CAUTION: The small junction sizes inherent to the design of this component increase the component's susceptibility
to damage from electrostatic discharge (ESD). It is advised that normal static precautions be taken in handling and
assembly of this component to prevent damage and/or degradation which may be induced by ESD.
HFBR-0600Z Series
SERCOS Fiber Optic Transmitters and Receivers
Data Sheet
SERCOS
SERCOS is a Serial Realtime Communication System, a
standard digital interface for communication between
controls and drives for numerically controlled machines.
The SERCOS interface speci cation was written by a joint
working group of the VDW (German Machine Tool Builders
Association) and ZVEI (German Electrical and Electronic
Manufacturer’s Association) to allow data exchange
between NC controls and drives via ber optic rings, with
isolation and noise immunity. The HFBR-0600Z family
of ber optic transmitters and receivers comply to the
SERCOS speci cations for transmitter and receiver optical
characteristics and connector style (SMA).
Description
The HFBR-0600Z components are capable of operation at
symbol rates from DC to over 2 MBd and distances from
0 to over 20 metres. The HFBR-1602Z and HFBR-1604Z
transmitters contain a 655 nm AlGaAs emitter capable of
e ciently launching optical power into 1000 mm plastic
optical ber. The optical output is speci ed at the end of
0.5 m of plastic optical ber.
The HFBR-1604Z is a selected version of the HFBR-1602,
with power speci ed to meet the SERCOS high attenua-
tion speci cations.
The HFBR-2602Z receiver incorporates an integrated
photo IC containing a photodetector and DC ampli er
driving an open-collector Schottky output transistor. The
HFBR-2602Z is designed for direct interfacing to popular
logic families. The absence of an internal pullup resistor
allows the open-collector output to be used with logic
families such as CMOS requiring voltage excursions higher
than VCC. The HFBR-2602Z has a dynamic range of 15 dB.
Features
Fully compliant to SERCOS optical speci cations
Optimized for 1 mm plastic optical ber
Compatible with SMA connectors
Auto-insertable and wave solderable
Data transmission at symbol rates from DC to over
2 MBd for distances from 0 to over 20 metres
Applications
Industrial control data links
Reduction of lightning and voltage transient suscep-
tibility
Tempest-secure data processing equipment
Isolation in test and measurement instruments
Robotics communication
2
HFBR-0600Z SMA Series
Mechanical Dimensions
HFBR-160XZ Transmitters
HFBR-2602Z Receiver
Pin Function
1*
2
3
4*
5*
6
7**
8*
N.C.
ANODE
N.C.
N.C.
N.C.
N.C.
CATHODE
N.C.
Pin Function
1*
2
3
4*
5*
6
7
8*
N.C.
VCC (5 V)
COMMON
N.C.
N.C.
DATA
COMMON
N.C.
* Pins 1, 4, 5, and 8 are isolated from the internal circuitry, but
electrically connected to one another.
** Transmitter Pin 7 may be left unconnected if necessary.
In the receiver, both the opencollector “Data” output Pin 6
and VCC Pin 2 are referenced to “Common” Pin 3 and 7.
It is essential that a bypass capacitor (0.1 F ceramic) be
connected from Pin 2 (VCC) to Pin 3 (circuit common) of
the receiver.
SMA is an industry standard ber optic connector,
available from many ber optic connector suppliers.
HFBR-4401Z is a kit consisting of 100 nuts and 100 washers
for panel mounting the HFBR-0600Z components.
3
HFBR-1602Z/1604Z Transmitters
Absolute Maximum Ratings
Parameter Symbol Min. Max. Units Reference
Storage Temperature TS-55 85 °C
Operating Temperature TA-40 85 °C
Lead Soldering Cycle Temp. 260 °C Note 1
Time 10 s Note 1
Forward Input Current Peak IFPK 120 mA
Forward Input Current Average IFavg 60 mA
Reverse Input Voltage VBR -5 V
Electrical/Optical Characteristics 0 to 55° C, unless otherwise stated.
