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參數(shù)資料
| 型號(hào)： | TA2170FLG |
| 廠商： | Toshiba Corporation |
| 英文描述： | Low Current Consumption Headphone Amplifier (Built-in Input Selector) |
| 中文描述： | 低電流消耗耳機(jī)放大器（內(nèi)置輸入選擇） |
| 文件頁(yè)數(shù)： | 7/13頁(yè) |
| 文件大?。?/td> | 235K |
| 代理商： | TA2170FLG |
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TA2170FLG
2006-04-19
7
3. Adjustment of DC output voltage
Perform the following with the OUT ADJ pin (pin 13) using the power supply of V
CC1
and V
CC2
:
If a boost voltage is applied to V
CC1
, V
CC2
is connected to a battery and the difference between V
CC1
and V
CC2
is greater than or equal to 0.7 V, short pins 13 and 14 together. In this case the DC output
voltage will be as follows:
2
V
CC2
.
If the difference between V
CC1
and V
CC2
is less than 0.7 V, or if V
CC1
and V
CC2
are connected to the
same power supply, leave pin 13 open.
In these cases, the DC output voltage will be
2
V
0.7
V
CC2
.
4. Switch
(1)
Timing chart
Refer to Figure 2 for the IC timing chart.
(2)
PW SW
The device is ON when this pin is set to High. To prevent the IC being turned ON by external noise, it
is necessary to connect an external pull-down resistor to the PW SW pin. The pin is highly sensitive.
Mute smoothing
Ensure that the smoothing resistor used for the mute pin is 100 k
or less. The switch circuit will
not operate normally if the value is greater than this.
(3)
200 ms
100 ms
OFF
ON
ON
OFF
ON
OFF
OUT
MUTE
ALL MUTE
PW SW
Figure 2. Timing Chart
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