參數(shù)資料
型號: AN2904FHQ
英文描述: AN2904FHQ - Sound input/output interface IC for digital still camera
中文描述: AN2904FHQ -聲音輸入/輸出的數(shù)碼相機(jī)接口IC
文件頁數(shù): 15/18頁
文件大?。?/td> 157K
代理商: AN2904FHQ
ICs for Digital Still Camera
AN2904FHQ
15
I
Usage Notes
About the power-on order, and the pop noise at SP power source on/off
At this time, make power save work, interlocking the SP power save of pin 47 with V
CC-SP
, or by applying high
level to that pin earlier than V
CC-SP
.
As mentioned above, apply V
CC-SP
at the time of power on, and remove V
CC-SP
lastly at the power off. This is because
an SP power save circuit uses V
CC-SP
-system power source. This operation prevents the speaker from generating a pop
noise at turning the power on/off.
100 ms or more
4.1 V
V
CC-SP
V
CCH
V
CC
0.0 V
4.9 V
3.1 V
0.0 V
100 ms or more
I
Application Notes
Electronic volume control curve
External resistor vs. microphone gain
0
0
Electoronic volume control voltage (V)
E
90
80
70
60
50
40
30
20
10
100
1
2
3
22
29
0
External resistance between pin 37 and pin 38 (k
)
M
23
24
25
26
27
28
20
40
60
80
100
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