NTE1637 Integrated Circuit Dual AF Power Ampilifier, 4.3W Features: D Built−in 2 Channels Enabling use in Stereo and Bridge Amplifier Applications. D Low Switching Distortion at High Frequencies D Minimum Number of External Parts Required: 9 Pcs. Min. (Stereo/Bridge) D Small Shock Noise at the Time of Power Supply ON/OFF due to Built−In Muting Circuit D Good Ripple Rejection due to Built−In Ripple Filter D Voltage Gain Fixed at 45dB (Bridge: 51dB). VariableVoltage Gain Available with External Resistor Added. D Easy to Mount on Board and also easy to Design Radiator fin due to use of 14−Pin SIP Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V Power Dissipation (Note 1), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10W Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +75°C Storage Temperatuere Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55° to +150°C Note 1. Using 100 x 100 x 1.5mm3 Al fin. Recommended Operating Conditions: (TA = +25°C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V Load Resistance, RL Stereo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Ω to 8Ω Bridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Ω Electrical Characteristics: (TA = +25°C, VCC = 12V, f = 1kHz, RL = 4Ω Stereo 8Ω Bridge) Parameter Queiscent Current Voltage Gain Stereo Bridge Symbol Test Conditions ICCO VG Closed Loop Min Typ Max Unit − 45 60 mA 43 45 47 dB 49 51 53 dB Electrical Characteristics (Cont’d): (TA = +25°C, VCC = 12V, f = 1kHz, RL = 4Ω Stereo 8Ω Bridge) Parameter Min Typ Max Unit − − ±1 dB 3.6 4.2 − W Stereo 8Ω − 2.5 − W Bridge 8Ω − 9.0 − W − 0.3 1.5 % − 0.5 − % 21 30 − kΩ Rg = 0, Stereo − 0.3 1.0 mV Rg = 10kΩ, Stereo − 0.5 2.0 mV Rg = 0, Vr = 150mV, Stereo 40 46 − dB Rg = 10kΩ, VO = 0dB, Stereo 40 55 − dB Voltage Gain Difference Output Power Stereo 4Ω Total Harmonic Distortion Stereo Symbol ∆VG PO THD Test Conditions Stereo THD = 10% PO = 250mW Bridge Input Resistance Output Noise Voltage Ripple Rejection Channel Separation ri VNO Rr Sep Pin Connection Diagram (Front View) 14 NF 1 13 Input 1 12 Preamp GND 11 DC 10 Input 2 9 NF 2 8 Power Amp GND 2 7 Output 2 6 Bootstrap 2 5 BTL Output 4 VCC 3 Output 1 2 Bootstrap 1 1 Power Amp GND 1 1.456 (37.0) 1.181 (30.0) .177 (4.5) .156 (3.95) R .527 (13.38) 1 14 .100 (2.54) .815 (20.7) .015 (0.38)