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1 x 9 Fiber Optic Transceivers for Gigabit Ethernet Technical Data
HFBR-53D5 Family, 850 nm VCSEL HFCT-53D5 Family, 1300 nm FP Laser
Features
* Compliant with Specifications for IEEE- 802.3z Gigabit Ethernet * Industry Standard Mezzanine Height 1 x 9 Package Style with Integral Duplex SC Connector * Performance HFBR-53D5: 220 m with 62.5/125 m MMF 500 m with 50/125 m MMF HFCT-53D5: 550 m with 62.5/125 m MMF 550 m with 50/125 m MMF 10 km with 9/125 SMF * IEC 60825-1 Class 1/CDRH Class I Laser Eye Safe * Single +5 V Power Supply Operation with PECL Logic Interfaces * Wave Solder and Aqueous Wash Process Compatible
Applications
* Switch to Switch Interface * Switched Backbone Applications * High Speed Interface for File Servers * High Performance Desktops
Related Products
* Physical Layer ICs Available for Optical or Copper Interface (HDMP-1636A/ 1646A) * Versions of this Transceiver Module Also Available for Fibre Channel (HFBR/HFCT-53D3) * Gigabit Interface Converters (GBIC) for Gigabit Ethernet (CX, SX, LX) an electrical subassembly, and the package housing which incorporates a duplex SC connector receptacle. Transmitter Section The transmitter section of the HFBR-53D5 consists of an 850 nm Vertical Cavity Surface Emitting Laser (VCSEL) in an optical subassembly (OSA), which mates to the fiber cable. The HFCT-53D5 incorporates a 1300 nm Fabry-Perot (FP) Laser designed to meet the Gigabit Ethernet LX specification. The OSA is driven by a custom, silicon bipolar IC which converts differential PECL logic signals (ECL referenced to a +5 Volt supply) into an analog laser diode drive current.
Description
The HFBR/HFCT-53D5 transceiver from Agilent Technologies allows the system designer to implement a range of solutions for multimode and single mode Gigabit Ethernet applications. The overall Agilent transceiver product consists of three sections: the transmitter and receiver optical subassemblies,
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Receiver Section The receiver of the HFBR-53D5 includes a silicon PIN photodiode mounted together with a custom, silicon bipolar transimpedance preamplifier IC in an OSA. This OSA is mated to a custom silicon bipolar circuit that provides post-amplification and quantization. The HFCT-53D5 utilizes an InP PIN photodiode in the same configuration. The post-amplifier also includes a Signal Detect circuit which provides a PECL logic-high output upon detection of a usable input optical signal level. This singleended PECL output is designed to drive a standard PECL input through a 50 PECL load.
Recommended Solder fluxes Solder fluxes used with the HFBR/HFCT-53D5 should be water-soluble, organic fluxes. Recommended solder fluxes include Lonco 3355-11 from London Chemical West, Inc. of Burbank, CA, and 100 Flux from Alpha-Metals of Jersey City, NJ. Recommended Cleaning/ Degreasing Chemicals 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, HP does not recommend the use of cleaners that use halogenated hydrocarbons because of their potential environmental harm.
wrist straps, work benches, and floor mats in ESD controlled areas. The transceiver performance has been shown to provide adequate performance in typical industry production environments. The second case to consider is static discharges to the exterior of the equipment chassis containing the transceiver parts. To the extent that the duplex SC connector receptacle is exposed to the outside of the equipment chassis it may be subject to whatever system-level ESD test criteria that the equipment is intended to meet. The transceiver performance is more robust than typical industry equipment requirements of today. Electromagnetic Interference (EMI) Most equipment designs utilizing these high-speed transceivers from Agilent will be required to meet the requirements of FCC in the United States, CENELEC EN55022 (CISPR 22) in Europe and VCCI in Japan. Refer to EMI section (page 5) for more details. Immunity Equipment utilizing these transceivers will be subject to radio-frequency electromagnetic fields in some environments. These transceivers have good immunity to such fields due to their shielded design. Eye Safety These laser-based transceivers are classified as AEL Class I (U.S. 21 CFR(J) and AEL Class 1 per EN 60825-1 (+A11). They are eye safe when used within the data sheet limits per CDRH. They are also eye safe under normal operating conditions and under all reasonably forseeable single
Package and Handling Instructions
Flammability The HFBR/HFCT-53D5 transceiver housing is made of high strength, heat resistant, chemically resistant, and UL 94V-0 flame retardant plastic. Recommended Solder and Wash Process The HFBR/HFCT-53D5 is compatible with industrystandard wave or hand solder processes. Process plug This transceiver is supplied with a process plug (HFBR-5000) for protection of the optical ports within the duplex SC connector receptacle. This process plug prevents contamination during wave solder and aqueous rinse as well as during handling, shipping and storage. It is made of a hightemperature, molded sealing material that can withstand 80C and a rinse pressure of 110 lbs per square inch.
