TOSHIBA TA8256BH_02

TA8256BH
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA8256BH
Audio Power Amplifier 6 W × 3 Ch
TA8256BH is 3 channel audio power amplifier for Consumer
applications.
This IC provides an output power of 6 watts per channel
(at VCC = 20 V, f = 1 kHz, THD = 10%, RL = 8 Ω).
It is suitable for power amplifier of TV and home Stereo.
Features
·
High output power: Pout = 6 W (Typ.)
·
Built-in audio muting circuit.
·
NF terminal capacitor less
(VCC = 20 V、RL = 8 Ω、f = 1 kHz、THD = 10%)
:
·
Weight: 4.04 g (typ.)
Fixed gain (Gv = 34dB), needless external capacitor.
Protectors
:
Thermal shut down protection circuit, over voltage protection circuit
·
Low poping noise
·
High THD ratio
·
High input dynamic range
·
Available for using same PCB layout with 2 channel IC: TA8246AH
·
Operating supply voltage range
:
VCC (opr) = 10~30 V (Ta = 25°C)
1
2002-02-13
TA8256BH
Block Diagram
VCC
6
RIPPLE FILTER
9
Amp 1
OUT1
350 W
8
RL
20 kW
3 Pre-GND
V18
2.1 V
4
30 kW
4 kW
INPUT1
PW-GND 10
RL
20 kW
350 W
Amp 2
4 kW
2
INPUT3
1
OUT2
12
30 kW
INPUT2
30 kW
4 kW
Amp 3
OUT3
11
RL
350 W
20 kW
5
7
MUTE SW
2
MUTE T.C.
2002-02-13
TA8256BH
Terminal Explanation
Terminal
No.
1
Symbol
Function
Equivalent Circuit
VCC
IN3
1, 2, 4
IN2
Input
30 kW
2
20 kW
OUT
350 W
4 kW
IN
NF
4
IN1
3
Pre-GND
GND
¾
GND terminal
VCC
5
MUTE SW
7
7
to MUTE
Amplifier
10 kW
MUTE control terminal
5
MUTE T.C.
10 kW
GND
6
R/F
to POP-NOIZE
preventive circuit
Ripple filter
to Bias circuit
5.1 kW
6
8
OUT1
VCC
8, 11, 12
Output
11
OUT3
12
OUT2
9
VCC
Supply voltage terminal
¾
10
PW-GND
GND terminal
¾
2.2 kW
OUT
GND
3
2002-02-13
TA8256BH
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.
Maximum Ratings (Ta = 25°C)
Characteristic
Supply voltage
Output current (peak/ch)
Power dissipation
Symbol
Rating
Unit
VCC
30
V
IO (peak)
2
A
PD (Note)
25
W
Operating temperature
Topr
-20~75
°C
Storage temperature
Tstg
-55~150
°C
Note: Derated above Ta = 25°C in the proportion of 200 mW/°C.
Electrical Characteristics
(Unless otherwise specified, VCC = 20 V, RL = 8 W, Rg = 620 W, f = 1 kHz, Ta = 25°C)
Symbol
Test
Circuit
ICCQ
¾
Vin = 0
Pout (1)
¾
THD = 10%
Pout (2)
¾
THD = 1%
THD (1)
¾
Pout = 2 W
THD (2)
¾
Pout = 2 W, f = 10 kHz,
Voltage gain
Gv
¾
Vout = 0.775 Vrms
Input resistance
RIN
¾
Ripple rejection ratio
R.R.
¾
Output noise voltage
Vno
Characteristic
Quiescent current
Output power
Total harmonic distortion
Cross talk
Mute control voltage
Mute attenuation level
Test Condition
Min.
Typ.
Max
Unit
65
100
180
mA
5
6
¾
¾
4.5
¾
¾
0.04
0.2
¾
0.1
0.6
32.5
34
35.5
dB
¾
34
¾
kW
f = 100 Hz,
Vripple = 0.775 Vrms
-40
-47
¾
dB
¾
Rg = 10 kW,
BW = 20 Hz~20 kHz
¾
0.14
0.3
mVrms
dB
¾
%
C.T.
¾
Vout = 0.775 Vrms
¾
-60
¾
Vth (ON)
¾
MUTE ON
3.1
¾
VCC
Vth (OFF)
¾
MUTE OFF
0
¾
2.5
ATT
¾
Vout = 0.775 Vrms ® Mute
-52
-60
¾
4
W
V
dB
2002-02-13
TA8256BH
6
RIPPLE FILTER
9
VCC
1000 mF
100 mF
Test Circuit
4 kW
1000 mF
OUT1
20 kW
3 Pre-GND
V18
2.2 W
20 kW
350 W
Amp 2
4 kW
2
1.0 mF
OUT2
RL
12
1000 mF
30 kW
INPUT2
RL
PW-GND 10
0.10 mF
350 W
8
0.10 mF
Amp 1
2.2 W
1.0 mF
2.1 V
4
30 kW
INPUT1
4 kW
OUT3
350 W
11
20 kW
5
0.10 mF
1000 mF
Amp 3
2.2 W
1.0 mF
RL
7
MUTE SW
5
10 mF
1
30 kW
INPUT3
MUTE T.C.
