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| ONET4291VA Datasheet, PDF (15/20 Pages) Texas Instruments – 1 GBPS TO 4.25 GBPS MULTI-RATE VCSEL DRIVER | |||
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ONET4291VA
www.ti.com
APPLICATION INFORMATION
SLLS674 â SEPTEMBER 2005
Figure 17 shows a typical application circuit using the ONET4291VA with a common cathode VCSEL connected
to ground.
The VCSEL driver is controlled via the 2-wire interface SDA/SCK by a microprocessor.
In a typical application, the FLT, MONB, MONP, and TS outputs are connected to the microcontroller for
transceiver management purposes.
The component values in Figure 17 are typical examples and may be varied according to the intended
application.
DIS
SDK
SDA
TS
RZTC
30 kâ¦
DIN+
DINâ
C1
0.1 µF
C2
0.1 µF
VCC
DIN+
DINâ
VCC
FLT
ONET4291VA
20-Lead QFN
GND
MODâ
MOD+
GND
BIAS
C3
0.1 µF
50 â¦
C4
0.1 µF
L1
BLM15HG102SN1
VCSEL
Laserdiode
VCC
RMONB
1 kâ¦
RMONP
10 kâ¦
C5
0.01 µF
Monitor
Photodiode
FLT
MONP
MONB
Figure 17. Basic Application Circuit With a Common Cathode VCSEL
S0100-01
15
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