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Электронный компонент: 8229

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UTC TA8229
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R107-028,A
LOW FREQUENCY POWER
AMPLIFIER
DESCRIPTION
The UTC TA8229 is an audio power IC with built-in
two channels developed for portable radio cassette tape
recorder with power ON/OFF switch.
Because of the parts reduction and SIP (Single Inline
Package), space merit is remarkable.
Thermal shut down protection circuit is buit in.
FEATURES
* High Power
: P
out (1)
= 2.5W (Typ.)
(V
CC
= 9V, R
L
= 4, f = 1kHz, THD = 10%)
: P
out (2)
= 4.6W (Typ.)
(V
CC
= 12V, R
L
= 4, f = 1kHz, THD = 10%)
* Low Popping Noise at Power ON
* Small Quiescent Current
: I
CCQ
= 21mA (Typ.) (V
CC
= 15V, V
in
= 0)
* Soft Clip
* Built-in Thermal Shut Down Protection Circuit
* Best for Supply Voltage 9V, 12V
* Operation Supply Voltage Range : V
CC (opr)
= 6 ~ 15V
(Ta = 25)
HSIP-15
HSIP-14

PIN DESCRIPTION
PIN NO.
HSIP-14 HSIP-15
PIN NAME
1
NC
1 2
B.S.
2
2 3
OUT
2
3 4
Vcc
1
4 5
OUT
1
5 6
B.S.1
6 7
Power-GND
7 8
Vcc
2
8 9
RIPPLE
9 10
NF1
10 11
IN
1
11 12
IN
2
12 13
NF
2
13 14
Pre-GND
1
14 15
Pre-GND
2




UTC TA8229
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R107-028,A
BLOCK DIAGRAM
HSIP-15
+
-
14
15
7
4
8
1
V
CC2
B.S.1
IN1
NF1
45
30k
OUT1
Ch-1
10
5
RIPPLE
IN2
NF2
45
13
Pre-GND1.
9
11
+
-
12
BIAS CIRCUIT
THERMAL SHUT
DOWN PROTECTION
CIRCUIT
Ch-2
OUT2
30k
Pre-GND2.
pin : NC
2
6
B.S.2
3
Power-GND
V
CC1

ABSOLUTE MAXIMUM RATINGS
(Ta = 25)
PARAMETER
SYMBOL RATINGS UNIT
Supply Voltage
V
CC
20
V
Output Current (Peak/CH)
I
O (peak)
2.5 A
Power Dissipation
P
D
(Note)
15.0
W
Operating Temperature
T
opr
-20 ~ 75
Storage Temperature
T
stg
-55 ~ 150
Note: Derated above Ta = 25 in the proportion of 120mW/.
UTC TA8229
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R107-028,A

ELECTRICAL CHARACTERISTICS
(V
CC
=9V
,
R
L
=4, R
g
=600, f=1kHz, T
a
=25, R
f
=120, unless otherwise specified.)
PARAMETER SYMBOL TEST
CONDITIONS MIN
TYP
MAX
UNIT
Quiescent Current
I
CCQ
V
in
= 0
21
45
mA
P
out (1)
THD = 10%
2.0
2.5
Output Power
P
out (2)
THD = 10%, V
CC
= 12V
4.6
W
Total Harmonic Distortion
THD
P
out
= 0.4W/ch
0.2
1.0
%
G
V (1)
R
f
= 120, V
out
= 0.775V
rms
(0dBm)
43 45 47
Voltage Gain
G
V (2)
R
f
= 0, V
out
= 0.775V
rms
(0dBm)
56.5
dB
Input Resistance
R
IN
30 k
Output Noise Voltage
V
no
R
g
= 10k, BW = 20Hz ~ 20kHz
0.3
1.0
mV
rms
Ripple Rejection Ratio
R.R.
R
g
= 600, f
ripple
= 100kHz
-52
dB
Cross Talk
C.T.
R
g
= 600, amp1 2
V
out
= 0.775V
rms
(0dBm)
-50 dB
Input Offset Voltage
V
11
, V
12
30
60
mV
Stand-by Current
I
OFF
SW1 OFF
1
A
APPLICATION INFORMATION AND APPLICATION METHOD
1. Adjustment of voltage gain
The voltage gain G
V
is obtained as follows by R1, R2 and R
f
in Fig.1.
R
f
+ R1 + R2
G
V
= 20 log
R
f
+ R1
When R
f
= 0, G
V
= 56.5dB (Typ.)
When R
f
= 120, G
V
= 45dB (Typ.)
By increasing R
f
, reduction of G
V
is possible. However, since the feedback increase is liable to produce oscillation,
it is recommended to use this at 40dB or over.
+
-
45
30k
AMP
+
-
C
NF
R
f
47F
R1
OUTPUT
R2
INPUT
11/12
3/5
Fig.1
10/13
2. Thermal shut-down circuit
The thermal shut-down circuit is built in for the purpose of preventing the destruction of IC due to the abnormal
temperature rise when the heat radiation is insufficient.
The operation temperature is set at radiation Fin temperature 175(Typ.). At this temperature or over the bias is
interrupted to prevent the destruction of IC.
UTC TA8229
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
4
QW-R107-028,A

