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ICs for Audio Common Use
AN7512
Dual 1-W BTL audio power amplifier
I Overview
The AN7512 is an audio power amplifier IC for stereo system. The BTL (Balanced Transformer-Less) method can provide fewer external parts and more easy design for applications.
27.40.3
6.350.3 4.70.25
1.060.25
Unit: mm
3.05 0.25
I Features
* 1-W output (8 ) with supply voltage of 5 V * On-chip standby function * On-chip volume function
1.7
I Applications
* Televisions, audio equipment, personal computers, and active speakers
0 to 6 7.620.25
3.800.3
2.1
1.50.1
17
0.50.1
0.45 +0.1 -0.05
HDIP016-P-0300
I Block Diagram
N.C. N.C. N.C. N.C.
VCC 12 Attenuator Ch.1 output 13
Ripple rejection circuit Attenuator
16
1
7
9
2 Standby
11 Thermal shutdown 28 dB 28 dB Attenuator control 28 dB 3 4 5 GND Ch.1 input Volume Ch.2 input 6 28 dB 8
Ch.2 output
Ch.1 output
15
Ch.2 output
GND 14 (ch.1 output)
10 GND (ch.2 output)
5.080.1 2.542.54
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
0.50.1
21.60.3
1.20.25
1
AN7512
I Pin Descriptions
Pin No. 1 2 3 4 5 6 7 8 N.C. Standby (standby state if this pin is open.) Ch.1 input Ground (input) Volume (muting off if this pin is open.) Ch.2 input N.C. Ch.2 - output Description Pin No. 9 10 11 12 13 14 15 16
ICs for Audio Common Use
Description N.C. Ground (output ch.2) Ch.2 + output Supply voltage Ch.1 + output Ground (output ch.1) Ch.1 - output N.C.
Note) Please do not apply voltage or current to the N.C. pin from outside.
I Absolute Maximum Ratings
Parameter Supply voltage Supply current Power dissipation
*3 *1 *2
Symbol VCC ICC PD Topr Tstg
Rating 14 2.0 1 127 -25 to +70 -55 to +150
Unit V A mW 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
2
ICs for Audio Common Use
I Electrical Characteristics at VCC = 5.0 V, RL = 8 , f = 1 kHz, Ta = 25C 2C
Parameter Quiescent circuit current Standby current Output noise voltage Voltage gain Total harmonics distortion Maximum output power Ripple rejection ratio Output offset voltage Volume attenuation rate Channel balance 1 Channel balance 2 Intermediate voltage gain Channel crosstalk
* * *
AN7512
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 = 0.25 W, Vol. = 1.25 V PO = 0.25 W, Vol. = 1.25 V THD = 10 %, Vol. = 1.25 V Rg = 10 k, Vol. = 0 V, VR = 0.5 V[rms], fR = 120 Hz Rg = 10 k, Vol. = 0 V PO = 0.25 W, Vol. = 0 V PO = 0.25 W, Vol. = 1.25 V PO = 0.25 W, Vol. = 0.6 V PO = 0.25 W, Vol. = 0.6 V PO = 0.25 W, Vol. = 1.25 V
Min 31 0.7 30 -250 70 -1 -3 20.5 40
Typ 35 1 0.10 33 0.10 1.0 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.
I Terminal Equivalent Circuits
Pin No. 1 2 Pin name N.C. Standby pin VCC 30 k To the shock sound prevention circuit VRF ( VCC) Equivalent circuit Open Voltage 5V
2
10 k 200 2 k 50 k 33 k 5 k
12 k
1/2 VCC 10 k To the constant current circuit
3
AN7512
I Terminal Equivalent Circuits (continued)
Pin No. 3 Pin name Ch.1 input pin Equivalent circuit
ICs for Audio Common Use
Voltage
VREF1 (1.4 V) VCC 50 A 50 A 30 k 100 A
1.4 V
1 k 3
1 k
1 k
500
4
GND
0V
4
VCC 50 A
5
Volume pin
1 k 5 12 k
6
Ch.2 input pin
1.4 V
VREF1 (1.4 V) VCC 50 A 50 A 30 k 100 A
1 k 6
1 k
1 k
500
7
N.C.
