SFP Laser Controller and
Diagnostic IC
Pin Description
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
PIN NAME
RSELOUT
SDA
SCL
INTX-F
INLOS
IN1
N.C.
N.C.
GND
TX-D
RSEL
MON3N
MON3P
MON2
N.C.
MON1N
MON1P
DAC1
GND
DAC0
V CC
N.C.
GND
FETG
TX-F
RX-LOS
OUT1
V CC
DESCRIPTION
Open-Drain Rate-Select Output
I 2 C Serial Data Input/Output
I 2 C Serial Clock Input
TX-F Input from External Device
Loss of Signal Input from External Device
Digital Input
No Connection
No Connection
Ground. All GND pins must be connected.
Transmit Disable Input. Places DAC0 and DAC1 in high-impedance state.
Rate Select Logic Input
Voltage Monitor Input, Low Side. Used typically for RSSI.
Voltage Monitor Input, High Side. Used typically for RSSI.
Voltage Monitor Input. Used typically for Transmit Power (TXP).
No Connection
Voltage Monitor Input, Low Side. Used typically for Bias Sense Current (IBIAS).
Voltage Monitor Input, High Side. Used typically for Bias Sense Current (IBIAS).
Lookup Table-Controlled Current Sink
Ground. All GND pins must be connected.
Lookup Table-Controlled Current Sink
Power Supply. All V CC pins must be connected.
No Connection
Ground. All GND pins must be connected.
Logic Output Driving External FET
Open-Drain Fault Output
Open-Drain Loss of Signal Output
Open-Drain Digital Output
Power Supply. All V CC pins must be connected.
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13
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