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ICs for Audio Common Use AN7522 Dual 3-W BTL audio power amplifier I Overview AN7522 is an audio power amplifier IC for the stereo system. In the BTL (balanced transformerless) method, fewer external parts and easier design for applications are required. 7.7 0.3 12 29.75 0.30 28.0 0.3 20.0 0.3 (10.0) (10.0) (1.27) Unit: mm (1.3) 3.6 (1.2) 19.1 0.3 21.9 0.3 HSIP012-P-0000A I Block Diagram 10 GND 11 (Ch.2 output) VCC 1 Ch.1 output 2 GND 3 (Ch.1 output) Ch.1 input Ch.2 input Volume Ch.2 output Ch.1 output Ch.2 output Standby GND 12 4 5 6 7 8 9 1.80 0.15 * Televisions, audio equipment, personal computers, and active speakers 1.2 0.1 3.5 0.3 I Applications (12.5) 1 0.10 0.25 + 0.05 2.54 - 1.45 0.15 * 3-W output (8 ) with supply voltage of 8 V * On-chip standby function * On-chip volume function R1.8 0.6 0.15 0.6 + 0.05 - (1.27) I Features 29.6 0.3 1 AN7522 I Pin Descriptions Pin No. 1 2 3 4 5 6 Descriptions Supply voltage Ch.1 + output Ground (output ch.1) Ch.1 - output Standby (standby state if this pin is open.) Ch.1 input Pin No. 7 8 9 10 11 12 ICs for Audio Common Use Descriptions Ground (input) Ch.2 input Volume (max. volume if this pin is open.) Ch.2 - output Ground (output ch.2) Ch.2 + output I Absolute Maximum Ratings Parameter Supply voltage Supply current Power dissipation *3 *1 *2 Symbol VCC ICC PD Topr Tstg Rating 14 2.0 1.92 -25 to +70 -55 to +150 Unit V A W C C Operating ambient temperature Storage temperature *1 Note) *1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25C. *2: At no signal. *3: The power dissipation shown is the value for Ta = 70C. I Recommended Operating Range Parameter Supply voltage Symbol VCC Range 3.5 to 13.5 Unit V I Electrical Characteristics at VCC = 8.0 V, RL = 8 , f = 1 kHz, Ta = 25C 2C Parameter Quiescent circuit current Standby current Output noise voltage * Voltage gain Total harmonic distortion Maximum output power Ripple rejection ratio * Output offset voltage Volume attenuation rate * Channel balance 1 Channel balance 2 Intermediate voltage gain Channel crosstalk Symbol ICQ ISTB VNO GV THD PO1 RR VOFF Att CB1 CB2 GVM CT Conditions VIN = 0 mV, Vol. = 0 V VIN = 0 mV, Vol. = 0 V Rg = 10 k, Vol. = 0 V PO = 0.5 W, Vol. = 1.25 V PO = 0.5 W, Vol. = 1.25 V THD = 10%, Vol. = 1.25 V Rg = 10 k, Vol. = 0 V, VR = 1 V[rms], fR = 120 Hz Rg = 10 k, Vol. = 0 V PO = 0.5 W, Vol. = 0 V PO = 0.5 W, Vol. = 1.25 V PO = 0.5 W, Vol. = 0.6 V PO = 0.5 W, Vol. = 0.6 V PO = 0.5 W, Vol. = 1.25 V Min 31 2.4 30 -250 70 -1 -3 20.5 40 Typ 45 1 0.10 33 0.10 3.0 50 0 85 0 0 23.5 55 Max 100 10 0.4 35 0.5 250 1 3 26.5 Unit mA A mV[rms] dB % W dB mV dB dB dB dB dB Note) *: In measuring, the filter for the range of 15 Hz to 30 kHz (12 dB/OCT) is used. 2 ICs