Open
4
ICs for Audio Common Use
I Terminal Equivalent Circuits (continued)
Pin No. 8 Pin name Ch.2 - output pin Equivalent circuit VCC
AN7512
Voltage 2.15 V
200 1/2 VCC 800
50
8
20 k
9 10
N.C. GND
10
Open
0V
11
Ch.2 + output pin
VCC
2.15 V
200 1/2 VCC 800
50
11
20 k
12 13
VCC Ch.1 + output pin
VCC
5.0 V 2.15 V
200 1/2 VCC 800
50
13
20 k
5
AN7512
I Terminal Equivalent Circuits (continued)
Pin No. 14 Pin name GND
14
ICs for Audio Common Use
Equivalent circuit
Voltage 0V
15
Ch.1 - output pin
VCC
2.15 V
200 1/2 VCC 800
50
15
20 k
16
N.C.
Open
I Usage Notes
* Please avoid the short circuit 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.
I Technical Data
* PD Ta curve of HDIP016-P-0300 PD T a
2 000 1 800 Independent IC without a heat sink Rthj-a = 71C/W PD = 1 761 mW (25C)
1 600
Power dissipation PD (mW)
1 400 1 200 1 000 800 600 400 200 0 0 25 50 75 100 125 150
Ambient temperature Ta (C)
6
ICs for Audio Common Use
I Technical Data (continued)
* Main characteristics PO VCC
8 7 6 f = 1 kHz THD = 10% RL = 8 400 Hz HPF 30 kHz LPF Both ch. inputs Rg = 10 k VSTB = 5 V Vol. = 1.25 V Ch.2 (8 )
100 90
AN7512
ICQ , ISTB VCC
10 9 8 7 6 5 ICQ 40 30 20 10 ISTB RL = 8 Both ch. inputs Rg = 10 k VSTB = 0 V/5 V VMUTE = 0 V 4 3 2 1 6 8 10 12 14 0
Quiescent circuit current ICQ (mA)
80 70 60 50
5 4 3 2 1 0 0
Ch.1 (8 )
2
4
6
8
10
12
14
0
0
2
4
Supply voltage VCC (V)
Spply voltage VCC (V)
PO , THD VIN
10 VCC = 5 V f = 1 kHz RL = 8 400 Hz HPF 30 kHz LPF Both ch. inputs Rg = 10 k VSTB = 5 V Vol. = 1.25 V 100
3.5 3.0
PC , ICC PO
0.9 0.8 ICC (8 ) 2.5 0.6 2.0 0.5 0.4 PC (8 ) 1.0 0.5 0.0 0.0 VCC = 5V f = 1 kHz RL = 8 400 Hz HPF 30 kHz LPF 0.5 1.0 Both ch. inputs Rg = 10 k VSTB = 5 V Vol. = 1.25 V 0.3 0.2 0.1 0.0 1.5 0.7
Total harmonic distortion THD (%)
THD (ch.2, 10 kHz) THD (ch.1, 10 kHz) 0.1 THD (ch.1, 100 kHz) THD (ch.2, 100 kHz) THD (ch.2,1 kHz) 1
1.5
0.01 PO (ch.1, ch.2)
THD (ch.1, 1 kHz)
0.1
0.001 1 10 100
0.01 1 000
Input voltage VIN (mV[rms])
Output power PO (W)
GV , PO f
35 34 33 GV (ch.2) GV (ch.1) 2.0 1.8 1.6 1.4 PO (ch.1) PO (ch.2) 29 28 27 26 25 10 100 VCC = 5 V RL = 8 400 Hz HPF 30 kHz LPF 0.8 0.6 Both ch. inputs Rg = 10 k 0.4 VSTB = 5 V Vol. = 1.25 V 0.2 0.0 100 000 1.2 1.0
10
THD f
VCC = 5 V PO = 0.25 W RL = 8 400 Hz HPF 30 kHz LPF 1 Both ch. inputs Rg = 10 k VSTB = 5 V Vol. = 1.25 V
32 31 30
Total harmonic distortion THD (%)
Voltage gain GV (dB)
Output power PO (W)
Ch.2 0.1
Ch.1
1 000
10 000
0.01
10
100
1 000
10 000
100 000
Frequency f (Hz)
Frequency f (Hz)
Supply current ICC (A)
Output power PO (W)
1
10
Power consumption PC (W)
Standby current ISTB (A)
Output power PO (W)
7
AN7512
I Technical Data (continued)
* Main characteristics (continued) GV , THD VCC
40 39 38 PO = 0.25 W f = 1 kHz RL = 8 400 Hz HPF 30 kHz LPF Both ch. inputs Rg = 10 k VSTB = 5 V Vol. = 1.25 V GV (ch.2) GV (ch.1) THD (ch.2) THD (ch.1) 0 2 4 6 8 10 12 14 1.0 0.9
ICs for Audio Common Use
Att Vol.
