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Agilent HFBR-1506AM/HFBR-2506AM Fiber Optic SMA Transmitters and Receivers for 16 MBd SERCOS Applications
Data Sheet
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 fiberoptic rings, with voltage isolation and noise immunity. The HFBR-1506AM and HFBR2506AM products have a guaranteed performance up to 16 MBd. Package Information The transmitters and receivers are housed in a low-cost, dualin-line package that is made of high strength, heat resistant, chemically resistant and UL 94VO (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. 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 Nmethylpyrolldone. Also, Agilent does not recommend the use of cleaners that use halogenated hydrocarbons because of their potential environmental harm.
Features * Meets Industrial SERCOS 16MBd standard * SMA ports * 650 nm wavelength * Metal coated, plastic packaging * Specified for use with 1 mm POF and 200 m HCS * DC - 16 MBd data rate Applications * Industrial Control Data Links * Factory Automation Data Links * Voltage Isolation Applications
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.
Table 1. Link Performance Specification 0 C to +70 C unless otherwise noted.
Parameter
Link distance with HFBR-1506AM/2506AM
Symbol
I
Min
0.1 0.1
Max
45 200
Unit
m m
Condition
POF HCS
Reference
Note 1, 2, 4, 6 Note 1, 3, 5, 6
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.
2
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. Absolute Maximum Ratings
4
5 6 7
1
8
BOTTOM VIEW, HFBR-1506AM SEE NOTE 4
PIN 1 4 5 6 7 8
FUNCTION CONNECTED TO PIN 4 CONNECTED TO PIN 1 GND GND CATHODE ANODE
Figure 1.
Parameter
Storage and Operating Temperature Peak Forward Input Current Average Forward Input Current Reverse Input Voltage Lead Soldering Cycle Temp Time
Symbol
TS,
O
Min
-40
Max
+85 90 60 3
Unit
C mA mA V
Notes
IF, PK IF, AVG VR
1
TSOL TSOL
260 10
C s
2
Notes: 1. For I F_PK > 60 mA, the duty factor must maintain I F_AVG <= 60 mA and pulse width <= 1 s. 2. 1.6 mm below seating plane.
Electrical Characteristics Table 0 C to +70 C unless otherwise noted.
Parameter
Optical Power Temperature Coefficient Forward Voltage Forward Voltage Temperature Coefficient Breakdown Voltage Peak Emission Wavelength Full Width Half Max Diode Capacitance Thermal Resistance Rise Time (10% to 90%) Fall Time (90% to 10%)
Symbol
DPT/DT VF DVF/DT VBR lPK FWHM CO qJC tr tf
Min
Typ1
-0.02
Max
Unit
dB/C
Condition
Notes
1.8
2.1 -1.8
2.65
V mV/C V
IF, dc = 60 mA
See Figure 2 See Figure 2
3.0 640
13 650 21 60 140 15 15 660 30
IF, dc = -10 A See Figure 4 See Figure 4 VF = 0 V, f = 1 MHz Notes 2, 3 10% to 90% IF = 60 mA See Figure 6 See Figure 6
nm nm pF C/W ns ns
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.
3
Peak Output Power 0 C to +70 C unless otherwise noted.
Model Number
HFBR-1506AM
Symbol
Pr
Min
-6.0 -18.0
Max
-2.0 -10.0
Unit
dBm
Condition
POF, IF, dc = 60 mA HCS(R), IF, dc = 60 mA
Reference
Note 1 Figure 3
Notes: 1. Optical power measured at the end of 1 meters of 1 mm diameter plastic or 200 m hard/plastic clad silica optical fiber with a large area detector.
