Description
SERCOS, an acronym for SErial Realtime COmmunications
Systems, is a standard digital interface for communica-
tion in industrial CNC applications. SERCOS is a European
(EN 61491) and international standard (IEC 61491). The
optical interface allows data rates of 2,4,8 and 16 MBd
and data transfer between numerical controls and drives
via ber-optic rings, with voltage isolation and noise im-
munity. The HFBR-1506AFZ and HFBR-2506AFZ products
have a guaranteed performance up to 16 MBd.
Features
RoHS-Compliant
Meets Industrial SERCOS 16MBd standard
SMA ports
650 nm wavelength
Metal housing and port
Speci ed for use with 1 mm POF and 200 μm HCS
DC - 16 MBd data rate
Applications
Industrial Control Data Links
Factory Automation Data Links
Voltage Isolation Applications
HFBR-1506AFZ/HFBR-2506AFZ
Full Metal Fiber Optic SMA Transmitters and Receivers
for 16 MBd SERCOS Applications
Data Sheet
Speci cations and content subject to change without prior noti cation.
2Speci cations and content subject to change without prior noti cation.
Table 1. Link Performance Speci cation
-40 °C to +85 °C unless otherwise noted.
Parameter Symbol Min Max Unit Condition Reference
Link distance with HFBR-1506AFZ/2506AFZ I 0.1
0.1
45
100
mm POF
HCS
Note 1, 2, 4, 6
Note 1, 3, 5, 6
Notes:
1. 60 mA nominal drive current.
2. POF HFBR-ExxyyyZ 0.23 dB/m worst case attenuation.
3. HCS Worst Case Attenuation is 10dB/km (0°Cto 70°C) and 12dB/km (-40°C to 85°C).
4. Including a 3 dB optical safety margin accounting for link service lifetime.
5. Including a 2 dB optical safety margin accounting for link service lifetime.
6. Signaling rate dc to 16 MBd.
CAUTION: The small junction size inherent in the design of these components increases the components’ susceptibility to damage from elec-
trostatic discharge (ESD). It is advised that normal static precautions be taken in handling and assembly of these components to prevent
damage and/or degradation which may be induced by ESD.
Recommended Chemicals for Cleaning/Degreasing
Alcohols: methyl, isopropyl, isobutyl.
Aliphatics: hexane, heptane.
Other: soap solution, naphtha.
Do not use partially halogenated hydrocarbons such as
1,1,1 trichloroethane, ketones such as MEK, acetone,
chloroform, ethyl acetate, methylene dichloride, phenol,
methylene chloride or N-methylpyrolldone. Also, Avago
Technologies does not recommend the use of cleaners
that use halogenated hydrocarbons because of their
potential environmental harm.
Package Information
The RoHS-compliant transmitters and receivers are
housed in a metal package that is high strength. Both
the transmitter and receiver are built with metal hous-
ings and optical ports for excellence air discharge (ESD)
performance. The package is designed for auto insertion
and wave soldering so it is ideal for high volume produc-
tion applications.
Handling and Design Information
When soldering, it is advisable to leave the protective
cap on the unit to keep the optics clean. Good system
performance requires clean port optics and cable ferrules
to avoid obstructing the optical path. Clean compressed
air often is su cient to remove particles of dirt; methanol
on a cotton swab also works well.
3Speci cations and content subject to change without prior noti cation.
HFBR-1506AFZ Transmitter
The HFBR-1506AFZ transmitter incoporates a 650nm LED
in a metal housing. The high light output power enables
the use of both plastic optical ber (POF) and Hard Clad
Silica (HCS). This transmitter can operate up to 16MBd
using a simple driver circuit. The HFBR-1506AFZ is com-
patible with SMA connectors.
Figure 1.
PIN FUNCTION
1
4
5
6
7
8
CONNECTED TO PIN 4
CONNECTED TO PIN 1
NC
NC
CATHODE
ANODE
5
6
7
8
4
1
BOTTOM VIEW,
HFBR-1506AFZ
SEE NOTE 6
Absolute Maximum Ratings
Parameter Symbol Min Max Unit Notes
Storage and Operating Temperature TS, O-40 +85 °C
Peak Forward Input Current IF, PK 90 mA 1
Average Forward Input Current IF, AVG 60 mA
Reverse Input Voltage VR3V
Lead Soldering Cycle
Temp
Time
TSOL
TSOL
260
10
°C
s
2, 3
Notes:
1. For I F_PK > 60 mA, the duty factor must maintain I F_AVG <= 60 mA and pulse width <= 1 μs.
2. 1.6 mm below seating plane.
3. Moisture sensitivity level (MSL) is 3
Electrical Characteristics Table
-40 °C to +85 °C unless otherwise noted.
Parameter Symbol Min Typ Max Unit Condition Notes
Optical Power Temperature Coe cient PT/T-0.02 dB/°C Note 3
Forward Voltage VF1.8 2.1 2.65 V IF, dc = 60 mA See Figure 2
Forward Voltage Temperature Coe cient VF/T-1.8 mV/°C See Figure 2
Breakdown Voltage VBR 3.0 13 V IF, dc = -10 μA
Peak Emission Wavelength lPK 635 650 662 nm See Figure 4
Full Width Half Max FWHM 21 30 nm See Figure 4
Diode Capacitance CO60 pF VF = 0 V, f = 1 MHz
Thermal Resistance qJC 140 °C/W Notes 4, 5
Rise Time (10% to 90%) tr15 ns 10% to 90%
IF = 60 mA
See Figure 6
Fall Time (90% to 10%) tf15 ns See Figure 6
Notes:
3. Typical data are at +25 °C
4. Thermal resistance is measured with the transmitter coupled to a connector assembly and ber, and mounted on a printed circuit board.