0 10
Volume attenuation Att (dB)
0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0
Total harmonic distortion THD (%)
20 Ch.1, Ch.2 30 40 50 60 70 80 90 VCC = 5 V PO = 0.25 W f = 1 kHz RL = 8 400 Hz HPF 30 kHz LPF Rg = 10 k VSTB = 5 V Vol. = 0 V
Voltage gain GV (dB)
37 36 35 34 33 32 31 30
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
Supply voltage VCC (V)
Volume voltage Vol. (V)
RR VRIPPLE
80 Ch.1 (vol.-max.) 70
70 80
RR fRIPPLE
Ch.1 (vol.-max.)
Ripple rejection ratio RR (dB)
60 50 40 30 20 10 0 VCC = 5 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 Ch.2
Ripple rejection ratio RR (dB)
60 50 40 30 20 10 0
Ch.2 (vol.-max.)
Ch.2
VCC = 5 V Vol. = 1.25 V RL = 8 VRIPPLE = 0.5 V[rms] Rg = 10 k fRIPPLE = 120 Hz VSTB = 5V
Ch.1
Ch.1
10
100
1 000
10 000
10
100
1 000
10 000
100 000
Power supply ripple voltage VRIPPLE (mV[rms])
Power supply ripple frequency fRIPPLE (Hz)
RR VCC
80 Ch.1 (vol.-max.) 70
RR Vol.
80 70
VCC = 5 V RL = 8 30 kHz LPF Rg = 10 k VSTB = 5 V VRIPPLE = 0.5 V[rms] fRIPPLE = 120 Hz Ch.2
Ripple rejection ratio RR (dB)
Ch.2 (vol.-max.) 60 50 40 Ch.2 30 20 10 0 Ch.1 RL = 8 30 kHz LPF Rg = 10 k VSTB = 5 V Vol. = 0 V/1.25 V VRIPPLE = 0.5 V[rms] fRIPPLE = 120 Hz
Ripple rejection ratio RR (dB)
60 50 40
Ch.1
30 20 10 0
0
2
4
6
8
10
12
14
0.0
0.2
0.4
0.6
0.8
1.0
1.2
Supply voltage VCC (V)
Volume voltage Vol. (V)
8
ICs for Audio Common Use
I Technical Data (continued)
* Main characteristics (continued) VNO VCC
800 RL = 8 Rg = 10 k DIN audio filter VSTB = 5 V Vol. = 0 V/1.25 V
800
AN7512
VNO Rg
VCC = 5 V RL = 8 DIN audio filter VSTB = 5 V Vol. = 0 V/1.25 V
Output noise voltage VNO (V[rms])
Output noise voltage VNO (V[rms])
700 600 500 400 300 200 100 0 Ch.1, Ch.2
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 (vol.-max.) Ch.2 (vol.-max.)
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 ()
VNO Vol.
1 000 900
ICQ VSTB
80
VCC = 5 V RL = 8 Rg = 10 k Vol. = 1.25 V
Output noise voltage VNO (V[rms])
Ch.2 (FLAT) 700 600 500 400 300 200 Ch.1, Ch.2 100 0 0.0 VCC = 5 V RL = 8 Rg = 10 k DIN audio filter VSTB = 5 V
Static circuit current ICQ (A)
800
Ch.1 (FLAT)
70 60 50
ICQ
40 30 20 10 0 0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0.5
1.0
1.5
2.0
2.5
3.0
Volume voltage Vol. (V)
Standby voltage VSTB (V)
Att VCC
100
Att VIN
100
90
90
Volume attenuation Att (dB)
Volume attenuation Att (dB)
Ch.2 80 Ch.1
80 Ch.1, Ch.2 70 PO = 0.25 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
70 VCC = 5 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
60
60
50
50
40
40
Supply voltage VCC (V)
Input voltage VIN (mV[rms])
9
AN7512
I Technical Data (continued)
* Main characteristics (continued) Att f
100 95
ICs for Audio Common Use
THD Vol.