Regulatory Compliance
(See the Regulatory Compliance Table for transceiver performance) The overall equipment design will determine the certification level. The transceiver performance is offered as a figure of merit to assist the designer in considering their use in equipment designs. Electrostatic Discharge (ESD) There are two design cases in which immunity to ESD damage is important. The first case is during handling of the transceiver prior to mounting it on the circuit board. It is important to use normal ESD handling precautions for ESD sensitive devices. These precautions include using grounded
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fault conditions per EN60825-1. Agilent has tested the transceiver design for compliance with the requirements listed below under normal operating conditions and under single fault conditions where applicable. TUV Rheinland has granted certi-fication to these transceivers for laser eye safety and use in EN 60950 and EN 60825-2 applications. Their performance enables the transceivers to be used without concern for eye safety up to 7 volts transmitter V CC .
CAUTION: There are no user serviceable parts nor any maintenance required for the HFBR/HFCT-53D5. All adjustments are made at the factory before shipment to our customers. Tampering with or modifying the performance of the HFBR/HFCT-53D5 will result in voided product warranty. It may also result in improper operation of the HFBR/HFCT-53D5 circuitry, and possible overstress of the laser source. Device degradation or product failure may result.
Connection of the HFBR/HFCT53D5 to a nonapproved optical source, operating above the recommended absolute maximum conditions or operating the HFBR/HFCT-53D5 in a manner inconsistent with its design and function may result in hazardous radiation exposure and may be considered an act of modifying or manufacturing a laser product. The person(s) performing such an act is required by law to recertify and reidentify the laser product under the provisions of U.S. 21 CFR (Subchapter J).
Regulatory Compliance
Feature Test Method Electrostatic Discharge MIL-STD-883C (ESD) to the Method 3015.4 Electrical Pins Electrostatic Discharge Variation of IEC 801-2 (ESD) to the Duplex SC Receptacle Electromagnetic Interference (EMI) FCC Class B CENELEC EN55022 Class B (CISPR 22A) VCCI Class I Variation of IEC 801-3 Performance Class 1 (>2000 V).
Typically withstand at least 15 kV without damage when the duplex SC connector receptacle is contacted by a Human Body Model probe. Margins are dependent on customer board and chassis designs.
Immunity
Laser Eye Safety and Equipment Type Testing
US 21 CFR, Subchapter J per Paragraphs 1002.10 and 1002.12 EN 60825-1: 1994 +A11 EN 60825-2: 1994 EN 60950: 1992+A1+A2+A3
Typically show no measurable effect from a 10 V/m field swept from 27 to 1000 MHz applied to the transceiver without a chassis enclosure. AEL Class I, FDA/CDRH HFBR-53D5 Accession #9720151- 03 HFCT-53D5 Accession #9521220-16 AEL Class 1, TUV Rheinland of North America HFBR-53D5: Certificate #R9771018.5 Protection Class III HFCT-53D5: Certificate 933/51083 UL File E173874 (Pending)
Component Recognition
Underwriters Laboratories and Canadian Standards Association Joint Component Recognition for Information Technology Equipment Including Electrical Business Equipment.
