TA8229 Unisonic Technologies, TA8229 Datasheet - Page 4

• Manufacturer Part Number: TA8229
• Description: Low Frequency Power Amplifier - Unisonic Technologies
• Manufacturer: Unisonic Technologies

UTC TA8229
3. Input stage
4. Oscillation preventive measures
polyester film capacitor having good characteristics for temperature and for high frequency.
temperature test to check the oscillation allowance.
to V
checking enough for its capacity, type and mounting position.
TOSHIBA is recommended to be referred to design it.
5. Power ON/OFF switch
supply voltage is not same :pin supply voltage, after referring to attached date, select >pin supply voltage.
6. Input voltage
phenomenon.
UTC
The input circuit of this IC is as shown in Fig.2.
PNP T
However, at pin
Application after checking volume slide noise is recommended.
For cutting the volume slide noise, insert the input capacitor: C
For oscillation preventive capacitor C6 and C7 between the output terminal and GND, it is recommended to use
Since the characteristics of the capacitor is liable to be influenced by the temperature, use this capacitor after the
In addition, as the position of the electrolytic capacitor has a remarkable influence on the oscillation, connect C10
At using this application with the voltage gin reduced, oscillation is liable to be produced. Apply the capacitor after
(*) As the oscillation allowance varies according to the printed pattern layout, the standard printed board of
There is power ON/OFF switch at >pin. However, output power is changed by >pin supply voltage when >pin
When the excessive signal is input, turning-up is produced in the clip waveform.
The turning-up point is V
CC
at the nearest possible position from power GND.
r
: Q1 is provided in the input circuit so as to make its usage possible without the input coupling capacitor.
11
and
UNISONIC TECHNOLOGIES CO., LTD.
12
, max 60 mV offset voltage is produced.
in
= 300mV
-
C
LINEAR INTEGRATED CIRCUIT
IN
rms
11/12
14/15
(Typ.): V
INPUT
GND
30k
CC
= 9V, R
Q1
Fig. 2
L
Q2
= 4 , f = 1kHz: Enough care must be taken for this
IN
in series to interrupt the DC component.
Q3
NF
R
10/13
f
+
-
45
47µF
To DRIVER
To BIAS
OUTPUT
30k
3/ 5
QW-R107-028,A
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