Parameter Symbol Min. Typ.[2] Max. Unit Condition Reference
Forward Voltage VF1.5 1.9 2.2 V IF = 35 mA
Forward Voltage
Temp. Coe cient
VF/T-1.2 mV/°C IF = 35 mA
Reverse Input Voltage VBR -5.0 -18 V IR = 100 A
Peak Emission Wavelength P640 655 675 nm
Full Width Half Maximum FWHM 20 30 nm 25° C
Diode Capacitance CT30 pF VF = 0
f = 1 MHz
Optical Power
Temp. Coe cient
PT/T-0.01 dBm/°C IF = 35 mA
Thermal Resistance JA 330 °C/W Notes 3, 4
Peak Optical Output
Power of HFBR-1602Z
PT1602 -10.5 -5.5 dBm IF = 35 mA Notes 5, 6,11
Peak Optical Output
Power of HFBR-1604Z
PT1604 -7.5
-10.5
-3.5
-5.5
dBm
dBm
IF = 60 mA
IF = 35 mA
Notes 5, 6,11
Rise Time (10% to 90%) tr57
50
ns
ns
IF = 60 mA
IF = 35 mA
Fall Time (90% to 10%) tf40
27
ns
ns
IF = 60 mA
IF = 35 mA
4
HFBR-2602Z Receiver
Absolute Maximum Ratings
Parameter Symbol Min. Max. Units Reference
Storage Temperature TS-55 85 °C
Operating Temperature TA-40 85 °C
Lead Soldering Cycle Temp. 260 °C Note 1
Time 10 s Note 1
Supply Voltage Vcc -0.5 7.0 V
Output Current IO25 mA
Output Voltage VO-0.5 18.0 V
Output Collector Power Dissipation PO AVG 40 mW
Fan Out (TTL) N 5 Note 8
Electrical/Optical Characteristics 0 to 55° C;
Fiber core diameter ≤ 1.0 mm, ber N.A. ≤ 0.5, 4.75 V ≤ VCC ≤ 5.25 V
Parameter Symbol Min. Typ.[2] Max. Unit Condition Reference
High Level Output Current IOH 5 250 AVOH = 18 V
PR < -31.2 dBm
Low Level Output Voltage VOL 0.4 0.5 V IOL = 8 mA
PR > -20.0 dBm
High Level Supply Current ICCH 3.5 6.3 mA VCC = 5.25 V
PR < -31.2 dBm
Low Level Supply Current ICCL 6.2 10 mA VCC = 5.25 V
PR > -20.0 dBm
Dynamic Characteristics 0 to 55° C unless otherwise speci ed; 4.75 V ≤ VCC ≤ 5.25 V; BER ≤ 10-9
Parameter Symbol Min. Typ.[2] Max. Unit Condition Reference
Peak Input Power
Level Logic HIGH
PRH -31.2 dBm P = 655 nm Note 7
Peak Input Power
Level Logic LOW
PRL -20.0 -5.0 dBm IOL = 8 mA Note 7
Propagation Delay
LOW to HIGH
tPLH 60 ns PR = -20 dBm
2 MBd
Note 8, 9
Propagation Delay
HIGH to LOW
tPHL 110 ns PR = -20 dBm
2 MBd
Note 8, 9
Pulse Width Distortion,
tPLH - tPHL
PWD 50
-50
ns
ns
PR = -5 dBm
PR = -20 dBm
Note 10
Figure 6
Notes:
1. 2.0 mm from where leads enter case.
2. Typical data at TA = +25° C.
3. Thermal resistance is measured with the transmitter coupled to a connector assembly and ber, and mounted on a printed circuit board.
4. Pins 2, 6, and 7 are welded to the cathode header connection to minimize the thermal resistance from junction to ambient. To further reduce the
thermal resistance, the cathode trace should be made as large as is consistent with good RF circuit design.
5. PT is measured with a large area detector at the end of 0.5 metre of plastic optical ber with 1 mm diameter and numerical aperture of 0.5.
6. When changing W to dBm, the optical power is referenced to 1 mW (1000 W). Optical Power P(dBm) = 10 log [P (W)/1000 W].
7. Measured at the end of 1mm plastic ber optic cable with a large area detector.
8. 8 mA load (5 x 1.6 mA), RL = 560 .
9. Propagation delay through the system is the result of several sequentially occurring phenomena. Consequently it is a combination of data-rate-
limiting e ects and of transmission-time e ects. Because of this, the data-rate limit of the system must be described in terms of time di erentials
between delays imposed on falling and rising edges. As the cable length is increased, the propagation delays increase. Data-rate, as limited by
pulse width distortion, is not a ected by increasing cable length if the optical power level at the receiver is maintained.
10. Pulse width distortion is the di erence between the delay of the rising and falling edges.
11. Both HFBR-1602Z and HFBR-1604Z meet the SERCOS "low attenuation" speci cations when operated at 35 mA; only HFBR-1604Z meets the
SERCOS "high attenuation" limits when operated at 60 mA.
5
Figure 1. Forward voltage and current characteristics. Figure 2. Typical transmitter output vs. forward current.
Figure 3. Transmitter spectrum normalized to the peak at 25° C. Figure 4. Typical propagation delay through system with 0.5 metre of cable.
Figure 5. Typical HFBR-160XZ/2602Z link pulsewidth distortion vs. optical
power.
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 © 2005-2012 Avago Technologies. All rights reserved. Obsoletes 5989-4798EN
AV02-3638EN - June 19, 2012
Figure 6. System propagation delay test circuit and waveform timing de nitions.
