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| ICs for Audio Common Use AN7171NK, AN7176K Dual BTL 14W Audio Power Amplifier Circuits s Overview The AN7171NK and AN7176K are ICs for power amplification of 14W (13.2V, 4) output. It can provide stereo operation since two BTL amplifiers are incorporated in a chip. It incorporates various protective circuits, thus providing high reliability. The circuits can be turned on or off with supply pins energized, because the stand-by circuit is built-in. o 3.6 5.90.25 7.70.3 7.80.5 6.330.5 16 0.60.2 Unit : mm 29.960.3 28.00.3 20.00.25 0.6 R1.8 temperature, or against over-voltage, short-circuit between output and earth and between output and VCC, load short-circuit) * Small shock noise at power ON/OFF * Fewer external components required * Good oscillation stability 1.20.1 (0.25) 1.450.25 1.80.25 (1.2) 1.450.25 Fin-attached 16-lead ZIP package (EZIP016-P-0660) s Block Diagram NF (Ch.1) 8 VCC Ripple Filter (Ch.1) IN 1 13 6 Input Circuit Stand-by Circuit Input Circuit Driver Circuit Output Circuit NF (Ch.1) 7 Input Circuit Driver Circuit Output Circuit 4 3 2 OUT (Ch.1) (+) GND OUT (Ch.1) (-) STAND-BY 5 Protection Circuit (Ch.2) IN 12 Driver Circuit Output Circuit 16 15 OUT (Ch.2) (+) GND OUT (Ch.2) (-) GND 10 Input Circuit 11 NF (Ch.2) 9 NF (Ch.2) Driver Circuit Output Circuit 14 2.540.8 s Features * Two BTL 14W outputs built-in * Stand-by circuit built-in * Various protective circuits (for 1.778 1 2.80.3 12.50.3 (14.1) 2.66 (4.06) 3.50.3 29.60.3 ICs for Audio Common Use s Pin Descriptions Pin No. 1 2 3 4 5 6 7 8 VCC Output Ch.1 (+) GND (Output Ch.1) Output Ch.1 (-) Stand-by Input Ch.1 Negative Feedback Ch.1 Negative Feedback Ch.1 Pin Name Pin No. 9 10 11 12 13 14 15 16 Pin Name Negative Feedback Ch.2 GND (Input) Negative Feedback Ch.2 Input Ch.2 Ripple Filter Output Ch.2 (-) GND (Output Ch.2) Output Ch.2 (+) AN7171NK, AN7176K s Absolute Maximum Ratings (Ta= 25C) Parameter Supply Voltage Peak Supply Voltage Supply Current Power Dissipation Operating Ambient Temperature Storage Temperature Note 1) Note 2) Note 3) Note 4) When no signals Time = 0.2s Rj - c = 2C/W Ta = 75C Symbol VCC Note 1) VCC (surge) Note 2) ICC PD Note 3) Rating 24 50.0 6.0 37.5 Note 4) Unit V V A W C C Topr Tstg - 30 ~ + 75 - 55 ~ + 150 s Recommended Operating Range (Ta = 25C) Parameter Operating Supply Voltage Range Symbol VCC Range 8.0V ~ 18.0V s Electrical Characteristics (VCC = 13.2V, RL= 4, f = 1kHz, Ta = 25C) Parameter Quiescent Current Output Noise Voltage Note) Voltage Gain Total Harmonic Distortion Max. Output Power (4) Ripple Rejection Ratio Note) Output Offset Voltage Channel Balance Total Harmonic Distortion Total Harmonic Distortion Frequency Characteristics Frequency Characteristics Stand-by Current Crosstalk Symbol ICQ Vno GV THD PO RR VO (offset) CB THD THD fCH fCL ISTB CT Vin= 0mV