ICs for Audio Common Use AN7168 Dual 5.8W Audio Power Amplifier Circuit ■ Overview Unit : mm The AN7168 is an integrated circuit designed for low distortion, low noise and low power dissipation audio set of 5.8W (13.2V, 4Ω) output. Stereo operation is enabled due to incorporating two amplifiers on one chip. 12-pin SIL package enabled compact and high integrated set. Thermal protection, short protection and excessive protection circuits are built in. 5.9±0.25 7.7±0.3 7.8±0.25 ø 3.6 29.6±0.3 2.54 0.6 R1.8 ■ Features • Highly stable operation • Low distortion • Low quiescent current • Low noise • Low shock noise from power ON/OFF operation • Built-in muting circuit • Fewer external components • Incorporating protection circuits 0.6±0.1 29.96±0.3 28.0±0.3 20.0±0.2 12 1 + 0.1 1.2±0.1 3.5±0.3 0.35 – 0.05 12-Lead SIP Package with Fin (HSIP012-P-0000A) ■ Pin Descriptions Pin No. Pin Name Pin No. Pin Name 1 NFB Ch.1 7 Output Ch.2 2 Input Ch.1 8 Bootstrap Ch.2 3 Ripple Filter 9 GND (Output) 4 GND (Input) 10 VCC 5 Input Ch.2 11 Bootstrap Ch.1 6 NFB Ch.2 12 Output Ch.1 ■ Block Diagram 1 11 Input Circuit 2 Driver Circuit Output Circuit 12 Over Voltage Over Current Over Temperature Protection 3 Input Circuit 5 6 Driver Circuit 10 VCC Output Circuit 4 9 GND (Input) GND (Output) 7 8 ICs for Audio Common Use AN7168 ■ Absolute Maximum Ratings (Ta= 25˚C) Parameter Symbol Rating Unit Supply Voltage VCC 24 V Supply Current ICC 4 A Power Dissipation Note 1) PD 41.7 W Peak Supply Voltage Note 2) VCC (surge) 50 V Operating Ambient Temperature Topr – 30 ~ + 75 ˚C Storage Temperature Tstg – 55 ~ + 150 ˚C Note 1) R θ j – c = 3˚C/W Note 2) Voltage applied time = 0.2s ■ Electrical Characteristics (VCC = 13.2V, f = 1kHz, RL= 4Ω, Ta= 25˚C) Parameter Symbol Condition min. Quiescent Circuit Current ICQ Vi= 0mV 30 Voltage Gain GV PO= 0.5W 52 THD Total Harmonic Distortion Output Noise Voltage PO= 0.5W, f= 100Hz 0.1 PO= 0.5W, f= 10kHz 0.2 THD = 10%, RL= 2Ω 8.9 3.1 Vno Rg= 10kΩ, 1000pF, Without Filter 1.1 PO= 0.5W CS Ripple Rejection Ratio RR PO= 0.5W PO= 0.5W, Rg = 10kΩ, Vripple= 280mVrms, fripple= 12Hz Sine wave PD – Ta (1) Tc= Ta (θj – c= 3˚C/W) (2) With a 100cm2 × 3mm Al heat sink (black color coated) or a 200cm2 × 2mm Al heat sink (not lacquered) (3) With a 100cm2 × 2mm Al heat sink (not lacquered) (4) Without heat sink Power Dissipation PD (W) 30 20 (2) (3) 10 (4) 0 0 40 80 120 Ambient Temperature Ta (˚C) 160 200 W 1.5 1 mV dB 40 50 dB 35 45 dB 0 Vi= 0mV 50 (1) 0.8 0 CB % 5.7 THD = 10%, RL= 8Ω Rg= 10kΩ, 1000pF f = 15Hz ~ 30kHz, 12dB/OCT Channel Separation 40 dB 56 0.5 PO VO (offset) mA 54 5 Unit 100 0.1 Channel Balance Offset Voltage max. 55 PO= 0.5W, f= 1kHz THD = 10% Maximum Output typ. 200 mV ICs for Audio Common Use AN7168 ■ Application Circuit 100µF 3 + 1000µF – + 100µF VCC + – 10 0.047µF 11 1 2.2Ω + – 47µF 2 – 1000µF 12 Input Ch.1 + – + – AN7168 5 7 Input Ch.2 47µF – 1000µF + 8 6 + 100µF 4 0.047µF 9 – 2.2Ω