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BD4912 查看數據表(PDF) - ROHM Semiconductor

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BD4912 Datasheet PDF : 17 Pages
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zI/O Equivalent circuit diagrams
3 PIN (P.ANT), 4 PIN (P.CON)
Vcc1
0.29
100k
5k
P.ANT(3PIN)
P.CON4PIN
200k
TSD ON
GND
10k
1k
Fig.40
2, 5, 7, 9 PIN (ILM, AM, AUDIO, VDD)
Vcc
R1
PIN
R2
R3
GND
10k
1k
P IN
ILM 2PIN
AM 5PIN
AU D IO 7PIN
VDD(9PIN
Vcc
Vcc1
Vcc1
Vcc1
Vcc2
R 1[Ω ]
0.50
4.00
0.43
0.25
Fig.42
R 2[kΩ ]
448.5
445.4
437.7
381.3
R 3[kΩ ]
6 1 .9
8 0 .7
7 8 .5
125.0
11 PIN (SEL1)
SEL111PIN
1k
1k
122.7k
1k
35.4k
1k
41.9k
10k
GND
Fig.41
12 PIN (SEL2)
SEL2(12PIN)
GND
1k
122k
1k
78k
10k
1k
Fig.43
zTiming Chart
VCC1
VCC2
VDD
SEL1
ILM
P.C O M
P.A N T
SEL2
AUDIO
SW 5V
AM
Fig.44 Timing Chart
9/16

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