![](/html/SANYO/437036/page4.png)
LA74309TT
Pin Functions
PIN No.
1
2
Pin Name
GND
ALC IN
DC voltage
0V
1.60V
AC voltage
Output level=-49dBV
(At MIC IN=-69dBV)
Functions
Ground
ALC input
Maximum input level
=-10dBV
3
STANDBY
CTL
Standby control
Over 2V: Standby OFF
4
MIC OUT
1.60V
Output level=-49dBV MIC output
(At MIC IN=-69dBV)
5
MIC IN
1.60V
Standard input level MIC input
=-69dBV
Maximum input level
=-30dBV
6
VREF
2.30V
MIC VCC and ripple rejection pin
for VREFL
7
INT MIC
2.30V
VCC
MIC power supply
Equivalent Circuit
VCCA (=3.0V)
500Ω
2
50kΩ
VREFL
45kΩ
3
40kΩ
VCCA (=3.0V)
500Ω 9.7kΩ
4
1kΩ
VREFL
VCCA (=3.0V)
500Ω
5
70kΩ
VREFL
VCCA (=3.0V)
500Ω
500Ω
6
200
kΩ
500Ω
VCCA (=3.0V)
2.2kΩ
7
23kΩ
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