C-127-2500-FDFB-SLC2 Datasheet, PDF (5/10 Pages) Source Photonics, Inc. – 2.5 Gbps Single Mode SFF LC Transceiver

2.5 Gbps Single Mode SFF LC Transceiver
C-1XX-2500(C)-FDFB-SLCX
TRANSMITTER
DRIVER
LASER
BIAS
PIN
TZ
AMP
POST
AMP
RECEIVER
TX_DIS ⁸
TX_GND ⁷
TX_D ₉
TX_D ₁₀
Vcc_TX 6
Vcc_RX ²
3
SD
RX_D ₄
RX_D ₅
RX_GND ¹
TTL logic level
Z=50�
TD +
Z=50�
TD -
See
Fig. 4A
See
Fig. 3
Z=50�
Z=50�
Note 1 Not1e
No te 1
Vcc= +3.3V
Serializer / De-Serializer
with LVPECL lnputs/Outputs
82Ω
82Ω
RD -
130Ω
RD +
130Ω
Figure 2.Recommended TRANSMIT and RECEIVE Data Terminations for SERDES with LVPECL I/Os.
Note 1. Consult SERDES manufacturer’s application information for biasing required for Tx outputs. Some serializer outputs
are internally biased and may not need external bias resistors.
Signal Detect
The C-1XX-2500(C)-FDFB-SLCX transceivers are equipped with LVTTL / LVPECL signal detect outputs. The standard LVTTL output eliminates
the need for a LVPECL to LVTTL level shifter in most in most applications.
R2
LVPECL
or
LVTTL Logic
R1
R: For LVTTL level R1=N.C., R2=N.C.
LVPECL level R1=82,R2=130
Figure 3: Signal Detect
Note:
C-1XX-2500-FDFB-SLCX with LVPECL SD output
C-1XX-2500C-FDFB-SLCX with LVTTL SD output
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5
LUMNDS851-Jul2005
rev. A.0