HFBR-0564 Avago Technologies US Inc., HFBR-0564 Datasheet - Page 2

• Manufacturer Part Number: HFBR-0564
• Description: Fiber Optics, Evaluation Kit
• Manufacturer: Avago Technologies US Inc.

Specifications of HFBR-0564

• Silicon Manufacturer: Avago
• Silicon Core Number: HFBR-591xE
• Kit Application Type: Communication & Networking
• Application Sub Type: MT-RJ Gigabit Ethernet Transceiver
• Main Purpose: Interface, Ethernet
• Embedded: No
• Utilized Ic / Part: HFCT-591xE, HFBR-591xE
• Primary Attributes: MT-RJ Gigabit, Multimode and Singlemode Applications
• Secondary Attributes: MT-RJ Fiber Connector Interface
• Operating Voltage: 3.3 V
• Description/function: Fiber Optic Kit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: HFBR-591x, HFCT-591
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

2
The laser is designed to operate with
a 50% duty cycle or balanced signal,
for normal operation. Failure to
provide this may cause the optical
parameters to move out of speci-
fication. Extinction ratio and duty
cycle distortion may be affected. In
the absence of data the module will
emit a mean optical power within
the specified limit.
Optical Output
Figure
HFBR-591xE
waveform using the Gbe mask and
optical filter.
Figure
HFCT-591xE
waveform using the Gbe mask and
optical filter.
Power Supply Filtering
Good power supply filtering is
required for optimum transmitter per-
formance. The LC filtering technique
illustrated in the circuit diagram of
Figure 4 is recommended for the
user, when using separated trans-
mitter and receiver power supplies.
When using this filter arrangement,
supply noise greater than 100 mV
pk-pk, over a frequency range of
10 Hz to 1 MHz, can be tolerated
before the transmitter waveform
is compromised.
performance, the power supply
filter should be located as close as
possible to the supply pin of the
transceiver.
Transmitter Disable
In normal operation (transmit-
ter enabled), pin 8 should be left
open circuit. The transmitter can
be disabled by connecting pin 8 to
VCCT via a 500 W resistor. This input
pin requires a minimum of 50 µA for
it to operate.
1a
1b
transmitter
transmitter
shows
shows
For
a
a
optimum
output
output
typical
typical
Receiver
Supply Voltage
The transceiver modules require a
positive power supply in the range
of 3.14 V to 3.47 V. Care should be
taken to avoid supply transients
(see receiver ‘Power Supply Filtering’
section).
Figure 1a. Typical HFBR-591xE transmitter output showing Gbe mask at +25° C, +3.3 V
Figure 1b. Typical HFCT-591xE transmitter output showing Gbe mask at +25° C, +3.3 V
Power Supply Filtering
Good power supply filtering is
required for optimum receiver per-
formance. The LC filtering technique
illustrated in the circuit diagram of
Figure 4 is recommended. When
using this filter arrangement, supply
noise greater than 100 mV pk-pk,
over a frequency range of 10 Hz
to 1 MHz, can be tolerated before
a receiver sensitivity penalty of
1.0 dB occurs.