Vin= 0mV, Rg= 10k Vin= 5mV Vin= 5mV THD= 10% Rg= 0, Vin= 0mV, Ripple= 300mVrms, 120Hz Rg= 0 Vin= 5mV Vin= 5mV, 100Hz Vin= 5mV, 10kHz Vin= 5mV, -3dB down Vin= 5mV, -3dB down Stand-by Pin ON Vin= 5mV, Rg= 10k AN7171NK AN7176K 400 9.0 35 -200 -1 50.5 Condition min. typ. 120 0.60 52.5 0.20 12.5 40 0 0 0.26 0.45 22 21 21 650 61 1000 + 200 +1 max. 200 54.5 0.75 Unit mA dB % W dB mV dB % % kHz Hz A A dB 1.50 mVrms Note) With 15Hz to 30kHz (12dB/OCT) filter AN7171NK, AN7176K PO - VCC 20 f = 1kHz THD = 10% RL = 4 10 Output Power PO (W) Max. Output PO (W) 100 VCC = 13.2V RL = 4 f = 1kHz 10 ICs for Audio Common Use PO, THD - Vin Voltage Gain GV (dB) 100 54 52 50 48 46 GV, THD - f GV 16 Total Harmonics Distortion THD (%) 12 PO 1.0 1.0 8 1.0 VCC = 13.2V 0.8 RL = 4 PO = 1W 0.6 0.4 THD 0.2 0.1 4 THD 0.1 0 4 8 12 16 20 0.01 0.1 1 10 0.01 100 10 100 1k 10k 0 100k Supply Voltage VCC (V) Input Voltage Vin (mV) Frequency f (Hz) GV, THD - VCC 10 f = 1kHz RL = 4 Vin = 3mV 52 Voltage Gain GV (dB) 50 48 46 44 42 40 38 THD 36 3 4 5 6 7 8 9 10 9 Total Harmonics Distortion THD (%) GV 8 7 6 5 4 3 2 1 0 11 0 4 8 160 Quiescent Current ICQ (mA) 200 ICQ - VCC 120 80 40 12 16 20 Supply Voltage VCC (V) Supply Voltage VCC (V) s Precautions on use 1. Always attach an outside heat sink to use the chip. In addition, the outside heat sink must be fastened onto a chassis for use. 2. Connect the radiation fin to the GND potential. 3. Prevent atmospheric and ground faults, and load short-circuit. 4. The temperature protective circuit gets actuated when Tj = approx. 150C, but it is automatically reset when the chip temperature drops below the above set level. 5. The overvoltage protective circuit starts the protective operation at VCC26V. 6. The ground fault protective circuit starts the protective operation at 0.3 or less of contact resistance. 7. The load short-circuit protective circuit starts the protective operation at 0.3 or less of contact resistance. 8. The atmospheric fault protective circuit protects the chip only from short-circuit between pins. 9. Take into consideration the heat radiation design particularly when VCC is set high or when the load is 2. Total Harmonics Distortion THD (%) ICs for Audio Common Use s Application Circuit + ICs for Audio Common Use VCC =13.2V 2000F VCC Pin IN Ch.1 - + - 1 6 2 + - 1F 100F 0.047F 200 GND (Input side) IN Ch.2 - + 8 GND 3 4 0.1 F 2.2 7 OUT Ch.1 4 0.1F 2.2 Ripple Filter Pin 200F 10 AN7171NK 13 AN7176K + - 12 16 + - 1F 9 GND 100F 0.047F 200 15 14 0.1 F 2.2 11 OUT Ch.2 4 0.1F 2.2 5 (STAND-BY) +5V (Stand-by mode) AN7171NK : AN7176K : 0V +5V 0V (Stand-by mode) s Printed Circuit Board Layout AN7171NK, AN7176K 2.2 0.1F OUT 2-1 100F 100F -+ 2.2 0.1F 1F 200F 0.047F 0.047F 1F OUT 1-1 + GND 2000F +- - OUT 2-2 + - 200 200 0.1F 2.2 0.1F IN 2 IN 1 MUTE OUT 1-2 2.2 |
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