TA8216HQ
TOSHIBA Bipolar Linear Integrated
Circuit Silicon Monolithic
TA8216HQ
Dual Audio Power Amplifier
The TA8216HQ is dual audio power amplifier for consumer
applications.
This IC provides an output power of 13 watts per channel
(at V
CC
= 28V, f = 1kHz, THD = 10%, R
L
= 8
Ω).
It is suitable for power amplifier of music center.
Features
•
•
High output power: P
out
= 13 W/channel (Typ.)
(V
CC
= 28 V, R
L
= 8
Ω,
f = 1 kHz, THD = 10%)
Low noise: V
no
= 0.14 mVrms (Typ.)
(V
CC
= 28 V, R
L
= 8
Ω,
G
V
= 34dB, R
g
= 10 kΩ,
BW = 20 Hz~20 kHz)
•
•
•
•
Very few external parts.
Built in audio muting circuit.
Built in thermal shut down protector circuit.
Operation supply voltage range (Ta = 25°C)
: V
CC (opr)
= 10~37 V (R
L
= 8
Ω)
: V
CC (opr)
= 10~24 V (R
L
= 4
Ω)
Weight: 4.04 g (typ.)
1
2004-08-25
TA8216HQ
2. Muting
(1)
Audio muting
This IC is possible to make audio muting operation by using 11 pin muting terminal.
In Fig.3, the equivalent circuit in the muting circuit section is shown.
By means of reducing the voltage of 11 pin down to 2.8 V or less in Fig.3, Q
1
is turned ON and the
base voltage of Q
2
in the differential circuit fabricated with Q
2
and Q
3
.
Therefore, with the voltage reduction of 11 pin, the input circuits of dummy of input terminal and
that in the doted line operate and cut-off the input signal.
After muting, the bias circuit continues 1st operation and the power supply current of quiescent time.
8 pin, the capacitor terminal for reducing the pop noise can reduce the pop noise through making the
time constant longer by means of inserting the capacitor externary.
In the care this terminal is not used, short 8 pin with 11 pin.
The voltage of 11 pin set up to 4 V or more.
IC internal muting at V
CC
OFF
When V
CC
=
8 V or less at V
CC
off, the detection circuit at V
CC
off is operated. And the base voltage of
Q
1
is reduced and the muting operation is mode.
(2)
9
Reference
voltage
The detection
circuit at
V
CC
→
OFF
Q
1
100
Ω
1 kΩ
Q
2
Q
3
I
1
I
2
I
3
I
4
I
5
I
6
V
CC
Q
6
D
1
D
2
Q
4
Q
5
20 kΩ
7/12 OUT
11
Mute
8
2/4
IN
Figure 3
3. Precaution for 4
Ω
load resistance use
Internal output current detection and protection circuit protect the IC from the influence of unusual excess
current. And this function causes the interrupted sound in case of excess input voltage with V
CC
higher
than recommended supply voltage (24V).
Therefore, the power supply regulation must be fully investigated so as not to make the V
CC
be high than
recommendation supply voltage (24V).
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.
400
Ω
1/5
NF
3
2004-08-25
TA8216HQ
Maximum Ratings
(Ta
=
25°C)
Characteristics
Supply voltage
Output current (Peak/ch)
Power dissipation
Operation temperature
Storage temperature
Symbol
V
CC
I
O (peak)
P
D
(Note)
T
opr
T
stg
Rating
40
3.0
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
Characteristics
Quiescent current
(unless otherwise specified V
CC
=
28 V, R
L
=
8
Ω
, R
g
=
600
Ω
, f
=
1 kHz, Ta
=
25°C)
Symbol
I
CCQ
P
out
(1)
Output power
P
out
(2)
P
out
(3)
Total harmonic distortion
Voltage gain
Input resistance
Ripple rejection ratio
Output noise voltage
Cross talk
Muting threshold voltege
THD
G
V
R
IN
R.R.
V
no
C.T.
V
th
11
Test
Circuit
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
V
in
=
0
THD
=
10%
THD
=
1%
THD
=
10%, V
CC
=
24 V,
R
L
=
4
Ω
Pout
=
2 W
V
out
=
0.775 Vrms (0dBm)
⎯
Rg
=
0, f
ripple
=
100 Hz
V
ripple
=
0.775 Vrms (0dBm)
Rg
=
10 kΩ,
BW
=
20 Hz~20 kHz
Rg
=
10 kΩ,
V
out
=
0.775 Vrms (0dBm)
⎯
Test Condition
Min
⎯
10
⎯
⎯
⎯
32.5
⎯
−40
⎯
⎯
2.6
Typ.
50
13
10
13
0.04
34.0
30
−50
0.14
−70
2.8
Max
105
⎯
⎯
⎯
0.2
35.5
⎯
⎯
0.3
⎯
⎯
%
dB
kΩ
dB
mVrms
dB
V
W
Unit
mA
Typ. DC Voltage of Each Terminal
(V
CC
=
28 V, Ta
=
25°C)
Terminal No.
DC voltage (V)
1
1.6
2
20m
3
GND
4
20m
5
1.6
6
9.4
7
13.0
8
5.0
9
V
CC
10
GND
11
2.8
12
13.0
5
2004-08-25
嵌入式系统
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