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APPLICATION SUPPORT Optical Power Budget and Link Penalties
The worst-case Optical Power Budget (OPB) in dB for a fiberoptic link is determined by the difference between the minimum transmitter output optical power (dBm avg) and the lowest receiver sensitivity (dBm avg). This OPB provides the necessary optical signal range to establish a working fiber-optic link. The OPB is allocated for the fiber-optic cable length and the corresponding link penalties. For proper link performance, all penalties that affect the link performance must be accounted for within the link optical power budget. The Gigabit Ethernet IEEE 802.3z standard identifies, and has modeled, the contributions of these OPB penalties to establish the link length requirements for 62.5/125 m and 50/125 m multimode fiber usage. In addition, single-mode fiber with standard 1300 nm Fabry-Perot lasers have been modeled and specified. Refer to the IEEE 802.3z standard and its supplemental documents that develop the model, empirical results and final specifications. 10 km Link Support As well as complying with the LX 5 km standard, the HFCT-53D5 specification provides additional margin allowing for a 10 km Gigabit Ethernet link on single mode fiber. This is accomplished by limiting the spectral width and center wavelength range of the transmitter while increasing the output optical power and improving sensitivity. All other LX cable plant recommendations should be followed.
Data Line Interconnections
Agilent Technologies' HFBR/ HFCT-53D5 fiber-optic transceiver is designed to directly couple to +5 V PECL signals. The transmitter inputs are internally dc-coupled to the laser driver circuit from the transmitter input pins (pins 7, 8). There is no internal, capacitively-coupled 50 Ohm termination resistance within the transmitter input section. The transmitter driver circuit for the laser light source is a dc-coupled circuit. This circuit regulates the output optical power. The regulated light output will maintain a constant output optical power provided the data pattern is reasonably balanced in duty factor. If the data duty factor has long, continuous state times (low or high data duty factor), then the output optical power will gradually change its average output optical power level to its pre-set value. As for the receiver section, it is internally ac-coupled between the pre-amplifier and the postamplifier stages. The actual Data and Data-bar outputs of the postamplifier are dc-coupled to their respective output pins (pins 2, 3). Signal Detect is a single-ended, +5 V PECL output signal that is dc-coupled to pin 4 of the module. Signal Detect should not be ac-coupled externally to the follow-on circuits because of its infrequent state changes. Caution should be taken to account for the proper interconnection between the supporting Physical Layer integrated circuits and this HFBR/HFCT-53D5 transceiver. Figure 3 illustrates a recommended interface circuit for interconnecting to a +5 Vdc PECL fiber-optic transceiver.
Some fiber-optic transceiver suppliers' modules include internal capacitors, with or without 50 Ohm termination, to couple their Data and Data-bar lines to the I/O pins of their module. When designing to use these type of transceivers along with Agilent transceivers, it is important that the interface circuit can accommodate either internal or external capacitive coupling with 50 Ohm termination components for proper operation of both transceiver designs. The internal dc-coupled design of the HFBR/HFCT-53D5 I/O connections was done to provide the designer with the most flexibility for interfacing to various types of circuits.
Eye Safety Circuit
For an optical transmitter device to be eye-safe in the event of a single fault failure, the transmitter must either maintain normal, eye-safe operation or be disabled. In the HFBR-53D5 there are three key elements to the laser driver safety circuitry: a monitor diode, a window detector circuit, and direct control of the laser bias. The window detection circuit monitors the average optical power using the monitor diode. If a fault occurs such that the transmitter DC regulation circuit cannot maintain the preset bias conditions for the laser emitter within 20%, the transmitter will automatically be disabled. Once this has occurred, only an electrical power reset will allow an attempted turn-on of the transmitter. The HFCT-53D5 utilizes an integral fiber stub along with a current limiting circuit to guarantee eye-safety. It is
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intrinsically eye safe and does not require shut down circuitry.
