M02069 Datasheet, PDF (17/44 Pages) M/A-COM Technology Solutions, Inc. – 3.3 or 5 Volt VCSEL/FP Laser Driver IC for Applications to 4.3 Gbps

Functional Description
Table 2-1.
Pin
Number
Pin Definitions
Pin Name
Pin equivalent load
V_CC
V_CC3
Function
Switched VCC. Supplies laser current for common anode designs. (CC_SEL must
be LOW).
Provides redundant shutdown during a disable or fault condition. This switch is
disabled during common cathode operation.
SV_CC (CC_SEL =
low)
SV_CC
18
V_CC
V_CC3
Laser bias current output for common cathode laser designs (CC_SEL must be
high).
Connect directly to laser anode or at higher bit rates through a ferrite or a
resistor to isolate the capacitance of this pin from the modulation drive.
Maintain a voltage of < 2.5V at this pin.
IBOUT_CC
(CC_SEL =
high)
IBOUT _{C C}
12 kΩ
Laser select input.
V_CC
V_{CC3 When high, common cathode operation is selected; IBOUTCC and SGND are}
functional and internal 50Ω output terminations are switched in at the
modulation outputs OUT+ and OUT-.
When low or floating, common anode operation is selected; IBOUT_CA and SV_CC
are functional and the 50Ω internal termination resistors at OUT+ and OUT- are
disconnected.
19
CC_SEL
CC _SEL
24 kΩ
48 kΩ
02069-DSH-001-D
Mindspeed Technologies™
17
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