TA8265K
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA8265K
Dual Audio Power Amplifier
TA8265K is a high-output audio power IC developed for
outputting audio signals for TV and compact stereos.
Fewer external components and a sealed compact 10-pin
package means the IC needs only a small space on the printed
circuit board.
The IC incorporates thermal shutdown and load
short-protection circuits.
Features
·
High output power: Pout = 6 W/channel (Typ.)
·
Low noise: Vno = 0.14 mVrms (Typ.)
·
Very few external parts
·
Built in thermal shut down protector circuit
·
Operating supply voltage range: VCC (opr) = 10~30 V (Ta = 25°C)
(VCC = 20 V, RL = 8 Ω, f = 1 kHz, THD = 10%)
Weight: 3.15 g (typ.)
(VCC = 20 V, RL = 8 Ω, GV = 34dB, Rg = 10 kΩ, BW = 20 Hz~20 kHz)
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TA8265K
Block Diagram
VCC
6
Ripple Filter
INPUT1
4
5
8
VCC
IN1
400 W
OUT1
AMP1
7
RL
20 kW
3
Pre-GND
PW-GND 9
20 kW
RL
1
INPUT1
400 W
AMP2
OUT2
2 IN2
10
Application Information
Voltage gain
The closed loop voltage gain is determined by R1, R2.
GV
Input
4/2
R + R2
= 20 log 1
(dB)
R2
5/1
20 kW + 400 W
400 W
~
- 34 (dB)
400 W
= 20log
(a)
7/10
R2
Output
R1
20 kW
Figure 1
Amplifier with gain GV <34 (dB)
G V = 20 log
R1 + R 2 + R 4
(dB)
R2 + R4
Input
4/2
R4
When R4 = 220 W
GV ~
- 30 (dB)
is gein.
5/1
7/10
R2
400 W
Output
R1
20 kW
Figure 2
Cautions
This IC is not proof enough against a strong E-M field by CRT which may cause malfunction such as leak.
Please set the IC keeping the distance from CRT.
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TA8265K
Standard P.C.B
(Bottom view)
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TA8265K
Maximum Ratings (Ta = 25°C)
Characteristic
Symbol
Rating
Unit
VCC
30
V
IO (peak)
2
A
20
W
Supply voltage
Output current (peak/ch)
Power dissipation
PD (Note)
Operating temperature
Topr
-20~75
°C
Storage temperature
Tstg
-55~150
°C
Note: Derated above Ta = 25°C in the proportion of 267 mW/°C.
Electrical Characteristics
(Unless otherwise specified, VCC = 20 V, RL = 8 9, Rg = 600 9, f = 1 kHz, Ta = 25°C)
Symbol
Test
Circuit
ICCQ
¾
Pout (1)
Pout (2)
Total harmonic distortion
Min.
Typ.
Max
Unit
Vin = 0
¾
75
130
mA
¾
THD = 10%
5.0
6.0
¾
¾
THD = 1%
¾
4.5
¾
THD
¾
Pout = 2 W
¾
0.1
0.6
%
Closed loop voltage gain
GV
¾
Vout = 0.775 Vrms (0dBm)
32.5
34.0
35.5
dB
Cross talk
C.T.
¾
Vout = 0.775 Vrms (0dBm)
¾
-65
¾
dB
Input resistance
RIN
¾
¾
30
¾
kW
Ripple rejection ratio
R.R.
¾
Rg = 10 kW, fripple = 100 Hz
Vripple = 0.775 Vrms (0dBm)
-45
-57
¾
dB
Output noise voltage
Vno
¾
Rg = 10 kW,
BW = 20 Hz~20 kHz
¾
0.14
0.3
mVrms
Characteristic
Quiescent current
Output power
Test Condition
¾
W
Typ. DC Voltage of Each Terminal (VCC = 20 V, Ta = 25°C)
Terminal No.