standard RF suppression practices and avoiding poorly EMI-sealed enclosures. The first configuration is a standard HFBR-53D5 fiber-optic transceiver that has no external EMI shield. This unit is for applications where EMI is either not an issue for the designer, or the unit resides completely inside a shielded enclosure, or the module is used in low density, extremely quiet applications. The HFCT-53D5 is not available for use without an external shield. The second configuration, option EM, is for EMI shielding applications where the position of the transceiver module will extend outside the equipment enclosure. The metallized plastic package and integral external metal shield of the transceiver helps locally to terminate EM fields to the chassis to prevent their emissions outside the enclosure. This metal shield contacts the panel or enclosure on the inside of the aperture on all but the bottom side of the shield and provides a good RF connection to the panel. This option can accommodate various panel or enclosure thickness, i.e., .04 in. min. to 0.10 in. max. The reference plane for this panel thickness variation is from the front surface of the panel or enclosure. The recommended length for protruding the HFBR/HFCT-53D5EM transceiver beyond the front surface of the panel or enclosure is 0.25 in. With this option, there is flexibility of positioning the module to fit the specific need of the enclosure design. (See Figure 6 for the mechanical drawing dimensions of this shield.)
Signal Detect
The Signal Detect circuit provides a deasserted output signal that implies the link is open or the transmitter is OFF as defined by the Gigabit Ethernet specification IEEE 802.3z, Table 38.1. The Signal Detect threshold is set to transition from a high to low state between the minimum receiver input optional power and -30 dBm avg. input optical power indicating a definite optical fault (e.g. unplugged connector for the receiver or transmitter, broken fiber, or failed far-end transmitter or data source). A Signal Detect indicating a working link is functional when receiving encoded 8B/10B characters. The Signal Detect does not detect receiver data error or error-rate. Data errors are determined by Signal processing following the transceiver.
The third configuration, option FM, is for applications that are designed to have a flush mounting of the module with respect to the front of the panel or enclosure. The flush-mount design accommodates a large variety of panel thickness, i.e., 0.04 in. min. to 0.10 in. max. Note the reference plane for the flush-mount design is the interior side of the panel or enclosure. The recommended distance from the centerline of the transceiver front solder posts to the inside wall of the panel is 0.55 in. This option contacts the inside panel or enclosure wall on all four sides of this metal shield. See Figure 8 for the mechanical drawing dimensions of this shield. The two metallized designs are comparable in their shielding effectiveness. Both design options connect only to the equipment chassis and not to the signal or logic ground of the circuit board within the equipment closure. The front panel aperture dimensions are recommended in Figures 7 and 9. When layout of the printed circuit board is done to incorporate these metal-shielded transceivers, keep the area on the printed circuit board directly under the metal shield free of any components and circuit board traces. For additional EMI performance advantage, use duplex SC fiber-optic connectors that have low metal content inside them. This lowers the ability of the metal fiber-optic connectors to couple EMI out through the aperture of the panel or enclosure.
Electromagnetic Interference (EMI)
One of a circuit board designer's foremost concerns is the control of electromagnetic emissions from electronic equipment. Success in controlling generated Electromagnetic Interference (EMI) enables the designer to pass a governmental agency's EMI regulatory standard; and more importantly, it reduces the possibility of interference to neighboring equipment. There are three options available for the HFBR-53D5 and two options for the HFCT-53D5 with regard to EMI shielding which provide the designer with a means to achieve good EMI performance. The EMI performance of an enclosure using these transceivers is dependent on the chassis design. Agilent encourages using
Evaluation Kit
To help you in your preliminary transceiver evaluation, Agilent offers a 1250 MBd Gigabit
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Ethernet evaluation board (Part # HFBR-0535). This board allows testing of the fiber-optic VCSEL transceiver. It includes the HFBR-53D5 transceiver, test board, and application instructions. For single mode
transceiver evaluation the HFCT-53D5 can be substituted on this evaluation board. In addition, a complementary evaluation board is available for the HDMP-1636A 1250 MBd Gigabit Ethernet serializer/
deserializer (SERDES) IC. (Part # HDMP-163k) Please contact your local Field Sales representative for ordering details.
