = 1kHz, TA = +25°C) Parameter Symbol Maximum Output Power Output Offset Voltage PO Test Conditions THD = 10%, RL = 4Ω VO(offset) Rg = 0Ω Min Typ Max Unit 20 23 − W − − 150 mV − 0.1 1.0 mV Headphone Amp Output Noise Voltage Vno−H Rg = 10Ω, f = 15Hz, to 30kHz, 12dB/OCT, RL = 33Ω Voltage Gain GV−H Vi = 10mV, RL = 33Ω 17.5 19.5 21.5 dB Maximum Output Power PO−H THD = 1%, RL = 33Ω 10 − − mW Block Diagram 7 12 Headphone Amp. Output Circuit Input Circuit Ripple Rejection Muting Circuit Headphone Amp. Output Circuit 10 2 11 Protection Circuit (Temperature, Surge, Over Current) Input Circuit 9 SEPP Output Circuit Driver Circuit SEPP Output Circuit Driver Circuit 8 4 GND (Input) 3 1 VCC 5 6 GND (Output) Pin Connection Diagram 12 Output (Headphone Amp) 11 Ch 1 N.F.B. 10 GND (Input) Front View 9 Input 8 Ch 1 N.F.B. 7 Ripple Filter 6 Ch 1 Bootstrap 5 Ch 1 Output 4 GND (Output) 3 Ch 2 Output 2 Ch 2 Bootstrap 1 VCC 1.181 (30.0) .185 (4.7) .945 (24.0) .591 (15.0) .140 (3.56) .310 (7.87) 1 12 .295 (7.5) Min .100 (2.54) Typ 1.200 (30.5) .106 (2.7)