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参数资料
| 型号： | TA2157FN |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO24 |
| 封装： | SSOP-24 |
| 文件页数： | 8/14页 |
| 文件大小： | 182K |
| 代理商： | TA2157FN |
TA2157F/FN
2002-11-21
3
Pin Function
Pin
No.
Symbol
I/O
Function Description
Internal Circuit
1
VCC
3.3 V power supply pin
2
FNI
I
Main-beam amp input pin
3
FPI
I
Main-beam amp input pin
4
TPI
I
Sub-beam amp input pin
5
TNI
I
Sub-beam amp input pin
6
MDI
I
Monitor photo diode amp input pin
7
LDO
O
Laser diode amp output pin
8
SEL
I
APC circuit ON/OFF control signal, laser diode
(LDO) control signal input or bottom/peak
detection frequency change pin.
SEL
APC
Circuit
LDO
GND
OFF
Connected to VCC
through 1 k
W resistor
HiZ
ON
Control signal output
VCC
ON
Control signal output
2
3
22 k
W
1 k
W
120
m
A
VC
4
5
100
W
2
m
A
2
m
A
2
m
A
VC
6
1.75 k
W
4
m
A
14 k
W
2
k
W
20
m
A
4
m
A
7
1 k
W
50 k
W
ON/OFF
ON: LD-OFF
OFF: LD-ON
8
30 k
W
80
m
A
30
k
W
40
k
W
50
k
W
40
k
W
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