HFBR-0528 Avago Technologies US Inc., HFBR-0528 Datasheet - Page 3

• Manufacturer Part Number: HFBR-0528
• Description: KIT EVAL FIBER OPTIC 10MBD
• Manufacturer: Avago Technologies US Inc.

Specifications of HFBR-0528

• Main Purpose: Interface, Fiber Optics
• Embedded: No
• Utilized Ic / Part: HFBR-1528, HFBR-2528
• Primary Attributes: 10MBd, Communication up to 50m using 1mm POF
• Secondary Attributes: Crimpless Connectors
• Silicon Core Number: HFBR-1528, HFBR-2528
• Kit Contents: TX/RX Mods, Cable, Pol Kit, SW, Pwr. Sup
• Silicon Family Name: Versatile Link
• Features: Fiber Optic Transmitter And Receiver
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 516-2144; HFBR-0528

5510-2
II. Product Description
1. Housing and optical port
The Versatile Link family has been used successfully in
many different industrial applications based on plastic
fibers. Users have the benefit of a reliable system that is
easy to install in the field. The compact package is made
of a flame retardant (UL V-0) material in a standard, six-
pin DIP. Transmitters or receivers can be stacked togeth-
er, creating duplex optical ports that save printed circuit
board space and avoid fault connections. The conduc-
tive housing of the HFBR-2528Z receiver provides an ex-
cellent EMI shield. The color-coded packages eliminate
confusion between transmitters and receivers. A plug
protects the optical port during auto-insertion and sol-
dering.
Figure 2. Package Construction.
Figure 3. Connector Alignment to Transmitter LED or Receiver IC.
The Versatile Link package uses an active alignment sys-
tem to ensure proper coupling between the fiber and
the optoelectronic converter. Figure 3 illustrates how the
alignment system operates. The precision-molded lens
on the insert is located at the bottom of a depression in
the shape of a truncated cone. The connector is inserted
into the package; the jaws of the housing force the bev-
elled end of the connector into the cone-shaped depres-
sion. This accurately centers the fiber directly above the
molded lens on the insert and ensures efficient, reliable
and repeatable connections.
3
5510-4
CONNECTOR
FIBER
INSERT
IC DIE
LENS
LEAD FRAME
Figure 4. Typical Transmitter Output Power vs. Drive Current.
2. Transmitter Technology
The new HFBR-528Z transmitter uses a high quantum
efficiency LED based on a new Avago Technologies AlIn-
GaP technology. At a 60 mA drive current, the coupled
power into a  mm POF is typically -3 dBm, a 6 dB im-
provement over previously used transmitters. With a
center wavelength of 650 nm at room temperature, the
transmitter is in the minimum attenuation window of
the POF. Typical link distances of 00 m with low-cost
plastic fibers are now a reality. When using the 200 µm
HCS fiber link, 500 m distances are possible. In addition
to the higher coupled power, the optical rise and fall
times have become much faster, allowing much simpler
LED drive circuits without the need for peaking and pre-
biasing for data rates of 0 MBd.
3. Receiver Technology
The new HFBR-2528Z receiver with its TTL/CMOS-com-
patible output is specified for data rates from dc to 0
MBd NRZ (non-return to zero). It has a sensitivity of -2
dBm peak with  mm POF, or a sensitivity of -23 dBm peak
with 200 HCS
low to high) and t
tributed to achieve pulse-width distortion (PWD) of less
than ±30 ns over a large input power range. As a result,
LED drive current adjustments for different link lengths
and fiber types are unnecessary.
-10
-15
-20
-25
-30
-35
-5
5
0
1
2
I
200/230 HCS
f
-TRANSMITTER DRIVE CURRENT (mA)
3
1 mm POF
®
fiber. Propagation delay times t
5
PHL
10
(output high to low) are equally dis-
20 30
50
100
PLH
(output