參數(shù)資料
型號: LA7471M
元件分類: 音頻/視頻放大
英文描述: 2 CHANNEL, AUDIO PREAMPLIFIER, PQFP36
封裝: QFP-36
文件頁數(shù): 10/10頁
文件大?。?/td> 180K
代理商: LA7471M
No. 4488-9/10
LA7471M
Continued from preceding page.
Unit (resistance:
)
Pin No.
Function
Internal Circuit
DC Voltage
Description
30
34
31
32
33
35
EXT in
Mic VCC
Ripple filter
GND
Input select
CTL1
2.1 V
2.8 V
2.1 V
0
External microphone input
The input impedance is 75 k
.
Power supply for the internal microphone
This pin is used to exclude ripple from internal
circuits. Connect a capacitor and a resistor of 75 k
externally to exclude ripple.
Internal/external switch
Control pin used to determine stereo or monophonic
operation
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