5. To further reduce the thermal resistance, the cathode trace should be made as large as is consistent with good RF circuit design.
6. Pins 1 and 4 are for mounting and retaining purposes, but are electrically connected, pins 5 and 6 are electrically isolated. It is recommended
that pins 1, 4, 5 and 6 all be connected to ground to reduce coupling of elecrical noise.
4Speci cations and content subject to change without prior noti cation.
Peak Output Power
-40 °C to +85 °C unless otherwise noted.
Model Number Symbol Min Max Unit Condition Reference
HFBR-1506AFZ Pr -6.0
-18.0
-2.0
-10.0
dBm POF, IF, dc = 60 mA
HCS®, IF, dc = 60 mA
Note 7
Figure 3
Notes:
7. Optical power measured at the end of 1 meters of 1 mm diameter plastic or 200 μm hard/plastic clad silica optical ber with a large area detec-
tor.
Figure 2. Typical Forward Voltage vs Drive Cur-
rent
Figure 3. Typical Normalized Optical Power vs
Drive Current
Figure 4. Typical Normalized Optical Spectra
Figure 5. Recommended drive circuit according to SERCOS An17 (Ifnom ~ 35 mA)
2.5
1 10 100
IF,DO – TRANSMITTER DRIVE CURRENT – mA
V
F
– FORWARD VOLTAGE – V
2.3
2.1
1.9
1.7
1.5
-40 ˚C
0 ˚C
25 ˚C
70 ˚C
85 ˚C
10
1 10 100
I
F,DO
– TRANSMITTER DRIVE CURRENT – mA
P
T
– NORMALIZED OUTPUT POWER – dB
0
-10
-20
-30
-40
-40 ˚C
25 ˚C
85 ˚C
1.4
610 650 690
WAVELENGTH – nm
NORMALIZED SPECTRAL OUTPUT POWER
1.2
0.8
0.4
0.2
0
-40 ˚C
0 ˚C
630 670
0.6
1.0
25 ˚C
70 ˚C
85 ˚C
5Speci cations and content subject to change without prior noti cation.
HFBR-2506AFZ Receiver
The HFBR-2506AFZ receiver is housed in a metal pack-
age, consisting of a silicon PIN photodiode and digitizing
IC to produce a logic compatible output. The IC includes
a unique circuit to correct the pulse width distortion of
the rst bit after a long idle period. This enables opera-
tion from DC to 16MBd with low PWD for arbitrary data
patterns.
The receiver is a “push-pull” stage compatible with TTL
and CMOS logic. The HFBR-2506AFZ is compatible with
SMA connectors.
Figure 6.
Absolute Maximum Ratings
Parameter Symbol Min Max Unit Notes
Storage and Operating Temperature TS, O-40 +85 °C
Supply Voltage VCC -0.5 5.5 V
Average Output Current IO, AVG 16 mA
Output Power Dissipation POD 80 mW
Lead Soldering Cycle
Temp
Time
TSOL
TSOL
260
10
°C
s
1, 5
Electrical Characteristics Table
-40 °C to +85 °C, 4.75 V < VCC < 5.25 V, VP-P Noise < = 100 mV unless otherwise noted.
Parameter Symbol Min Typ Max Unit Condition Notes
Peak Input Power Level Logic HIGH PRH -42
-44
dBm 1 mm POF
200 μm HCS
2
Peak Input Power Level Logic LOW PRL -20
-22
-2
-10
dBm 1 mm POF
200 μm HCS
|PWD| < 19 ns
3
Supply Current ICC 19 45 mA VO = Open
High Level Output Voltage VOH 4.2 4.7 V IO = 40 μA
Low Level Output Voltage VOH 0.22 0.4 V IO = 1.6 mA
Pulse Width Distortion PWD -19 19 ns
Propagation Delay Time TP_HL or _LH 150 ns
Notes:
1. 1.6 mm below seating plane.
2. Typical data are at +25 °C, VCC = 5.0 V
3. BER <= 10E-9, includes a 10.8 dB margin below the receiver switching threshold level (signal to noise ratio =12)
4. Pins 1 and 4 are electrically connected to the metal housing and are also used for mounting and retaining purposes. It is recommended that
pins 1 and 4 to be connected to ground to maintain housing shield e ectiveness.
5. Moisture sensitivity level (MSL) is 3
PIN FUNCTION
1
4
5
6
7
8
CONNECTED TO PIN 4
CONNECTED TO PIN 1
NO CONNECT
VCC
GND
VO
5
6
7
8
4
1
BOTTOM VIEW,
HFBR-2506AFZ
SEE NOTE 4
6Speci cations and content subject to change without prior noti cation.
Figure 8. Test Circuit for Measuring Unpeaked Rise and Fall Times
Figure 7. Typical POF receiver pulse width distortion vs optical power
HP808 2A
PULSE
GENERATOR
50 OHM
LOAD
RESISTOR
BCP MODEL 300
500 Mhz
BANDWIDTH
SILICON
AVALANCHE
PHOTODIODE
HP54002A
50 OHM BNC
INPUT POD
HP54100A
OSCILLOSCOPE
HFBR-1506AFZ
-30
-20
-10
0
10
20
30
-22 -18 -14 -10 -6 -2 2
PRL - RECEIVER OPTICAL INPUT POWER - dBm
RECEIVER PWD - ns
Speci cations and content subject to change without prior noti cation.
For product information and a complete list of distributors, please go to our web site: www.avagotech.com
Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries.
Data subject to change. Copyright © 2005-2011 Avago Technologies. All rights reserved.
AV02-1412EN - November 4, 2011
Mechanical Dimensions
HFBR-X506AFZ
