AFCT-5179CZ Avago Technologies US Inc., AFCT-5179CZ Datasheet - Page 4

• Manufacturer Part Number: AFCT-5179CZ
• Description: TXRX 125MBD DUPLEX BLUE SC 1X9
• Manufacturer: Avago Technologies US Inc.

Specifications of AFCT-5179CZ

• Applications: Ethernet
• Data Rate: 125MBd
• Wavelength: 1300nm
• Voltage - Supply: *
• Connector Type: SC
• Mounting Type: Through Hole
• Data Rate Max: 0.125Gbps
• Supply Voltage: 5V
• Wavelength Typ: 1300nm
• Leaded Process Compatible: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4
Transmitter Section
Design
The transmitter section, Figure 3, uses a Multiple Quan-
tum Well laser as its optical source. The package of this
laser is designed to allow repeatable coupling into
single mode fiber. In addition, this package has been
designed to be compliant with IEC 825 Class 1 and
CDRH Class I eye safety requirements. The optical out-
put is controlled by a custom IC which detects the laser
output via the monitor photodiode. This IC provides
both dc and ac current drive to the laser to ensure cor-
rect modulation, eye diagram and extinction ratio over
temperature, supply voltage and life.
PCB mounting
The AFCT-5179xZ has two solderable mounting studs,
Figures 5 and 6. These studs are not electrically con-
nected. The transceiver is designed for common
production processes. It may be wave soldered and
aqueous washed providing the process plug is in place.
Each process plug can only be used once during pro-
cessing, although with subsequent use, it can be used
as a dust cover.
Figure 3 - Simplified Transmitter Schematic
Figure 4 - Recommended Circuit Schematic
NOTES:
THE SPLIT-LOAD TERMINATIONS FOR ECL SIGNALS NEED TO BE LOCATED AT
PRINTED CIRCUIT BOARD WITH 50Ω MICROSTRIP SIGNAL PATHS BE USED.
R1 = R4 = R6 = R8 = R10 = 130 Ω
R2 = R3 = R5 = R7 = R9 = 82 Ω
C1 = C2 = 10 µF (see Figure 2)
C3 = C4 = C7 = C8 = 100 nF
C5 = C6 = 0.1 µF
L1 = L2 = 3.3 µH COIL OR FERRITE INDUCTOR.
DATA
DATA
THE INPUT OF DEVICES RECEIVING THOSE ECL SIGNALS. RECOMMEND 4-LAYER
TERMINATE
AT THE
DEVICE
INPUTS
R6
NO INTERNAL
CONNECTION
INPUT
V
PECL
EER
1
RD
R5
V
RD
CC
2
C6
R7
RD
RD
3
R8
SD
MODULATOR
R10
LASER
SD
4
C1
TOP VIEW
C3
TRANSCEIVER
C7
AT V cc PINS
V
V cc FILTER
R9
CCR
5
L1 L2
V
CC
V
CCT
6
C8
LASER BIAS
LASER BIAS
C4
CONTROL
C2
DRIVER
LASER
TD
7
TD
NO INTERNAL
CONNECTION
TERMINATION
TRANSCEIVER
R1
TD
R2
8
INPUTS
V
(rear facet monitor)
CC
AT
C5
PHOTODIODE
V
R3
EET
9
R4
TD