for Audio Common Use I Terminal Equivalent Circuits Pin No. 1 2 Pin name VCC Ch.1 + output pin Equivalent circuit VCC AN7522 Voltage 5.0 V 2.15 V 200 1/2 VCC 800 50 2 20 k 3 GND 3 0V 4 Ch.1 - output pin VCC 2.15 V 200 1/2 VCC 800 50 4 20 k 5 Standby pin VCC 30 k To the shock sound prevention circuit 5V 5 10 k 200 2 k 50 k 33 k 5 k VRF ( VCC) 12 k 1/2 VCC 10 k To the constant current circuit 3 AN7522 I Terminal Equivalent Circuits (continued) Pin No. 6 Pin name Ch.1 input pin VCC 50 A 50 A 30 k Equivalent circuit ICs for Audio Common Use Voltage VREF1 (1.4 V) 100 A 0 mV to 10 mV 1 k 6 1 k 1 k 500 7 GND 7 0V 8 Ch.2 input pin VCC 50 A 50 A 30 k VREF1 (1.4 V) 100 A 0 mV to 10 mV 1 k 8 1 k 1 k 500 9 Volume pin VCC 50 A 1 k 9 12 k 4 ICs for Audio Common Use I Terminal Equivalent Circuits (continued) Pin No. 10 Pin name Ch.2 - output pin Equivalent circuit VCC AN7522 Voltage 2.15 V 200 1/2 VCC 800 50 10 20 k 11 GND 11 0V 12 Ch.2 + output pin VCC 2.15 V 200 1/2 VCC 800 50 12 20 k I Usage Notes * Please avoid the short-circuits to VCC , ground, or load short-circuit. * Please connect the cooling fin with the GND potential. * The thermal shutdown circuit operates at about Tj = 150C. However, the thermal shutdown circuit is reset automatically if the temperature drops. * Please carefully design the heat radiation especially when you take out high power at high VCC . * Please connect only the ground of signal with the signal GND of the amplifier in the previous stage. 5 AN7522 I Technical Data * PD Ta curves of HSIP012-P-0000A 13 12 11 10 5C/W heat sink Independent IC without a heat sink Rthj-a = 41.7C/W ICs for Audio Common Use PD T a Power dissipation PD (mW) 9 8 7 10C/W heat sink 6 5 4 20C/W heat sink 3 2 1 0 0 25 50 70 75 100 125 150 * Main characteristics PO VCC 8 7 6 f = 1 kHz THD = 10% RL = 8 , 16 400 Hz HPF 30 kHz LPF Both ch. input Rg = 10 k VSTB = 5 V Vol. = 1.25 V Ambient temperature Ta (C) ICQ , ISTB VCC 70 60 8.0 50 ICQ 40 7.0 6.0 5.0 30 20 4.0 RL = 8 Both ch. input 3.0 Rg = 10 k VSTB = 0 V/5 V 2.0 Vol. = 0 V ISTB 1.0 6 8 10 12 14 0.0 10.0 9.0 Quiescent circuit current ICQ (mA) 5 4 3 Ch.2 (8 ) 2 1 0 0 2 4 6 8 10 12 14 Ch.1 (8 ) Ch.1, Ch.2 (16 ) 10 0 0 2 4 Supply voltage VCC (V) Supply voltage VCC (V) PO , THD VIN 10 VCC = 8 V f = 1 kHz RL = 8 400 Hz HPF 30 kHz LPF Both ch. input Rg = 10 k VSTB = 5 V Vol. = 1.25 V 100 PC , ICC PO 3.5 3.0 PC (8 ) 1.8 1.6 1.4 2.5 ICC (8 ) 2.0 PC (16 ) 1.2 1.0 0.8 VCC = 8 V f = 1 kHz RL = 8 , 16 400 Hz HPF 30 kHz LPF Both ch. input Rg = 10 k VSTB = 5 V Vol. = 1.25 V 0.6 0.4 0.2 0.0 5.0 Total harmonic distortion THD (%) THD (ch.1, 100 kHz) 0.1 THD (ch.2, 100 kHz) 1 THD (ch.2, 10 kHz) THD (ch.1, 10 kHz) 1.5 1.0 ICC (16 ) 0.5 0.0 0.0 0.01 PO (ch.1) 0.1 THD (ch.2, 1 kHz) THD (ch.1, 1 kHz) PO (ch.2) 0.001 1 10 100 0.01 1 000 1.0 2.0 3.0 4.0 Input voltage VIN (mV[rms]) Output power (1-ch) PO (W) 6 Supply current ICC (A) 1 Output power PO (W) 10 Power consumption PC (W) Standby current ISTB (A) Output power PO (W) ICs for Audio Common Use I Technical Data (continued) * Main characteristics (continued) GV , PO f 35 34 33 GV (ch.1) GV (ch.2) 32 31 30 29 28 27 26 25 10 100 1 000 10 000 GV(ch.1) 1.4 1.2 1.0 0.8 Both ch. input Rg = 10 k 0.6 VSTB = 5 V Vol. = 1.25 V 0.4 0.2 0.0 100 000 2.0 1.8 1.6 AN7522 THD f 10 VCC = 8 V PO = 0.5 W RL = 8 400 Hz HPF 30 kHz LPF 1 Both ch. input Rg = 10 k VSTB = 5 V Vol. = 1.25 V GV(ch.2) VCC = 8 V f = 1 kHz RL = 8 400 Hz HPF 30 kHz LPF Total harmonic distortion THD (%) Voltage gain GV (dB) Output power PO (W) Ch.2 0.1 Ch.1 0.01 10 100 1 000 10 000 100 000 Frequency f (Hz) Frequency f (Hz) GV , THD VCC 35 34 33 GV (ch.1) GV (ch.2) 32 31 30 29 28 27 26 25 0 2 THD (ch.2) 4 6 8 10 12 14 THD (ch.1) PO = 0.5 W f = 1 kHz RL = 8 400 Hz HPF 30 kHz LPF Both ch. input Rg = 10 k VSTB = 5 V Vol. = 1.25 V 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 1.0 0.9 80 RR VCC Ch.1, Ch.2 Ripple rejection ratio RR (dB) 0.8 Total harmonic distortion THD (%) 70 60 50 40 Ch.2 (vol.-max.) 30 20 10 0 Ch.1 (vol.-max.) Voltage gain GV (dB) Vol. = 0 V/1.25 V RL = 8 30 kHz LPF VRIPPLE = 0.5 V[rms] Rg = 10k fRIPPLE = 120 Hz VSTB = 5 V 0 2 4 6 8 10 12 14 Supply voltage VCC (V) Spply voltage VCC (V) RR VRIPPLE 80 Ch.1, Ch.2 70 70 80 RR fRIPPLE Ch.1 Ripple rejection ratio RR (dB) Ripple rejection ratio RR (dB) 60 50 40 30 VCC = 8 V RL = 8 30 kHz LPF Rg = 10 k Ch.2 (vol.-max.) VSTB = 5 V Vol. = 0 V/1.25 V VRIPPLE = 0.5 V[rms] fRIPPLE = 120 Hz 60 50 40 Ch.2 Ch.2 (vol.-max.) 30 Ch.1 (vol.-max.) 20 10 0 VCC = 8 V VSTB = 5 V RL = 8 Vol. = 0 V/1.25 V Rg = 10 k VRIPPLE = 0.5 V[rms] 10 100 1 000 10 000 Ch.1 (vol.-max.) 20 10 0 10 100 1 000 10 000 Power supply ripple voltage VRIPPLE (mV[rms]) Power supply ripple frequency fRIPPLE (Hz) 7 AN7522 I Technical Data (continued) * Main characteristics (continued) RR Vol. 80 70 VSTB = 5 V VCC = 8 V RL = 8 VRIPPLE = 0.5 V[rms] 30 kHz LPF fRIPPLE = 120 Hz Rg = 10 k 90 80 70 ICs for Audio Common Use CT VCC Ripple rejection ratio RR (dB) Ch.1 Ch.2 60 Crosstalk CT (dB) 50 Ch.2 60 50 40 30 20 10 40 Ch.1 30 20 10 0 PO = 0.5 W f = 1 kHz RL = 8 400 Hz HPF 30 kHz LPF Rg = 10 k VSTB = 5 V Vol. = 1.25 V 0 2 4 6 8 10 12 14 0.0 0.5 1.0 1.5 0 Volume voltage Vol. (V) Supply voltage VCC (V) CT VIN 90 80 70 Ch.1 CT f 90 80 70 Ch.1 Crosstalk CT (dB) 60 50 40 30 20 10 0 VCC = 8 V f = 1 kHz RL = 8 400 Hz HPF 30 kHz LPF Rg = 10 k VSTB = 5 V Vol. = 1.25 V 10 100 1 000 Crosstalk CT (dB) Ch.2 60 50 40 30 20 10 0 Ch.2 VCC = 8 V PO = 0.5 W RL = 8 Rg = 10 k VSTB = 5 V Vol. = 1.25 V 10 100 1 000 10 000 100 000 Input voltage VIN (mV[rms]) Frequency f (Hz) VNO VCC 800 RL = 8 Rg = 10 k Din audio filter VSTB = 5 V Vol. = 0 V/1.25 V 800 VNO Rg VCC = 8 V RL = 8 Din audio filter VSTB = 5 V Vol. = 0 V/1.25 V Output noise voltage VNO (V[rms]) 600 500 400 Ch.2 (vol.