
M
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7
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MAX3930
PAD
MAX3931/
MAX3932
PAD
NAME
FUNCTION
1, 5, 9, 12,
22, 23, 28,
29
1, 3, 5, 7,
9, 10, 12,
22, 23, 28,
29
V
CC
Power-Supply Voltage (V
CC
- V
EE
= 5V). All pads must be connected to V
CC
.
2
3
4
6
7
8
2
—
4
6
—
8
DATA+
V
TT
DATA-
CLK+
V
TT
CLK-
Noninverting Data Input. CML with on-chip termination resistor.
Terminating Voltage for Data Inputs
Inverting Data Input. CML with on-chip termination resistor.
Noninverting Clock Input for Data Retiming. CML with on-chip termination resistor.
Terminating Voltage for Clock Inputs
Inverting Clock Input for Data Retiming. CML with on-chip termination resistor.
10, 11, 17,
18, 21, 32,
35, 36, 37
11, 17, 18,
19, 32, 35,
36, 37
V
EE
Power-Supply Voltage (V
CC
- V
EE
= 5V)
13
13
RTEN
TTL/CMOS Data Retiming Input. Low for latched data, high for direct data. Internal
100k
pullup to V
CC
.
14
14
PWC+
Positive Input for Modulation Pulse-Width Adjustment. Connected to ground through
R
PWC
.
15
15
PWC-
Negative Input for Modulation Pulse-Width Adjustment. Connected to ground
through R
PWC
.
16
16
MODEN
TTL/CMOS Modulation Enable Input. Low for normal operation, high to switch
modulation output off. Internal 100k
pullup to V
CC
.
Modulation Current Monitor (V
MODMON
- V
EE
) / R
MOD
= I
MOD
Modulation Current Set. Connected to the output of the external operational
amplifier (see
Design Procedure
).
19
20
MODMON
20
21
MODSET
24, 27
24, 27
MODN2,
MODN1
Complementary Laser Modulation Current Outputs. Connect to V
CC
.
25, 26
25, 26
MOD2,
MOD1
Laser Modulation Current Outputs
30
31
30
31
BIAS
N.C.
Laser Bias Current Output
No Connection. Leave unconnected.
33
33
BIASSET
Bias Current Set. Connected to the output of the external operational amplifier (see
Design Procedure
).
34
34
BIASMON
Bias Current Monitor (V
BIASMON
- V
EE
) / R
BIAS
= I
BIAS