AFCT-5943GZ Avago Technologies US Inc., AFCT-5943GZ Datasheet - Page 7

• Manufacturer Part Number: AFCT-5943GZ
• Description: Fiber Optic Transceiver,MODULE
• Manufacturer: Avago Technologies US Inc.
• Series: METRAKr

Specifications of AFCT-5943GZ

• Data Rate: 2.7Gbps
• Wavelength: 1300nm
• Applications: General Purpose
• Voltage - Supply: 3.1 V ~ 3.5 V
• Connector Type: LC Duplex
• Mounting Type: Through Hole
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Application Information
The Applications Engineering Group at Avago Tech-
nologies is available to assist you with technical under-
standing and design trade-offs associated with these
transceivers. You can contact them through your Avago
Technologies sales representative.
The following information is provided to answer some
of the most common questions about the use of the
parts.
Figure 6. Recommended Interface Circuit
T
7
Note:
Note A:
Note B:
DIS
T
R
X
X
(LVTTL)
C1 = C2 = C3 = 10 nF or 100 nF
TD+, TD- INPUTS ARE INTERNALLY TERMINATED AND AC COUPLED.
RD+, RD- OUTPUTS ARE INTERNALLY BIASED AND AC COUPLED.
CIRCUIT ASSUMES OPEN EMITTER OUTPUT.
CIRCUIT ASSUMES HIGH IMPENDANCE INTERNAL BIAS @ V
10
1
9
2
3
8
7
4
6
5
CC
- 1.3 V.
C2
C1
10 µF
10 µF
Optical Power Budget and Link Penalties
The worst-case Optical Power Budget (OPB) in dB for a
fiber-optic link is determined by the difference between
the minimum transmitter output optical power (dBm
avg) and the lowest receiver sensitivity (dBm avg). This
OPB provides the necessary optical signal range to es-
tablish a working fiber-optic link. The OPB is allocated
for the fiber-optic cable length and the corresponding
link penalties. For proper link performance, all penalties
that affect the link performance must be accounted for
within the link optical power budget.
Electrical and Mechanical Interface
Recommended Circuit
Figure 6 shows the recommended interface for deploy-
ing the Avago Technologies transceivers in a +3.3 V
system.
1 µH
1 µH
Z = 50 Ω
Z = 50 Ω
Z = 50 Ω
Z = 50 Ω
V
CC
(+3.3 V)
C3
130 Ω
100 Ω
130 Ω
TD-
TD+
RD+
RD-
SD
LVTTL
V
CC
V
(+3.3 V)
CC
(+3.3 V)
NOTE A
NOTE B