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參數(shù)資料
| 型號： | TA2152FL |
| 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)： | 14/18頁 |
| 文件大?。?/td> | 277K |
| 代理商： | TA2152FL |
TA2152FL
2003-03-26
5
Application Notes
(1) Beep function
In Power Mute Mode, the beep signal from the microcomputer or other controlling device is input on the
BEEP IN pin (pin 16). This signal is output as a current which flows to the load via the BEEP output pin (pin
7/24). The beep level is set to Vo = -50dBV (RL = 16 W (typ.) ). For the beep signal timing, please refer to
Figure 1.
(2) Low-cut compensation
For output-coupling type, the low-frequency range can be decreased using an output-coupling capacitor and a
load (fc = 45 Hz at C = 220 mF, R = 16 W). However, since the capacitor is connected between the IC’s output pin
(pin 1/6) and EQ pin (pin 2/5), the low-frequency gain of the power amplifier increases, enabling low-cut
compensation to be performed. For the response of capacitors of different values, please refer to
Figure 2.
PW SW
ON
OFF
MUTE SW
ON
OFF
BEEP
OUT
100 ms
OCL type
100 ms
10 ms
100 ms
200 ms
100 ms
10 ms
100 ms
Output-coupling type
Figure 1
Timing chart for beep and output signals
RES
- f
Frequency
f
(Hz)
R
e
sp
ons
e
(
d
B
)
-8
-6
-4
-2
0
2
4
20
50
100
200
500
1 k
2 k
No compensation
0.68
mF
0.47
mF
0.33
mF
0.22
mF
0.18
mF
Figure 2
Capacitor response
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