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 V
CC
= 20 V, f = 1 kHz, THD = 10%, R
L
= 8
Ω).
It is suitable for power amplifier of TV and home Stereo.
Features
·
·
·
·
·
·
·
·
·
High output power: P
out
= 6 W (Typ.)
(V
CC
= 20 V、R
L
= 8
Ω、f
= 1 kHz、THD = 10%)
Built-in audio muting circuit.
NF terminal capacitor less
:
:
Fixed gain (G
v
= 34dB), needless external capacitor.
Thermal shut down protection circuit, over voltage protection circuit
Protectors
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
:
V
CC (opr)
= 10~30 V (Ta = 25°C)
Weight: 4.04 g (typ.)
1
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
Operating temperature
Storage temperature
Symbol
V
CC
I
O (peak)
P
D
(Note)
T
opr
T
stg
Rating
30
2
25
-20~75
-55~150
Unit
V
A
W
°C
°C
Note: Derated above Ta
=
25°C in the proportion of 200 mW/°C.
Electrical Characteristics
Characteristic
Quiescent current
Output power
(Unless otherwise specified, V
CC
=
20 V, R
L
=
8
W
, R
g
=
620
W
, f
=
1 kHz, Ta
=
25°C)
Symbol
I
CCQ
P
out
(1)
P
out
(2)
THD (1)
Total harmonic distortion
THD (2)
Voltage gain
Input resistance
Ripple rejection ratio
Output noise voltage
Cross talk
Mute control voltage
Mute attenuation level
G
v
R
IN
R.R.
V
no
C.T.
V
th (ON)
V
th (OFF)
ATT
Test
Circuit
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
V
in
=
0
THD
=
10%
THD
=
1%
P
out
=
2 W
P
out
=
2 W, f
=
10 kHz,
V
out
=
0.775 Vrms
¾
f
=
100 Hz,
V
ripple
=
0.775 Vrms
Rg
=
10 kW,
BW
=
20 Hz~20 kHz
V
out
=
0.775 Vrms
MUTE ON
MUTE OFF
V
out
=
0.775 Vrms
®
Mute
Test Condition
Min.
65
5
¾
¾
¾
32.5
¾
-40
¾
¾
3.1
0
-52
Typ.
100
6
4.5
0.04
0.1
34
34
-47
0.14
-60
¾
¾
-60
Max
180
¾
¾
0.2
%
0.6
35.5
¾
¾
0.3
¾
V
CC
2.5
¾
dB
dB
kW
dB
mVrms
dB
V
Unit
mA
W
4
2002-02-13
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