NTE1626 Integrated Circuit 4.2W Dual Audio Power Amplifier Description: The NTE1626 is a dual audio power amplifier in a 12−Lead SIP type package designed for use in a stereo radio cassette. This device has two audio power amplifiers and each of the two provides 4.2W power at 12V/4Ω. Features: D High Output Power: 4.2W/ch (Typ) VCC = 12V, RL = 4Ω 5.0W/ch (Typ) VCC = 12V, RL = 3Ω 2.2W/ch (Typ) VCC = 9V, RL = 4Ω 3.0W/ch (Typ) VCC = 9V, RL = 3Ω D Wide Operating Voltage Range: VCC = 5 to 16V D No Shock Noise at Power Supply Switch On & Off D Soft Clipping Wave Form D High Ripple Rejection Ratio: R.R.R. = 50dB (Typ) D Thermal Shutdown Circuit is Built In Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage (No Signal), VCC1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20V Supply Voltage (Operating), VCC2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16V Allowable Power Dissipation (Note 1), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13W Operating Temperature Range, Topt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +75°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40° to +150°C Note 1 100 x 100 x 2mm3 Al heat sink Recommended Operating Conditions: (TA = +25°C unless otherwise specified) Parameter Supply Voltage Load Impedance Symbol Test Conditions Min Typ Max Unit VCC 5 12 16 V RL 3 4 8 Ω Electrical Characteristics: (VCC = 12V, RL = 4Ω, f = 1kHz, TA = +25°C, 100 x 100 x 2mm Al Panel Heat Sink unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Circuit Current ICC No Signal 20 45 90 mA Voltage Gain AV PO = 1W 42 45 48 dB Electrical Characteristics (Cont’d): (VCC = 12V, RL = 4Ω, f = 1kHz, TA = +25°C, 100 x 100 x 2mm Al Panel Heat Sink unless otherwise specified) Parameter Symbol Output Power PO Total Harmonic Distortion THD Test Conditions Min Typ Max Unit THD = 10% VCC = 9V, RL = 4Ω 1.8 2.2 − W THD = 10% VCC = 9V, RL = 3Ω 2.5 3 − W THD = 10% VCC = 12V, RL = 4Ω 3.2 4.2 − W THD = 10% VCC = 12V, RL = 3Ω 4 5 − W PO = 1W − 0.2 1 % Output Noise Voltage NL RG = 10kΩ − 0.6 2 mVrms Cross Talk CT PO = 1W, oth. ch. RG = 10kΩ 45 55 − dB Ripple Rejection RR RG = 0, f = 100Hz, V = 0.3Vrms 40 50 − dB Input Impedance Zin 30 50 − kΩ Pin Connection Diagram (Front View) 12 GND (Output) 11 Output 2 10 9 8 7 6 5 4 3 2 1 VCC Bootstrap 2 NFB 2 Input 2 Input 1 NFB 1 Filter Bootstrap 1 Output 1 GND (Input) 1.260 (32.0) Max .197 (5.0) Max .945 (24.0) .070 (1.78) R Typ .590 (14.9) 1 12 .256 (6.5) .100 (2.54) .099 (2.5) .512 (13.0)