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參數(shù)資料
| 型號(hào)： | AFCT-5942AGZ |
| 元件分類： | 光收發(fā) |
| 英文描述： | FIBER OPTIC TRANSCEIVER, 1260-1570nm, 2488Mbps(Tx), 2488Mbps(Rx), BOARD/PANEL MOUNT, DIP, LC CONNECTOR |
| 封裝： | ROHS COMPLIANT, DIP-20 |
| 文件頁(yè)數(shù)： | 15/18頁(yè) |
| 文件大?。?/td> | 557K |
| 代理商： | AFCT-5942AGZ |
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Pin Descriptions:
Pin 1 Photo Detector Bias, VpdR:
This pin enables monitoring of photo detector bias cur-
rent. The pin should either be connected directly to V
C-
CRX, or to VCCRX through a resistor for monitoring photo
detector bias current.
Pins 2, 3, 6 Receiver Signal Ground V
EE RX:
Directly connect these pins to the receiver ground plane.
Pins 4, 5 DO NOT CONNECT
Pin 7 Receiver Power Supply V
CC RX:
Provide +3.3 V dc via the recommended receiver power
supply filter circuit. Locate the power supply filter cir-
cuit as close as possible to the V
CC RX pin. Note: the filter
circuit should not cause V
CC to drop below minimum
specification.
Pin 8 Signal Detect SD:
Normal optical input levels to the receiver result in a
logic “1” output.
Low optical input levels to the receiver result in a logic
“0” output.
This Signal Detect output can be used to drive a TTL in-
put on an upstream circuit, such as Signal Detect input or
Loss of Signal-bar.
Pin 9 Receiver Data Out Bar RD-:
PECL logic family. Output internally biased and ac cou-
pled.
Pin 10 Receiver Data Out RD+:
PECL logic family. Output internally biased and ac cou-
pled.
Pin 11 Transmitter Power Supply V
CC TX:
Provide +3.3 V dc via the recommended transmitter
power supply filter circuit. Locate the power supply filter
circuit as close as possible to the V
CC TX pin.
Pins 12, 16 Transmitter Signal Ground V
EE TX:
Directly connect these pins to the transmitter signal
ground plane.
Pin 13 Transmitter Disable T
DIS:
Optional feature, connect this pin to +3.3 V TTL logic high
“1” to disable module. To enable module connect to TTL
logic low “0”.
Pin 14 Transmitter Data In TD+:
PECL logic family. Internal terminations are provided (Ter-
minations, ac coupling).
Pin 15 Transmitter Data In Bar TD-:
Internal terminations are provided (Terminations, ac cou-
pling).
Pin 17 Laser Diode Bias Current Monitor - Negative End B
MON–
The laser diode bias current is accessible by measuring
the differential voltage developed across pins 17 and 18.
Pin 18 Laser Diode Bias Current Monitor - Positive End B
MON+
See pin 17 description.
Pin 19 Laser Diode Optical Power Monitor - Negative End P
MON–
The back facet diode monitor current is accessible by mea-
suring the differential voltage developed across pins 19
and 20.
Pin 20 Laser Diode Optical Power Monitor - Positive End P
MON+
See pin 19 description.
Mounting Studs/Solder Posts
The two mounting studs are provided for transceiver
mechanical attachment to the circuit board. It is recom-
mended that the holes in the circuit board be connected
to chassis ground.
Connection Diagram
Figure 5. Pin Out Diagram (Top View)
LASER DIODE OPTICAL POWER MONITOR - POSITIVE END
LASER DIODE OPTICAL POWER MONITOR - NEGATIVE END
LASER DIODE BIAS CURRENT MONITOR - POSITIVE END
LASER DIODE BIAS CURRENT MONITOR - NEGATIVE END
TRANSMITTER SIGNAL GROUND
TRANSMITTER DATA IN BAR
TRANSMITTER DATA IN
TRANSMITTER DISABLE
TRANSMITTER SIGNAL GROUND
TRANSMITTER POWER SUPPLY
RX
TX
o
1
2
3
4
5
6
7
8
9
10
o
20
19
18
17
16
15
14
13
12
11
PHOTO DETECTOR BIAS
RECEIVER SIGNAL GROUND
NOT CONNECTED
RECEIVER SIGNAL GROUND
RECEIVER POWER SUPPLY
SIGNAL DETECT
RECEIVER DATA OUTPUT BAR
RECEIVER DATA OUTPUT
Top
View
Mounting Studs/
Solder Posts
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