HFBR-5208FMZ Avago Technologies US Inc., HFBR-5208FMZ Datasheet - Page 4

• Manufacturer Part Number: HFBR-5208FMZ
• Description: TXRX 1X9 622MB/S ST METAL HOUSE
• Manufacturer: Avago Technologies US Inc.

Specifications of HFBR-5208FMZ

• Applications: General Purpose
• Data Rate: 622Mbps
• Wavelength: 1300nm
• Voltage - Supply: 4.75 V ~ 5.25 V
• Connector Type: SC
• Mounting Type: Through Hole
• Data Rate Max: 0.622Gbps
• Supply Voltage: 5V
• Wavelength Typ: 1300nm
• Peak Reflow Compatible (260 C): Yes
• Leaded Process Compatible: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Maintain a solid, low inductance ground plane for returning
signal currents to the power supply. Multilayer plane printed
circuit board is best for distribution of V
currents, forming transmission lines and shielding. Also, it
is important to suppress noise from influencing the fiber-
optic transceiver per-formance, especially the receiver
circuit. Proper power supply filtering of V
ceiver is accomplished by using the recommended sepa-
rate filter circuits shown in Figure 4. These filter circuits
suppress V
a broad frequency range. This prevents receiver sensitiv-
ity degradation . It is recommended that surface-mount
components be used. Use tantalum capacitors for the 10
μF capacitors and monolithic, ceramic bypass capacitors
for the 0.1 μF capacitors. Also, it is recommended that a
surface-mount coil inductor of 1 μH be used. Ferrite beads
can be used to replace the coil inductors when using
quieter V
over a ferrite bead to provide low-frequency noise filtering
as well. Coils with a low, series dc resistance (<0.7 ohms)
Figure 4. Recommended Circuit Schematic for dc Coupling (at +5 V) between Optical Transceiver and Physical Layer IC
4
TERMINATION
AT PHY
DEVICE
INPUTS
CC
MOUNTING POST
NO INTERNAL CONNECTION
CC
V
supplies, but a coil inductor is recom mended
Rx
R6
EER
1
noise of 100 mV peak-to-peak or less over
RD
R5
RD
2
V
CC
C6
RD
RD
R7
3
R8
SD
SD
4
HFBR-5208xxxZ
C7
TOP VIEW
R10
R9
C1
TRANSCEIVER
CC
V
AT V
C3
Rx
V
CCR
5
, returning ground
CC
L1
V
FILTER
CC
CC
CC
PINS
V
for this trans-
Tx
NO INTERNAL CONNECTION
CCT
6
C4
L2
C2
TD
7
TD
MOUNTING POST
TERMINATION
AT TRANSCEIVER
INPUTS
R1
TD
R2
8
V
CC
and high, self-resonating frequency are recommended. All
power supply components need to be placed physically
next to the V
good, uniform ground plane with a minimum number of
holes to provide a low-inductance ground current return
path for the signal and power supply currents.
Although the front mounting posts make contact with the
metallized housing, these posts should not be relied upon to
provide adequate electrical connection to the plated housing.
It is recommended to either connect these front posts to
chassis ground or allow them to remain unconnected. These
front posts should not be connected to signal ground.
Figure 5 shows the recommended board layout pattern.
In addition to these recommendations, Avago Technologies
Application Engineering staff is available for consulting
on best layout practices with various vendors’ serializer/
deserializer, clock recovery/generation integrated circuits.
V
Tx
C5
R3
EET
9
R4
TD
CC
pins of the receiver and transmitter. Use a
NOTES:
THE SPLIT-LOAD TERMINATIONS FOR PECL SIGNALS
NEED TO BE LOCATED AT THE INPUT OF DEVICES
RECEIVING THOSE PECL SIGNALS. RECOMMEND
MULTI-LAYER PRINTED CIRCUIT BOARD WITH 50 OHM
MICROSTRIP OR STRIPLINE SIGNAL PATHS BE USED.
R1 = R4 = R6 = R8 = R10 = 130 OHMS.
R2 = R3 = R5 = R7 = R9 = 82 OHMS.
C1 = C2 = C3 = C5 = C6 = 0.1 F.
C4 = C7 = 10 F.
L1 = L2 = 1 H COIL OR FERRITE INDUCTOR
(see text comments).