2002-02-13
TA8256BH
ICCQ, Vout (DC) – VCC
THD – f
30
200
20
10
10
VCC = 20 V
5 Pout = 2 W
3 RL = 8 W
1
Total harmonic distortion
ICCQ
100
THD
(V)
Vout (DC)
Output voltage Vout (DC)
Quiescent current
ICCQ (mA)
(%)
300
0.5
0.3
0.1
0.05
0.03
0.01
30
0
0
4
8
12
16
20
24
Supply voltage VCC
28
32
100
0
36
300
10 k
30 k
100 k
(Hz)
(V)
THD – Pout
THD – Pout
30
VCC = 20 V
f = 1 kHz
RL = 8 W
RL = 8 W
10
5
5
(%)
10
3
3
VCC = 12 V
20
28
THD
THD
(%)
3k
Frequency f
30
1
Total harmonic distortion
Total harmonic distortion
1k
0.5
0.3
0.1
f = 10 kHz
0.05
1
0.5
0.3
0.1
0.05
f = 1 kHz
0.03
0.03
f = 100 Hz
0.01
0.01
0.3
0.5
1
3
5
Output Power Pout
10
30
0.3
(W)
0.5
1
3
5
Output Power Pout
6
10
30
(W)
2002-02-13
TA8256BH
Pout – VCC
Gv – f
70
f = 1 kHz
18 RL = 8 W
THD = 10%
16
VCC = 20 V
14
(dB)
50
12
Gv
60 Vout = 0.775 Vrms
RL = 8 W
40
10
Voltage gain
Output power
Pout (W)
20
8
6
30
20
4
10
2
0
0
10 12 14 16 18 20 22 24 26 28 30 32 34 36 38
Supply voltage VCC
30
100
(V)
300
R.R. – f
30 k
100 k
30 k
100 k
30 k
100 k
(Hz)
C.T. – f
C.T. (dB)
VCC = 20 V
RL = 8 W
-10 R = 0
g
Vripple = 0.775 Vrms
-20
-30
Cross talk
Ripple rejection ratio R.R. (dB)
10 k
0
-40
-50
-60
VCC = 20 V
RL = 8 W
-10 V
out = 0.775 Vrms
Rg = 10 kW
-20
-30
-40
-50
-60
30
100
300
1k
3k
Frequency f
10 k
30 k
-70
100 k
30
100
(Hz)
300
1k
3k
Frequency f
Vno – Rg
10 k
(Hz)
R.R. – Rg
0
1.6
1.0
Ripple rejection ratio R.R. (dB)
(mVrms)
Vno
VCC = 20 V
1.4 RL = 8 W
BW = 20 Hz~20 kHz
1.2
Output noise voltage
3k
Frequency f
0
-70
1k
0.8
0.6
0.4
0.2
100
300
1k
3k
10 k
30 k
-30
-40
-50
-60
-70
0
30
VCC = 20 V
RL = 8 W
-10 f
ripple = 100 Hz
Vripple = 0.775 Vrms
-20
100 k
Signal source resistance Rg (9)
30
100
300
1k
3k
10 k
Signal source resistance Rg (9)
7
2002-02-13
TA8256BH
PD – Pout
C.T. – Rg
18
-30
-40
-50
12 V
CC = 28 V
10
THD = 1%
10%
8
20 V
6
4
12 V
-60
-70
Dual
16 f = 1 kHz
RL = 8 W
14
PD
(W)
VCC = 20 V
f = 1 kHz
-10 R = 8 W
L
Vout = 0.775 Vrms
-20
Power dissipation
Cross talk
C.T. (dB)
0
2
30
100
300
1k
3k
10 k
30 k
0
0
100 k
2
4
6
Output power
Signal source resistance Rg (9)
160
ICCQ (mA)
RL = 8 W
16
14
12
16
Pout (W)
VCC = 20 V
Vin = 0
140
120
8
6
4
60
40
20
2
0
8
80
12
16
20
24
28
0
-40
32
-20
0
(V)
(%)
VCC = 20 V
Rg = 10 kW
0.6
Total harmonic distortion
0.5
0.4
0.3
0.2
0.1
0
-40
-20
0
20
40
40
60
80
100
80
100
THD – Ta
10
THD
0.7
20
Ambient temperature Ta (°C)
Vno – Ta
(mVrms)
14
100
10
0.8
Vno
12
ICCQ – Ta
f = 1 kHz
Supply voltage VCC
Output noise voltage
10
180
Quiescent current
Maximum power dissipation PD (max)
(W)
PD MAX – VCC
20
18
8
60
80
5
3
1
0.5
0.3
0.1
0.05
0.03
0.01
-40
100
Ambient temperature Ta (°C)
VCC = 20 V
RL = 8 W
f = 1 kHz
Pout = 2 W
Dual
-20
0
20
40
60
Ambient temperature Ta (°C)
8
2002-02-13
TA8256BH
Allowable power dissipation PD MAX
(W)
PD MAX – Ta
30
1: Infinite heat sink
1
2: 4.1°C/W heat sink
25
3: 9.5°C/W heat sink
20
2
15
3
10
5
0
0
25
50
75
100
125
150
175
200
Ambient temperature Ta (°C)
9
2002-02-13
TA8256BH
Package Dimensions
Weight: 4.04 g (typ.)
10
2002-02-13
TA8256BH
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.
11
2002-02-13