MAX3710 Datasheet, PDF (24/58 Pages) Maxim Integrated Products – 125Mbps to 2.5Gbps Integrated Limiting Amplifier/Burst Mode Laser Driver with Dual-Loop Power Control

MAX3710
125Mbps to 2.5Gbps, Integrated Limiting Amplifier/
Burst Mode Laser Driver with Dual-Loop
Power Control
Table 1. Circuit Response to Single-Point Faults
PIN NAME
SHORT TO V_CC
SHORT TO GND
1
FAULT
No effect, but open-drain nMOS
output life can be stressed (Note 1)
No effect (Note 1)
OPEN
No effect (Note 1)
Tx output is off if DIS_POL = 1
2 DISABLE (default)
No effect if DIS_POL = 0
No effect if DIS_POL = 1 (default)
Tx output is off if DIS_POL = 0
(Note 1)
Tx output is off if DIS_POL = 1
(default)
No effect if DIS_POL = 0
3
CSEL No effect (Note 1)
No effect (Note 1)
No effect (Note 1)
4 ROUT+ No effect (Note 1)
No effect (Note 1)
No effect (Note 1)
5
ROUT- No effect (Note 1)
No effect (Note 1)
No effect (Note 1)
6
SCL No effect (Note 1)
No effect (Note 1)
No effect (Note 1)
7
V_CCD No effect
POR on
8
SDA
No effect, but open-drain nMOS
output life can be stressed (Note 1)
No effect (Note 1)
POR on
No effect (Note 1)
9
BEN+ No effect
10
BEN- No effect
No effect
No effect
No effect
No effect
11
TIN+ TXINLOS flag asserted
TXINLOS flag is asserted
No effect depending on TIN-
amplitude
12
TIN- TXINLOS flag asserted
TXINLOS flag is asserted
No effect depending on TIN+
amplitude
13
LPD
No effect, but output device life can No effect, but output device life
be stressed
can be stressed
No effect (Note 1)
14
TOUT Laser diode is off
FAULT asserted, laser power
exceeds programmed value
FAULT asserted
15
IOUT No effect
FAULT asserted
FAULT asserted
16
V_CCTO No effect
LVFLAG flag asserted, laser
diode is off
LVFLAG asserted, laser diode
is off
17 MDREF No effect
No effect
No effect
18
MDIN
Output current limited by
IBIASMAX[7:0] and IMODMAX[7:0]
FMD flag asserted
Output current limited by
IBIASMAX[7:0] and IMODMAX[7:0]
19 BMON No effect
No effect (Note 1)
No effect
20
V_CCX No effect
Board supply collapsed, POR on No effect (Note 3)—Redundant
(Note 2)
path
21
RIN- No effect
No effect
No effect
22
RIN+ No effect
No effect
No effect
23
V_CCX No effect
Board supply collapsed, POR on No effect (Note 3)—Redundant
(Note 2)
path
24
LOS
No effect, but open-drain nMOS
output life can be stressed
No effect
No effect
—
EP
POR on, I/O device life can be
stressed (Note 2)
No effect
POR on
Note 1: Normal—Does not affect laser power.
Note 2: Supply-shorted current is assumed to be primarily on the circuit board (outside this device) and the main supply is col-
lapsed by the short.
Note 3: Normal in functionality, but performance could be affected.
Warning: Shorted to V_CC or shorted to ground on some pins can violate the Absolute Maximum Ratings.
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