LA74303FN 查看數據表（PDF） - SANYO -> Panasonic
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LA74303FN Datasheet PDF : 18 Pages
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LA74303FN
LA74303FN Internal Equivalent Diagram and Recommended Circuit Diagram
MIC
0.01μF
MIC
MIC
IN
GND
0.01μF
0.47μF
18
17
16
15
14
13
SPK
VCCSP
3.3V
+
4.7μF
2.2kΩ
19
MIC VCC
VREF
20
CHARGE
Refer to table
below 1.
21
ALC
DET
+
-
For SW control,
refer to table below 2.
LPF
A
LPF1
B
C
LPF2
22
+-
23
SPK
GND
24
EVR
Mix ratio
+
1:1
MUTE
LOGIC
12
REC
OUT
11
A GND
10
0.1μF
9
PB IN
VCCA
3V
8
DATA
7
CLOCK
1
2
3
4
5
6
C.S
0.047μF
220kΩ
BEEP IN
0.01μF 0.1μF
STANDBY
CTL: LOW
LINE
OUT
10kΩ
Table 1: Logic of external capacitor charging circuit
SERIAL
No.2
ON
0
OFF
1
Initially “ON”
Table 2: LPF SW control logic
SERIAL
No.5
A
1
B
0
C
0
No.6
*
0
1
*) Don’t care.
No.A1181-9/18
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