3. Input stage
The input circuit of this IC is as shown in Fig.2.
PNP T
r
: Q1 is provided in the input circuit so as to make its usage possible without the input coupling capacitor.
However, at pin
11
and
12
, max 60 mV offset voltage is produced.
Application after checking volume slide noise is recommended.
For cutting the volume slide noise, insert the input capacitor: C
IN
in series to interrupt the DC component.
3/ 5
INPUT
30k
30k
OUTPUT
To DRIVER
45
To BIAS
NF
R
f
Fig. 2
+
-
47F
Q3
Q2
Q1
GND
C
IN
+
-
11/12
14/15
10/13

4. Oscillation preventive measures
For oscillation preventive capacitor C6 and C7 between the output terminal and GND, it is recommended to use
polyester film capacitor having good characteristics for temperature and for high frequency.
Since the characteristics of the capacitor is liable to be influenced by the temperature, use this capacitor after the
temperature test to check the oscillation allowance.
In addition, as the position of the electrolytic capacitor has a remarkable influence on the oscillation, connect C10
to V
CC
at the nearest possible position from power GND.
At using this application with the voltage gin reduced, oscillation is liable to be produced. Apply the capacitor after
checking enough for its capacity, type and mounting position.
(*) As the oscillation allowance varies according to the printed pattern layout, the standard printed board of
TOSHIBA is recommended to be referred to design it.

5. Power ON/OFF switch
There is power ON/OFF switch at pin. However, output power is changed by pin supply voltage when pin
supply voltage is not same pin supply voltage, after referring to attached date, select pin supply voltage.

6. Input voltage
When the excessive signal is input, turning-up is produced in the clip waveform.
The turning-up point is V
in
= 300mV
rms
(Typ.): V
CC
= 9V, R
L
= 4, f = 1kHz: Enough care must be taken for this
phenomenon.




UTC TA8229
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
5
QW-R107-028,A
TEST CIRCUIT
+
-
14
15
7
4
8
1
SW1
V
CC2
B.S.1
C11 (*2)
100F
IN1
NF1
45
30k
OUT1
+
-
+
-
1000F
C10
V
CC1
100F
C4
C8
C6
Ch-1
+
-
+
-
1000F
0.15F
10
5
+
-
C1
120
IN-1
R
f1
47F
RIPPLE
+
-
C3
47F
(*1)C
IN
IN2
NF2
45
+
-
C2
47F
120
Pre-GND1.
9
+
-
(*1)C
IN
11
+
-
IN-2
+
-
12
BIAS CIRCUIT
THERMAL SHUT
DOWN PROTECTION
CIRCUIT
Ch-2
OUT2
30k
Pre-GND2.
pin : NC
2
C9
+
-
1000F
0.15F
C7
R
L
R
L
OUT-1
OUT-2
6
100F
C5
+
-
B.S.2
3
Power-GND
13


(*1) This IC can be used without coupling capacitor (C
IN
).
If volume slide noise occurred by input offset voltage is undesirable, it needs to use the capacitor (C
IN
).
(*2) The condenser between the pin and the GND (C11) is for reducing POP noise when the power ON/OFF
switch (SW1) is set to ON/OFF.