-max.) 300 Ch.1 (vol.-max.) 200 Ch.1, Ch.2 100 0 Output noise voltage VNO (V[rms]) 700 700 600 500 400 300 200 100 0 Ch.1 (FLAT), Ch.2 (FLAT) Ch.1 (vol.-max.) Ch.2 (vol.-max.) Ch.1 (FLAT) Ch.2 (FLAT) Ch.1, Ch.2 0 2 4 6 8 10 12 14 10 100 1 000 10 000 100 000 Supply voltage VCC (V) Input impedance Rg () 8 ICs for Audio Common Use I Technical Data (continued) * Main characteristics (continued) VNO Vol. 1 200 0.10 0.09 Ch.2 (FLAT) Ch.1 (FLAT) 800 VCC = 8 V RL = 8 Rg = 10 k Din audio filter VSTB = 5 V AN7522 ICQ VSTB VCC = 8 V RL = 8 Rg = 10 k Vol. = 0 V Output noise voltage VNO (V[rms]) Quiescent circuit current ICQ (A) 1 000 0.08 0.07 0.06 ICQ 0.05 0.04 0.03 0.02 0.01 600 400 200 Ch.1, Ch.2 0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 0.00 0 1 2 3 4 5 Volume voltage Vol. (V) Standby voltage VSTB (V) Att VCC 100 100 Att VIN 90 90 Volume attenuation Att (dB) Volume attenuation Att (dB) Ch.1 80 Ch.2 70 VCC = 8 V f = 1 kHz RL = 8 400 Hz HPF 30 kHz LPF Rg = 10 k VSTB = 5 V Vol. = 0 V 1 10 100 1 000 80 Ch.1, Ch.2 70 PO = 0.5 W f = 1 kHz RL = 8 400 Hz HPF 30 kHz LPF Rg = 10 k VSTB = 5 V Vol. = 0 V 0 2 4 6 8 10 12 14 60 60 50 50 40 40 Supply voltage VCC (V) Input voltage VIN (mV[rms]) Att f 100 95 0 10 Att Vol. Volume attenuation Att (dB) Volume attenuation Att (dB) 90 85 Ch.1, Ch.2 80 75 70 65 60 55 50 10 100 1 000 VCC = 8 V PO = 0.5 W RL = 8 Rg = 10 k VSTB = 5 V Vol. = 0 V 20 Ch.1, Ch.2 30 40 50 60 70 80 90 VCC = 8 V PO = 0.5 W f = 1 kHz RL = 8 400 Hz HPF 30 kHz LPF Rg = 10 k VSTB = 5 V 10 000 100 000 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 Frequency f (Hz) Volume voltage Vol. (V) 9 AN7522 I Technical Data (continued) * Main characteristics (continued) THD Vol. 10 VCC = 8 V PO = 0.5 W f = 1 kHz RL = 8 1 400 Hz HPF 30 kHz LPF Rg = 10 k VSTB = 5 V 100 ICs for Audio Common Use GV VIN Total harmonic distortion THD (%) Voltage gain GV (dB) Ch.1, Ch.2 Ch.1, Ch.2 10 0.1 VCC = 8 V f = 1 kHz RL = 8 400 Hz HPF 30 kHz LPF Both ch. input Rg = 10 k VSTB = 5 V Vol. = 1.25 V 0.01 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1 1 10 100 1 000 10 000 Volume voltage Vol. (V) Input voltage VIN (mV[rms]) * Example of PCB pattern GND VCC Ch.1 out+ Ch.1 out- Ch.2 out+ Ch.2 out- GND (input) VIN (ch.2) Mute/Volume VIN (ch.1) Standby 1 2 3 4 5 6 7 8 9 10 11 12 I Application Circuit Example 10 11 1.0 F 1.0 F 270 k 68 k 10 k 470 F 10 F VCC Standby VIN1 VIN2 10 k 8 Out 1 8 Out 2 Volume 10 12 1 2 3 4 5 6 7 8 9 |
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