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| ICs for Audio Common Use AN7149N Dual 5.3W Audio Power Amplifier Circuit s Overview The AN7149N is an integrated circuit designed for power amplifier of 5.3W (12.0V, 3) output. Stereo operation is enabled due to incorporating two amps. on one chip. It makes high reliability by smaller quiescent current compared with power amp. current and protectors built in. As quiescent circuit current is very few, it is most suitably used for battery operated set such as radio cassette recorder. Furthermore, low distortion and low noise are realized and external components are very few. 12-pin SIL package enabled compact and high-densely mounted set. 5.90.25 7.70.3 7.80.25 o 3.6 12 Unit : mm 29.960.3 28.00.3 20.00.2 0.60.1 R1.8 0.6 1 s Features * Low quiescent current * High operation stability * Low radiation * Low distortion * Low noise * Low shock noise from power ON/OFF operation * Fewer external components s Pin Descriptions Pin No. 1 2 3 4 5 6 Pin Name N.F.B Ch.1 Input Ch.1 Ripple Filter GND (Input) Input Ch.2 N.F.B Ch.2 + 0.1 0.35 - 0.05 2.54 12-Lead SIP Package with Fin (HSIP012-P-0000A) 1.20.1 Pin No. 7 8 9 10 11 12 Pin Name Output Ch.2 Bootstrap Ch.2 GND (Output) VCC Bootstrap Ch.1 Output Ch.1 s Block Diagram 1 Input Circuit Driver Circuit 11 Output Circuit Over Current Over Temperature Protection Input Circuit 6 4 GND (Input) Driver Circuit 9 Output Circuit 8 GND (Output) 2 12 3 10 VCC 5 7 3.50.3 29.60.3 AN7149N s Absolute Maximum Ratings (Ta= 25C) Parameter Supply Voltage Supply Current Power Dissipation Operating Ambient Temperature Storage Temperature Symbol VCC ICC PD Topr Tstg ICs for Audio Common Use Rating 24 4 41.7 - 30 ~ + 75 - 55 ~ + 150 Unit V A W C C s Electrical Characteristics (VCC = 12V, RC = 3, f = 1kHz, Ta = 25C) Parameter Quiescent Circuit Current Voltage Gain Total Harmonic Distortion Symbol ICQ GV THD Vi = 0mV PO = 1.0W PO = 1.0W, f = 1kHz THD = 10%, RL = 3 Maximum Output Power PO THD = 10%, RL = 4 THD = 10%, VCC = 9V, RL = 3 Rg = 10k, f = 15Hz ~ 30kHz, 12dB/OCT PO = 0.5W PO = 0.5W 40 4.7 47.5 Condition min. typ. 13 49.5 0.2 5.3 4.3 2.9 0.5 0 45 1.0 1.0 mV dB dB W max. 19 51.5 0.5 Unit mA dB % Output Noise Voltage Channel Balance Ripple Rejection Ratio Vno CB RR PD - Ta 50 (1) Tc = Ta (j- c = 3C/W) (2) With a 100cm2 x 3mm Al heat sink (black color coated) or a 200cm2 x 2mm Al heat sink (not lacquered) (3) With a 100cm2 x 2mm Al heat sink (not lacquered) (4) Without heat sink 40 Power Dissipation PD (W) (1) 30 20 (2) 10 (3) (4) 0 0 40 80 120 160 Ambient Temperature Ta (C) ICs for Audio Common Use AN7149N PO - VCC 16 14 12 RL = 3 10 RL = 4 8 RL = 6 6 4 50 Voltage Gain GV (dB) THD = 10% f = 1kHz RL = 2 Maximum Output PO (W) 49 48 GV, THD - f PO, THD - Vin VCC = 12V RL = 3 10 10 Total Harmonic Distortion THD (%) GV 47 46 45 44 Total Harmonic Distortion THD (%) Output Power PO (W) VCC = 12V RL = 3 Vin = 3mV 1.0 0.8 0.6 0.4 f = 10kHz 1 f = 1kHz f = 100Hz THD 1 0.1 PO f = 1kHz 0.1 2 0 THD 0.2 10k 100k 0 4 8 12 16 20 10 100 1k 0.01 0.1 1 10 100 Supply Voltage VCC (V) Frequency f (Hz) Input Voltage Vin (mV) Vno - Rg VCC = 12V RL = 3 s Application Circuit VCC - + 1000F 3 10 11 + - 1000F 0.1F + Output Noise Voltage Vno (mV) 1.0 1 0.8 0.6 0.4 DIN/AUDIO 0.2 0 10 Input Ch.2 6 5 FLAT 100F + - 2.2 1000F + - 47F - 2 12 Input Ch.1 AN7149N 7 47F - + + - 1000F 0.1F 100 1k 10k 100k 100F + - 8 4 9 Input Resistance Rg () 2.2 Printed Circuit Board Layout AN7149N Output2 - + Input2 1000F - + 1000F Output1 0.1 0.1F GND - + Input1 1 + - 100F - + 100F F 100F 2.2 2.2 +- 47F 12 + - 1000F VCC -+ 47F GND |
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