Absolute Maximum Ratings
Parameter Storage Temperature Supply Voltage Data Input Voltage Transmitter Differential Input Voltage Output Current Relative Humidity Symbol TS VCC VI VD ID RH 5 Min. -40 -0.5 -0.5 Typ. Max. 100 7.0 VCC 1.6 50 95 Unit C V V V mA % 2 1 Reference
Recommended Operating Conditions
Parameter Ambient Operating Temperature Case Temperature Supply Voltage Power Supply Rejection Transmitter Data Input Voltage - Low Transmitter Data Input Voltage - High Transmitter Differential Input Voltage Data Output Load Signal Detect Output Load Symbol TA TC VCC PSR VIL-VCC VIH-VCC VD RDL RSDL -1.810 -1.165 0.3 50 50 4.75 50 -1.475 -0.880 1.6 Min. 0 Typ. Max. 70 90 5.25 Unit C C V mVP-P V V V 6 6 4 5 5 3 Reference
Process Compatibility
Parameter Hand Lead Soldering Temperature/Time Wave Soldering and Aqueous Wash Symbol T SOLD/tSOLD T SOLD/tSOLD Min. Typ. Max. 260/10 260/10 Unit C/sec. C/sec. 7 Reference
Notes: 1. The transceiver is class 1 eye-safe up to VCC = 7 V. 2. This is the maximum voltage that can be applied across the Differential Transmitter Data Inputs without damaging the input circuit. 3. Case temperature measurement referenced to the center-top of the internal metal transmitter shield. 4. Tested with a 50 mVP-P sinusoidal signal in the frequency range from 500 Hz to 1500 kHz on the VCC supply with the recommended power supply filter in place. Typically less than a 0.25 dB change in sensitivity is experienced. 5. Compatible with 10 K, 10 KH, and 100 K ECL and PECL input signals. 6. The outputs are terminated to V CC -2 V. 7. Aqueous wash pressure < 110 psi.
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HFBR-53D5 Family, 850 nm VCSEL Transmitter Electrical Characteristics
(TA = 0C to +70C, V CC = 4.75 V to 5.25 V) Parameter Supply Current Power Dissipation Data Input Current - Low Data Input Current - High Laser Reset Voltage Symbol ICCT P DIST IIL IIH VCCT-reset -350 Min. Typ. 85 0.45 0 16 2.7 350 2.5 Max. 120 0.63 Unit mA W A A V 1 Reference
Receiver Electrical Characteristics
(TA = 0C to +70C, V CC = 4.75 V to 5.25 V) Parameter Supply Current Power Dissipation Data Output Voltage - Low Data Output Voltage - High Data Output Rise Time Data Output Fall Time Signal Detect Output Voltage - Low Signal Detect Output Voltage - High Symbol ICCR PDISR VOL - VCC VOH - VCC tr tf VOL - VCC VOH - VCC -1.950 -1.045 -1.950 -1.045 Min. Typ. 105 0.53 Max. 130 0.63 -1.620 -0.740 0.40 0.40 -1.620 -0.740 Unit mA W V V ns ns V V 2 3 3 4 4 3 3 Reference
Notes: 1. The Laser Reset Voltage is the voltage level below which the VCCT voltage must be lowered to cause the laser driver circuit to reset from an electrical/optical shutdown condition to a proper electrical/optical operating condition. The maximum value corresponds to the worst-case highest VCC voltage necessary to cause a reset condition to occur. The laser safety shutdown circuit will operate properly with transmitter VCC levels of 3.5 Vdc VCC 7.0 Vdc. 2. Power dissipation value is the power dissipated in the receiver itself. It is calculated as the sum of the products of VCC and ICC minus the sum of the products of the output voltages and currents. 3. These outputs are compatible with 10 K, 10 KH, and 100 K ECL and PECL inputs. 4. These are 20-80% values.
HFBR-53D5 Family, 850 nm VCSEL Transmitter Optical Characteristics
(TA = 0C to +70C, VCC = 4.75 V to 5.25 V) Parameter Symbol Output Optical Power POUT 50/125 m, NA = 0.20 Fiber Output Optical Power POUT 62.5/125 m, NA = 0.275 Fiber Optical Extinction Ratio Center Wavelength C Spectral Width - rms Optical Rise/Fall Time tr/t f RIN12 Coupled Power Ratio CPR Total Transmitter Jitter Added at TP2
See notes on following page.