10 VCC = 5 V PO = 0.25 W f = 1 kHz RL = 8 400 Hz HPF 30 kHz LPF Rg = 10 k VSTB = 5 V Vol. = 1.25 V
Volume attenuation Att (dB)
90 85 80 75 70 65 60 55 50 10 100 1 000 VCC = 5 V PO = 0.25 W RL = 8 Rg = 10 k VSTB = 5 V Vol. = 0 V Ch.1, Ch.2
Total hrmonic distortion THD (%)
1
Ch.2 0.1 Ch.1
10 000
100 000
0.01
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
Frequency f (Hz)
Volume voltage Vol. (V)
CT VCC
90 80 70 Ch.2
CT VIN
90 80 Ch.2 70 Ch.1
Closs talk CT (dB)
Closs talk CT (dB)
60 50 40 30 20 10 0 0 2
Ch.1
60 50 40 30 20 10 0 VCC = 5 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
PO = 0.25 W f = 1 kHz RL = 8 400 Hz HPF 30 kHz LPF Rg = 10 k VSTB = 5 V Vol. = 1.25 V 4 6 8 10 12 14
Supply voltage VCC (V)
Input voltage VIN (mV[rms])
CT f
90 80 Ch.1 70
Closs talk CT (dB)
60 50 40 30 20 10 0 Ch.2
VCC = 5 V PO = 0.25 W RL = 8 Rg = 10 k VSTB = 5 V Vol. = 1.25 V
10
100
1 000
10 000
100 000
Frequency f (Hz)
10
ICs for Audio Common Use
I Technical Data (continued)
* Example of PCB pattern Ch.2 out- Ch.2 out+ Ch.1 out+ Ch.1 out- VCC GND 16 15 14 13 12 11 10 9
AN7512
TAB
1
2
3
4
5
6
7
8
TAB
GND (input) VIN (ch.2) Volume VIN (ch.1) Standby
I Application Circuit Example
Out1 8 VCC Out2 8
16
15
14
13
12
11
10
1
2
3
4
5
6
7
1.0 F 270 k 1.0 F 68 k 10 k 10 F
1.0 F 10 k
Standby
VIN1
Volume
VIN2 11
8
9
Request for your special attention and precautions in using the technical information and semiconductors described in this material
(1) An export permit needs to be obtained from the competent authorities of the Japanese Government if any of the products or technologies described in this material and controlled under the "Foreign Exchange and Foreign Trade Law" is to be exported or taken out of Japan. (2) The technical information described in this material is limited to showing representative characteristics and applied circuit examples of the products. It does not constitute the warranting of industrial property, the granting of relative rights, or the granting of any license. (3) The products described in this material are intended to be used for standard applications or general electronic equipment (such as office equipment, communications equipment, measuring instruments and household appliances). Consult our sales staff in advance for information on the following applications: * Special applications (such as for airplanes, aerospace, automobiles, traffic control equipment, combustion equipment, life support systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of the products may directly jeopardize life or harm the human body. * Any applications other than the standard applications intended. (4) The products and product specifications described in this material are subject to change without notice for reasons of modification and/or improvement. At the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date Product Standards in advance to make sure that the latest specifications satisfy your requirements. (5) When designing your equipment, comply with the guaranteed values, in particular those of maximum rating, the range of operating power supply voltage and heat radiation characteristics. Otherwise, we will not be liable for any defect which may arise later in your equipment. Even when the products are used within the guaranteed values, redundant design is recommended, so that such equipment may not violate relevant laws or regulations because of the function of our products. (6) When using products for which dry packing is required, observe the conditions (including shelf life and after-unpacking standby time) agreed upon when specification sheets are individually exchanged. (7) No part of this material may be reprinted or reproduced by any means without written permission from our company.
Please read the following notes before using the datasheets
A. These materials are intended as a reference to assist customers with the selection of Panasonic semiconductor products best suited to their applications. Due to modification or other reasons, any information contained in this material, such as available product types, technical data, and so on, is subject to change without notice. Customers are advised to contact our semiconductor sales office and obtain the latest information before starting precise technical research and/or purchasing activities. B. Panasonic is endeavoring to continually improve the quality and reliability of these materials but there is always the possibility that further rectifications will be required in the future. Therefore, Panasonic will not assume any liability for any damages arising from any errors etc. that may appear in this material. C. These materials are solely intended for a customer's individual use. Therefore, without the prior written approval of Panasonic, any other use such as reproducing, selling, or distributing this material to a third party, via the Internet or in any other way, is prohibited.
2001 MAR

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