2.5
P T - NORMALIZED OUTPUT POWER - dB
10
-40 C
-40 C 0
NORMALIZED SPECTRAL OUTPUT POWER
1.4 1.2
-40 C
2.3
V F - FORWARD VOLTAGE - V
0 C 25 C 70 C
25 C
0 C 1.0 25 C 0.8 0.6 0.4 0.2 0 610 630 650 670 690 70 C 85 C
2.1
-10 85 C -20
1.9 85 C
1.7
-30
1.5 1 10 100 I F,DO - TRANSMITTER DRIVE CURRENT - mA
-40 1 10 100 I F,DO - TRANSMITTER DRIVE CURRENT - mA
WAVELENGTH - nm
Figure 2. Typical Forward Voltage vs Drive Current
Figure 3. Typical Normalized Optical Power vs Drive Current
Figure 4. Typical Normalized Optical Spectra
C1 100pF R1 100 R7 500 C2 not R2 not used R8 not used C3 100pF used
+5V Vcc
R11
R3 100
HFBR-1506AM
HFBR-2506AM
C5
R4 100 R5 100
R9 100 C4 56pF
R6 not used
R10 150
Figure 5. Recommended drive circuit according to SERCOS An17 (Ifnom ~ 35 mA)
4
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.
4
5 6 7
1
8
BOTTOM VIEW, HFBR-2506AM SEE NOTE 3
PIN 1 4 5 6 7 8
FUNCTION CONNECTED TO PIN 4 CONNECTED TO PIN 1 NO CONNECT VCC GND VO
Figure 6.
Absolute Maximum Ratings
Parameter
Storage and Operating Temperature Supply Voltage Average Output Current Output Power Dissipation Lead Soldering Cycle Temp Time
Notes: 1. 1.6 mm below seating plane.
Symbol
TS, O VCC IO, AVG POD
Min
-40 -0.5
Max
+85 5.5 16 80
Unit
C V mA mW
Notes
TSOL TSOL
260 10
C s
1
Electrical Characteristics Table 0 C to +70 C, 4.75 V < VCC < 5.25 V, VP-P Noise < = 100 mV unless otherwise noted.
Parameter
Peak Input Power Level Logic HIGH
Symbol
PRH PRL
Min
Typ1
Max
-42 -44
Unit
dBm
Condition
1 mm POF 200 m HCS 1 mm POF 200 m HCS |PWD| < 19 ns VO = Open IO = 40 A IO = 1.6 mA
Notes
Peak Input Power Level Logic LOW
-20 -22
-2 -10
dBm
2
Supply Current High Level Output Voltage Low Level Output Voltage Pulse Width Distortion Propagation Delay Time
ICC VOH VOH PWD TP_HL or
_LH
27 4.2 4.7 0.22 -19
45
mA V
0.4 19 150
V ns ns
Notes: 1. Typical data are at +25 C, V CC = 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
5
Figure 7. Typical POF receiver pulse width distortion vs optical power
HP808 2A PULSE GENERATOR
BCP MODEL 300 500 Mhz BANDWIDTH SILICON AVALANCHE PHOTODIODE
HFBR-1506AM
50 OHM LOAD RESISTOR
HP54002A 50 OHM BNC INPUT POD
HP54100A OSCILLOSCOPE
Figure 8. Test Circuit for Measuring Unpeaked Rise and Fall Times
6
Mechanical Dimensions
HFBR-1506AM/2506AM
7
www.agilent.com/ semiconductors
For product information and a complete list of distributors, please go to our web site. For technical assistance call: Americas/Canada: +1 (800) 235-0312 or (408) 654-8675 Europe: +49 (0) 6441 92460 China: 10800 650 0017 Hong Kong: (+65) 6271 2451 India, Australia, New Zealand: (+65) 6271 2394 Japan: (+81 3) 3335-8152(Domestic/International), or 0120-61-1280(Domestic Only) Korea: (+65) 6271 2194 Malaysia, Singapore: (+65) 6271 2054 Taiwan: (+65) 6271 2654 Data subject to change. Copyright (c) 2003 Agilent Technologies, Inc. Obsoletes: 5988-8402EN March 20, 2003 5988-9121EN

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