Min. -9.5 -9.5 9 830
Typ.
Max. -4 -4
Unit dBm avg. dBm avg. dB nm nm rms ns dB/Hz dB ps
Reference 1 1 2
850
860 0.85 0.26 -117 227
3, 4, Fig. 1 5 6
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Receiver Optical Characteristics
(TA = 0C to +70C, VCC = 4.75 V to 5.25 V) Parameter Symbol Input Optical Power PIN Stressed Receiver Sensitivity 62.5 m 50 m Stressed Receiver Eye Opening at TP4 Receive Electrical 3 dB Upper Cutoff Frequency Operating Center Wavelength C Return Loss Signal Detect - Asserted PA Signal Detect - Deasserted PD Signal Detect - Hysteresis PA - PD Min. -17 Typ. Max. 0 -12.5 -13.5 Unit dBm avg. dBm avg. dBm avg. ps MHz nm dB dBm avg. dBm avg. dB Reference 7 8 8 6, 9 10
201 1500 770 12 -30 1.5 860 -18
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Notes: 1. The maximum Optical Output Power complies with the IEEE 802.3z specification, and is class 1 laser eye safe. 2. Optical Extinction Ratio is defined as the ratio of the average output optical power of the transmitter in the high ("1") state to the low ("0") state. The transmitter is driven with a Gigabit Ethernet 1250 MBd 8B/10B encoded serial data pattern. This Optical Extinction Ratio is expressed in decibels (dB) by the relationship 10log(Phigh avg/P low avg). 3. These are unfiltered 20-80% values. 4. Laser transmitter pulse response characteristics are specified by an eye diagram (Figure 1). The characteristics include rise time, fall time, pulse overshoot, pulse undershoot, and ringing, all of which are controlled to prevent excessive degradation of the receiver sensitivity. These parameters are specified by the referenced Gigabit Ethernet eye diagram using the required filter. The output optical waveform complies with the requirements of the eye mask discussed in section 38.6.5 and Fig. 38-2 of IEEE 802.3z. 5. CPR is measured in accordance with EIA/TIA-526-14A as referenced in 802.3z, section 38.6.10. 6. TP refers to the compliance point specified in 802.3z, section 38.2.1. 7. The receive sensitivity is measured using a worst case extinction ratio penalty while sampling at the center of the eye. 8. The stressed receiver sensitivity is measured using the conformance test signal defined in 802.3z, section 38.6.11. The conformance test signal is conditioned by applying deterministic jitter and intersymbol interference. 9. The stressed receiver jitter is measured using the conformance test signal defined in 802.3z, section 38.6.11 and set to an average optical power 0.5 dB greater than the specified stressed receiver sensitivity. 10. The 3 dB electrical bandwidth of the receiver is measured using the technique outlined in 802.3z, section 38.6.12. 11. Return loss is defined as the minimum attenuation (dB) of received optical power for energy reflected back into the optical fiber.
HFCT-53D5 Family, 1300 nm FP/Laser, Transmitter Electrical Characteristics
(TA = 0C to +70C, V CC = 4.75 V to 5.25 V) Parameter Supply Current Power Dissipation Data Input Current - Low Data Input Current - High Symbol ICCT PDIST IIL IIH -350 Min. Typ. 65 0.35 0 16 350 Max. 130 0.68 Unit mA W A A Reference
Receiver Electrical Characteristics (TA = 0C to +70C, V CC = 4.75 V to 5.25 V)
Parameter Supply Current Power Dissipation Data Output Voltage - Low Data Output Voltage - High Data Output Rise Time Data Output Fall Time Signal Detect Output Voltage - Low Data Output Voltage - High Symbol ICCR PDISR VOL - V CC VOH - VCC tr tf VOL - V CC VOH - VCC -1.950 -1.045 -1.950 -1.045 Min. Typ. 120 0.53 Max. 140 0.68 -1.620 -0.740 0.40 0.40 -1.620 -0.740 Unit mA W V V ns ns V V 1 2 2 3 3 2 2 Reference
Notes: 1. Power dissipation value is the power dissipated in the receiver itself. It is calculated as the sum of the products of VCC and ICC minus the sum of the products of the output voltages and currents. 2. These outputs are compatible with 10 K, 10 KH, and 100 K ECL and PECL inputs. 3. These are 20-80% values.