1
2
3
4
5
6
7
8
9
10
DC voltage (V)
2.1
2.25
GND
2.25
2.1
6.8
9.8
VCC
GND
9.8
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TA8265K
4
47 mF 47 mF
5
1.0 mF
OUT1
AMP1
7
1000 mF
20 kW
3
Pre-GND
PW-GND 9
20 kW
1
INPUT1
400 W
400 W
AMP2
OUT2
2
5
10
0.12 mF 0.12 mF
1.0 mF
2.2 W
INPUT1
8
2.2 W
6
Ripple Filter
VCC
1000 mF
100 mF
Test Circuit
RL
RL
1000 mF
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TA8265K
ICCQ, Vout (DC) – VCC
GV – f
160
32
90
VCC = 20 V
RL = 8 W
Vout = 0.775 Vrms
(0dBm)
80
ICCQ
80
16
VOUT (DC)
(V7, V10)
8
40
GV
24
Voltage gain
120
(dB)
(V)
Ta = 25°C
Output voltage Vout (DC)
Quiescent current
ICCQ (mA)
Vin = 0
70
60
50
40
30
20
10
0
0
8
16
24
0
40
32
Supply voltage VCC
0
30
100
300
THD – POUT
10k
30k
100k
(Hz)
THD – POUT
30
(%)
VCC = 20 V
RL = 8 W
Ta = 25°C
THD
5
3
Total harmonic distortion
(%)
THD
Total harmonic distortion
3k
Frequency f
(V)
30
10
1k
1
0.5
0.3
f = 10 kHz
0.1
100 Hz
0.05
f = 1 kHz
RL = 8 W
Ta = 25°C
10
5
3
VCC = 12 V
20
28
1
0.5
0.3
0.1
0.05
1 kHz
0.02
0.03
0.1
0.3
1
3
Output Power Pout
10
0.02
30
0.3
1
(W)
3
THD – f
100
300
(W)
C.T. – f
-10
VCC = 20 V
RL = 8 W
Pout = 2 W
Ta = 25°C
VCC = 20 V
RL = 8 W
Rg = 620 W
Vout = 0.775Vrms
(0dBm)
Ta = 25°C
C.T. (dB)
-20
1
0.5
0.3
Cross talk
(%)
THD
Total harmonic distortion
30
Output Power Pout
5
3
10
0.1
-30
-40
-50
-60
-70
0.05
-80
0.02
30
100
300
1k
3k
Frequency f
10k
30k
100k
30
(Hz)
100
300
1k
3k
Frequency f
6
10k
30k
100k
(Hz)
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TA8265K
R.R. – f
C.T. – Rg
-10
-10
C.T. (dB)
Cross talk
-40
Ripple rejection ratio R.R. (dB)
f = 1 kHz
RL = 8 W
VOUT = 0.775 Vrms
(0dBm)
Ta = 25°C
-30
-50
-60
-70
-80
-90
-100
VCC = 20 V
RL = 8 W
Rg = 620 W
Vripple = 0.775 Vrms
(0dBm)
Ta = 25°C
VCC = 20 V
-20
30
100
300
1k
3k
10k
30k
-20
-30
-40
-50
-60
-70
-80
-90
100k
30
100
Signal source resistance Rg (9)
300
-50
-60
-70
-80
(Hz)
(mVrms)
VCC = 20 V
RL = 8 W
BW = 20 Hz~20 kHz
Ta = 25°C
0.28
0.20
0.16
0.12
0.08
0.04
0
30
100
300
1k
3k
10k
30k
100k
30
300
1k
3k
10k
30k
Signal source resistance Rg (9)
Vno – Ta
ICCQ – Ta
VCC = 20 V
RL = 8 W
Rg = 10 W
BW = 20 Hz~20 kHz
0.04
-20
0
20
40
60
120
80
40
0
-40
80
Ambient temperature Ta (°C)
100k
VCC = 20 V
Vin = 0
160
0.08
0
-40
100
Signal source resistance Rg (9)
ICCQ (mA)
(mVrms)
0.24
Output noise voltage
-40
Vno
-30
0.32
Quiescent current
Ripple rejection ratio R.R. (dB)
VCC = 20 V
RL = 8 W
fripple = 100Hz
Vripple = 0.775 Vrms
(0dBm)
Ta = 25°C
-20
Vno
Output noise voltage
30k
0.36
-10
0.12
10k
Vno – Rg
R.R. – Rg
0.16
3k
Frequency f
0
-90
1k
-20
0
20
40
60
80
Ambient temperature Ta (°C)
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TA8265K
Pout – VCC
THD – Ta
16
0.1
0.05
0.02
-40
-20
0
20
40
60
Pout (W)
(%)
THD
Total harmonic distortion
0.3
RL = 8 W
f = 1 kHz
THD = 10%
12
Output power
VCC = 20 V
RL = 8 W
f = 1 kHz
POUT = 2 W
0.5
8
4
0
0
80
8
Ambient temperature Ta (°C)
16
Supply voltage VCC
32
40
(V)
PD – Pout
16
16
(W)
RL = 8 W
f = 1 kHz
Ta = 25°C
f = 1 kHz
RL = 8 W
Dual
Ta = 25°C
12
VCC = 28 V
PD
12
Power dissipation
(W)
PD MAX – VCC
Maximum power dissipation PD MAX
24
8
4
8
20
4
12
0
10
14
18
22
26
Supply voltage VCC
0
0
30
(V)
4
8
Output power
12
16
20
Pout (W)
Allowable power dissipation PD
(W)
PD – Ta
Infinite heat sink
20
10
No heat sink
60ºC/W
0
0
25
50
75
100
150
Ambient temperature Ta (°C)
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TA8265K
Package Dimensions
Weight: 3.15 g (typ.)
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TA8265K
RESTRICTIONS ON PRODUCT USE
000707EBF
· TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor
devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical
stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of
safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of
such TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as
set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and
conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability
Handbook” etc..
· The TOSHIBA products listed in this document are intended for usage in general electronics applications
(computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances,
etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires
extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or
bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or
spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments,
medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this
document shall be made at the customer’s own risk.
· This product generates heat during normal operation. However, substandard performance or malfunction may
cause the product and its peripherals to reach abnormally high temperatures.
The product is often the final stage (the external output stage) of a circuit. Substandard performance or
malfunction of the destination device to which the circuit supplies output may cause damage to the circuit or to the
product.
· The products described in this document are subject to the foreign exchange and foreign trade laws.
· The information contained herein is presented only as a guide for the applications of our products. No
responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other
rights of the third parties which may result from its use. No license is granted by implication or otherwise under
any intellectual property or other rights of TOSHIBA CORPORATION or others.
· The information contained herein is subject to change without notice.
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