M02094-12 Datasheet, PDF (19/46 Pages) M/A-COM Technology Solutions, Inc. – EPON FTTH modules

M02094-12
3.3 or 5 Volt VCSEL/FP Laser Driver IC for Applications to 2 Gbps
Rev V5
Table 2-1. Pin Definitions
Pin Number Pin Name
Pin equivalent load
V_CC
IBOUT_CA
(CC_SEL = low)
IBOUT_CA
Function
Laser bias current output for common anode lasers (CC_SEL must be low).
Connect directly to laser cathode or at higher bit rates through a ferrite or a resistor to
isolate the capacitance of this pin from the modulation drive, (~ 6pF).
Maintain a voltage at least 0.7V above GND at this pin
14
V_CC
SGND (CC_{SEL SGND}
= high)
Switched ground connection for common cathode lasers (CC_SEL must be high).
Provides redundant shutdown during a disable or fault condition. This switch is disabled
during common anode operation.
V_CC
15
GND_O
GND₀
Ground for output stage. May be connected directly to circuit board ground. At high bit
rates (>2Gb/s) an optional inductor or ferrite may be added to reduce switching
transients.
19
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