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HFCT-53D5 Family, 1300 nm FP-Laser Transmitter Optical Characteristics
(TA = 0C to +70C, VCC = 4.75 V to 5.25 V) Parameter Symbol Output Optical Power 9 m SMF POUT 62.5 m MMF 50 m MMF Optical Extinction Ratio Center Wavelength C Spectral Width - rms Optical Rise/Fall Time tr/t f RIN12 Total Transmitter Jitter Added at TP2 Min. -9.5 -11.5 -11.5 9 1285 Typ. Max. -3 -3 -3 1343 2.8 0.26 -120 227 Unit dBm dBm dBm dB nm nm rms ns dB/Hz ps Reference 1 1 2
3, 4, Fig. 1 5
Receiver Optical Characteristics
(TA = 0C to +70C, VCC = 4.75 V to 5.25 V) Parameter Symbol Input Optical Power PIN Stressed Receiver Sensitivity Stressed Receiver Eye Opening at TP4 Receive Electrical 3 dB Upper Cutoff Frequency Operating Center Wavelength C Return Loss Signal Detect - Asserted PA Signal Detect - Deasserted PD Signal Detect - Hysteresis PA - PD Min. -20 201 1500 1270 12 -30 1.5 1355 -20 Typ. Max. -3 -14.4 Unit dBm avg. dBm avg. ps MHz nm dB dBm avg. dBm avg. dB Reference 6 7 5, 8 9
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Notes: 1. The maximum Optical Output Power complies with the IEEE 802.3z specification, and is class 1 laser eye safe. 2. Optical Extinction Ratio is defined as the ratio of the average output optical power of the transmitter in the high ("1") state to the low ("0") state. The transmitter is driven with a Gigabit Ethernet 1250 MBd 8B/10B encoded serial data pattern. This Optical Extinction Ratio is expressed in decibels (dB) by the relationship 10log(Phigh avg/Plow avg ). 3. These are unfiltered 20-80% values. 4. Laser transmitter pulse response characteristics are specified by an eye diagram (Figure 2). The characteristics include rise time, fall time, pulse overshoot, pulse undershoot, and ringing, all of which are controlled to prevent excessive degradation of the receiver sensitivity. These parameters are specified by the referenced Gigabit Ethernet eye diagram using the required filter. The output optical waveform complies with the requirements of the eye mask discussed in section 38.6.5 and Fig. 38-2 of IEEE 802.3z. 5. TP refers to the compliance point specified in 802.3z, section 38.2.1. 6. The receive sensitivity is measured using a worst case extinction ratio penalty while sampling at the center of the eye. 7. The stressed receiver sensitivity is measured using the conformance test signal defined in 802.3z, section 38.6.11. The conformance test signal is conditioned by applying deterministic jitter and intersymbol interference. 8. The stressed receiver jitter is measured using the conformance test signal defined in 802.3z, section 38.6.11 and set to an average optical power 0.5 dB greater than the specified stressed receive sensitivity. 9. The 3 dB electrical bandwidth of the receiver is measured using the technique outlined in 802.3z, section 38.6.12. 10. Return loss is defined as the minimum attenuation (dB) of received optical power for energy reflected back into the optical fiber.
