Description
SERCOS, an acronym for SErial Realtime
COmmunications Systems, is a standard digital
interface for communication 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 fiber-optic rings, with voltage isolation and noise
immunity. The HFBR-1506AM and HFBR-2506AM
products have a guaranteed performance up to 16
MBd.
Features
••
••
•Meets Industrial SERCOS 16MBd standard
••
••
•SMA ports
••
••
•650 nm wavelength
••
••
•Metal coated, plastic packaging
••
••
•Specified 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-1506AM/HFBR-2506AM
Fiber Optic SMA Transmitters and Receivers for
16 MBd SERCOS Applications
Data Sheet
°, ±, ≥,≤,≠,∅, ∞,µ,π,ο,θ,λ, ρ,σ,γ,φ,η, δ,χ,β,α,Ω,, Σ,,,∏,, ∝,∂,τ,υ,ϖ, ω,ξ,ψ,ζ,∅, ≈,,, •
••
••
•Bullet Bold
Obsoletes: 5988-8402EN
5988-9121EN
2
Table 1. Link Performance Specification
0 °C to +70 °C unless otherwise noted.
Parameter Symbol Min Max Unit Condition Reference
Link distance with
HFBR-1506AM/2506AM
I0.1
0.1
45
200
m
m
POF
HCS
Note 1, 2, 4, 6
Note 1, 3, 5, 6
CAUTION: The small junction size inherent in the design of these components increases the components’ susceptibility to damage
from electrostatic 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.
Notes:
1. 60 mA nominal drive current.
2. POF HFBR-Exxyyy 0.23 dB/m worst case attenuation.
3. HCS 10 dB/km worst case attenuation.
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.
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, Agilent does not recommend the use of cleaners
that use halogenated hydrocarbons because of their
potential environmental harm.
Package Information
The transmitters and receivers are housed in a low-
cost, dual-in-line package that is made of high strength,
heat resistant, chemically resistant and UL 94V-O (UL
file # E121562) flame retardant plastic. Both the
transmitter and receiver are coated with a layer of
conductive alloy for better air discharge (ESD)
performance. The package is designed for auto
insertion and wave soldering so it is ideal for high
volume production 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 sufficient to remove particles
of dirt; methanol on a cotton swab also works well.
3
HFBR-1506AM Transmitter
The HFBR-1506AM transmitter incoporates a 650nm
LED in a metal-coated, plastic housing. The high light
output power enables the use of both plastic optical
fiber (POF) and Hard Clad Silica (HCS). This transmitter
can operate up to 16MBd using a simple driver circuit.
The HFBR-1506AM is compatible with SMA connectors.
Figure 1.
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
Tem p
Time
TSOL
TSOL
260
10
°C
s
2
Parameter Symbol Min Typ1Max Unit Condition Notes
Optical Power Temperature Coefficient ∆PT/∆T-0.02 dB/°C
Forward Voltage VF1.8 2.1 2.65 V IF, dc = 60 mA See Figure 2
Forward Voltage Temperature Coefficient ∆VF/∆T-1.8 mV/°C See Figure 2
Breakdown Voltage VBR 3.0 13 V IF, dc = -10 µA
Peak Emission Wavelength lPK 640 650 660 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 2, 3
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
PIN FUNCTION
1
4
5
6
7
8
CONNECTED TO PIN 4
CONNECTED TO PIN 1
GND
GND
CATHODE
ANODE
5
6
7
8
4
1
BOTTOM VIEW,
HFBR-1506AM
SEE NOTE 10
Notes:
1. Typical data are at +25 °C
2. Thermal resistance is measured with the transmitter coupled to a connector assembly and fiber, and mounted on a printed circuit board.
3. To further reduce the thermal resistance, the cathode trace should be made as large as is consistent with good RF circuit design.
4. 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.
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.
Absolute Maximum Ratings
Electrical Characteristics Table
0 °C to +70 °C unless otherwise noted.
4
Peak Output Power
0 °C to +70 °C unless otherwise noted.
Model Number Symbol Min Max Unit Condition Reference
HFBR-1506AM Pr -6.0
-18.0
-2.0
-10.0
dBm POF, IF, dc = 60 mA
HCS®, IF, dc = 60 mA
Note 1
Figure 3
Figure 2. Typical Forward Voltage vs Drive
Current
Figure 3. Typical Normalized Optical
Power vs Drive Current
Figure 4. Typical Normalized Optical
Spectra
+5V Vcc
HFBR-1506AM HFBR-2506AM
R11
C5
R1 100
R2 not used
R8 not used
R7 500
C1 100pF
C2 not used
R6 not used R10 150
R3 100
R4 100
R5 100
R9 100
C3 100pF
C4 56pF
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
Notes:
1. Optical power measured at the end of 1 meters of 1 mm diameter plastic or 200 µm hard/plastic clad silica optical fiber with a large area
detector.
5
HFBR-2506AM Receiver
The HFBR-2506AM receiver is housed in a metal-coated,
plastic package, consists 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 first bit after a long idle period.
This enables operation 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-2506AM is compatible with
SMA connectors.
Figure 6.
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
Tem p
Time
TSOL
TSOL
260
10
°C
s
1
Parameter Symbol Min Typ1Max Unit Condition Notes
Peak Input Power Level Logic HIGH PRH -42
-44
dBm 1 mm POF
200 µm HCS
Peak Input Power Level Logic LOW PRL -20
-22
-2
-10
dBm 1 mm POF
200 µm HCS
|PWD| < 19 ns
2
Supply Current ICC 27 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
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-2506AM
SEE NOTE 4
Notes:
1. Typical data are at +25 °C, VCC = 5.0 V
2. BER <= 10E-9, includes a 10.8 dB margin below the receiver switching threshold level (signal to noise ratio =12)
3. 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
Notes:
1. 1.6 mm below seating plane.
Absolute Maximum Ratings
Electrical Characteristics Table
0 °C to +70 °C, 4.75 V < VCC < 5.25 V, VP-P Noise < = 100 mV unless otherwise noted.
6
Figure 8. Test Circuit for Measuring Unpeaked Rise and Fall Times
Figure 7. Typical POF receiver pulse width distortion vs optical power
HP8082A
PULSE
GENERATOR
50 OHM
LOAD
RESISTOR
BCP MODEL 300
500 Mhz
BANDWIDTH
SILICON
AVALANCHE
PHOTODIODE
HP54002A
50 OHM BNC
INPUT POD
HP54100A
OSCILLOSCOPE
HFBR-1506AM
7
Mechanical Dimensions
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, Limited in the United States and other countries.
Data subject to change. Copyright © 2006 Avago Technologies Pte. All rights reserved. Obsoletes: 5988-8402EN
5988-9121EN - July 4, 2006
