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參數(shù)資料
| 型號： | TA2131FLG |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 0.008 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC24 |
| 封裝： | 5 X 5 MM, 0.50 MM PITCH, PLASTIC, QON-24 |
| 文件頁數(shù)： | 2/21頁 |
| 文件大?。?/td> | 437K |
| 代理商： | TA2131FLG |
TA2131FLG
2006-04-19
10
3.
Beep
Beep sound signals from microcomputer can be received by the beep input terminal (15-pin).
The PWA and PWB of the power amplifier during power mute are turned OFF, and the beep signal input
from BEEP-IN (15-pin) is output from the BEEP-OUT terminal (23/24-pin) as fixed current, after passing
through the converter and current amplification stage. Connecting this terminal to the headphone load
outputs the beep sound.
If the beep sound is not input, fix the BEEP-IN (15-pin) terminal to GND level.
4.
Power Switch
As long as the power switch is not connected to “H” level, the IC does not operate. If it malfunctions due
to external noise, however, it is recommended to connect a pull-down resistor externally (the power switch
is set to be highly sensitive).
60
10
0
20
40
30
100
300
1 k
3 k
10 k
30 k
100 k
VCC1 = 2.8 V
VCC2 = 1.2 V
Rg = 620
RL = 16
Vo = 22dBV
WIDE BAND
Output C
= 220 F
C
= 0.47 F
C
= 2.2 F
C
= 1 F
Vrefshort
f
(Hz)
CT
(d
B
)
Figure 6
Low-Pass Compensation Condenser and Crosstalk
CT – f
VCC
PW SW
(18-pin)
MT SW
(17-pin)
BEEP IN
(15-pin)
OFF
ON
OFF
100 ms
200 ms
20
15
24
23
IBEEP
ID
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