SERCOS Fiber Optic Transmitters and Receiver Technical Data HFBR-0600 Series Features • Fully Compliant to SERCOS Optical Specifications • Optimized for 1 mm Plastic Optical Fiber • 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 Susceptibility • Tempest-Secure Data Processing Equipment • Isolation in Test and Measurement Instruments • Robotics Communication 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 specification 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 fiber optic rings, with isolation and noise immunity. The HFBR-0600 family of fiber optic transmitters and receivers comply to the SERCOS specifications for transmitter and receiver optical characteristics and connector style (SMA). Description The HFBR-0600 components are capable of operation at symbol rates from DC to over 2 MBd and distances from 0 to over 20 metres. The HFBR-1602 and HFBR-1604 transmitters contain a 655-nm AlGaAs emitter capable of efficiently launching optical power into 1000 µm plastic optical fiber. The optical output is specified at the end of 0.5 m of plastic optical fiber. SERCOS high attenuation specifications. The HFBR-2602 receiver incorporates an integrated photo IC containing a photodetector and dc amplifier driving an opencollector Schottky output transistor. The HFBR-2602 is designed for direct interfacing to popular logic families. The absence of an internal pull-up resistor allows the open-collector output to be used with logic families such as CMOS requiring voltage excursions higher than VCC. The HFBR-2602 has a dynamic range of 15 dB. The HFBR-1604 is a selected version of the HFBR-1602, with power specified to meet the 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. 2 HFBR-160X Transmitters HFBR-2602 Receiver HFBR-0600 SMA Series Mechanical Dimensions PART NUMBER DATE CODE YYWW 12.7 (0.50) HFBR-X60X 1/4 - 36 UNS 2A THREAD 22.2 (0.87) *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 µF ceramic) be connected from Pin 2 (VCC) to Pin 3 (circuit common) of the receiver. SMA is an industry standard fiber optic connector, available from many fiber optic connector suppliers. HFBR-4401 is a kit consisting of 100 nuts and 100 washers for panel mounting the HFBR-0600 components. 3 HFBR-1602/1604 Transmitters Absolute Maximum Ratings Parameter Symbol Min. Max. Unit Storage Temperature TS -55 85 °C Operating Temperature TA -40 85 °C Temp. 260 °C Note 1 Time 10 s Note 1 Lead Soldering Cycle Forward Input Current Peak IFPK 120 mA Forward Input Current Average IFavg 60 mA Reverse Input Voltage VBR -5 V Reference Electrical/Optical Characteristics 0 to 55°C, unless otherwise stated. Symbol Min. Typ.[2] Max. Unit Condition Forward Voltage VF 1.5 1.9 2.2 V IF = 35 mA Forward Voltage Temp. Coefficient ∆VF/∆T -1.2 mV/°C IF = 35 mA V IR = 100 µA Parameter Reverse Input Voltage VBR -5.0 -18 Peak Emission Wavelength λP 640 655 675 nm Full Width Half Maximum FWHM 20 30 nm 25°C CT 30 pF VF = 0 f = 1 MHz ∆PT/∆T -0.01 dBm/°C IF = 35 mA θJA 330 °C/W Diode Capacitance Optical Power Temp. Coefficient Thermal Resistance Peak Optical Output Power of HFBR-1602 PT1602 Peak Optical Output Power of HFBR-1604 PT1604 -10.5 -7.5 -10.5 Reference Notes 3, 4 -5.5 dBm I F = 35 mA Notes 5, 6, 11 -3.5 -5.5 dBm dBm IF = 60 mA IF = 35 mA Notes 5, 6, 11 Rise Time (10% to 90%) tr 57 50 ns ns IF = 60 mA IF = 35 mA Fall Time (90% to 10%) tf 40 27 ns ns IF = 60 mA IF = 35 mA 4 HFBR-2602 Receiver Absolute Maximum Ratings Parameter Symbol Min. Max. Unit Storage Temperature TS -55 85 °C Operating Temperature TA -40 85 °C Temp. 260 °C Note 1 Time 10 s Note 1 7.0 V 25 mA 18.0 V PO AVG 40 mW N 5 Lead Soldering Cycle Supply Voltage VCC Output Current IO Output Voltage VO Output Collector Power Dissipation Fan Out (TTL) -0.5 -0.5 Reference Note 8 Electrical/Optical Characteristics 0 to 55°C; Fiber core diameter ≤ 1.0 mm, fiber N.A. ≤ 0.5, 4.75 V ≤ VCC ≤ 5.25 V Parameter Symbol Min. Typ.[2] Max. Unit Condition High Level Output Current IOH 5 250 µA VOH = 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 Reference Dynamic Characteristics 0 to 55°C unless otherwise specified; 4.75 V ≤ VCC ≤ 5.25 V; BER ≤ 10-9 Parameter Symbol Min. Typ.[2] Max. Unit Condition Reference -31.2 dBm λP = 655 nm Note 7 -5.0 dBm IOL = 8 mA Note 7 Peak Input Power Level Logic HIGH PRH Peak Input Power Level Logic LOW PRL 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 - t PHL PWD 50 ns PR = -5 dBm Note 10 Figure 6 -50 ns PR = -20 dBm -20.0 5 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 fiber, 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 fiber with 1 mm Figure 1. Forward Voltage and Current Characteristics. 6. 7. 8. 9. diameter and numerical aperture of 0.5. When changing µW to dBm, the optical power is referenced to 1 mW (1000 µW). Optical Power P(dBm) = 10 log [P (µW)/1000 µW]. Measured at the end of 1mm plastic fiber optic cable with a large area detector. 8 mA load (5 x 1.6 mA), R L = 560 Ω. Propagation delay through the system is the result of several sequentially occurring phenomena. Consequently it is a combination of data-rate-limiting effects and of transmission-time effects. Because of this, the data-rate limit of the system must be described Figure 2. Typical Transmitter Output vs. Forward Current. Figure 4. Typical Propagation Delay through System with 0.5 Metre of Cable. in terms of time differentials between delays imposed on falling and rising edges. As the cable length is increased, the propagation delays increase. Datarate, as limited by pulse width distortion, is not affected by increasing cable length if the optical power level at the receiver is maintained. 10. Pulse width distortion is the difference between the delay of the rising and falling edges. 11. Both HFBR-1602 and HFBR-1604 meet the SERCOS "low attenuation" specifications when operated at 35 mA; only HFBR-1604 meets the SERCOS "high attenuation" limits when operated at 60 mA. Figure 3. Transmitter Spectrum Normalized to the Peak at 25°C. Figure 5. Typical HFBR-160X/2602 Link Pulsewidth Distortion vs. Optical Power. Figure 6. System Propagation Delay Test Circuit and Waveform Timing Definitions. 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 © 2002 Agilent Technologies, Inc. November 30, 1999 5091-1462E