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Table 1. Pinout Table
Pin Symbol Mounting Pins Functional Description The mounting pins are provided for transceiver mechanical attachment to the circuit board. They are embedded in the nonconductive plastic housing and are not connected to the transceiver internal circuit, nor is there a guaranteed connection to the metallized housing in the EM and FM versions. They should be soldered into plated-through holes on the printed circuit board. Receiver Signal Ground Directly connect this pin to receiver signal ground plane. (For HFBR-53D5, VEER = VEET ) Receiver Data Out RD+ is an open-emitter output circuit. Terminate this high-speed differential PECL output with standard PECL techniques at the follow-on device input pin. Receiver Data Out Bar RD- is an open-emitter output circuit. Terminate this high-speed differential PECL output with standard PECL techniques at the follow-on device input pin. Signal Detect Normal optical input levels to the receiver result in a logic "1" output, VOH, asserted. Low input optical levels to the receiver result in a fault condition indicated by a logic "0" output VOL, deasserted. Signal Detect is a single-ended PECL output. SD can be terminated with standard PECL techniques via 50 to VCCR - 2 V. Alternatively, SD can be loaded with a 270 resistor to VEER to conserve electrical power with small compromise to signal quality. If Signal Detect output is not used, leave it open-circuited. This Signal Detect output can be used to drive a PECL input on an upstream circuit, such as, Signal Detect input or Loss of Signal-bar. Receiver Power Supply Provide +5 Vdc via the recommended receiver power supply filter circuit. Locate the power supply filter circuit as close as possible to the VCCR pin. Transmitter Power Supply Provide +5 Vdc via the recommended transmitter power supply filter circuit. Locate the power supply filter circuit as close as possible to the VCCT pin. Transmitter Data In-Bar Terminate this high-speed differential PECL input with standard PECL techniques at the transmitter input pin. Transmitter Data In Terminate this high-speed differential PECL input with standard PECL techniques at the transmitter input pin. Transmitter Signal Ground Directly connect this pin to the transmitter signal ground plane.
1 = VEER
NORMALIZED AMPLITUDE
1 2
VEER RD+
3
RD-
4
SD
5
VCCR
6
VCCT
7
TD-
8
TD+
9
VEET
1.3 1.0 0.8 0.5 0.2 0 -0.2 0 0.22 0.375 0.625 0.78 NORMALIZED TIME 1.0
2 = RD+ 3 = RD4 = SD 5 = VCCR 6 = VCCT 7 = TD8 = TD+ 9 = VEET
NIC RX
TX NIC TOP VIEW
NIC = NO INTERNAL CONNECTION (MOUNTING PINS)
Figure 1. Transmitter Optical Eye Diagram Mask.
Figure 2. Pin-Out.
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3.3 Vdc + C5 0.1 F VEET LASER DRIVER CIRCUIT TD+ PECL INPUT TD- 7 C10 R4 191 R1 191 L2 C2 0.1 F VCCR 5 C1 0.1 F
SIGNAL DETECT CIRCUIT
GND
5 Vdc R3 68 R2 68 C9 0.01 F 50 0.01 F R13 150 5 Vdc C3 0.1 F + C4 10 F R12 150 OUTPUT DRIVER TDVCC2 VEE2 TD+
9 8
50
CLOCK SYNTHESIS CIRCUIT PARALLEL TO SERIAL CIRCUIT
HFBR/HFCT-53D5 FIBER-OPTIC TRANSCEIVER
VCCT
6
1 H L1 + C8* 10 F* 1 H
HDMP-1636A/-1646A SERIAL/DE-SERIALIZER (SERDES - 10 BIT TRANSCEIVER)
SD 4 R9 270 RD- 3
TO SIGNAL DETECT (SD) INPUT AT UPPER-LEVEL-IC
50 C12 0.01 F R14 100 C11 0.01 F 50
RDINPUT BUFFER RD+
PREAMPLIFIER
POSTAMPLIFIER
CLOCK RECOVERY CIRCUIT SERIAL TO PARALLEL CIRCUIT
RD+ 2 1 V
EER
R11 270
R10 270
SEE HDMP-1636A/-1646A DATA SHEET FOR DETAILS ABOUT THIS TRANSCEIVER IC.
NOTES: *C8 IS AN OPTIONAL BYPASS CAPACITOR FOR ADDITIONAL LOW-FREQUENCY NOISE FILTERING. USE SURFACE-MOUNT COMPONENTS FOR OPTIMUM HIGH-FREQUENCY PERFORMANCE. USE 50 MICROSTRIP OR STRIPLINE FOR SIGNAL PATHS. LOCATE 50 TERMINATIONS AT THE INPUTS OF RECEIVING UNITS.
Figure 3. Recommended Gigabit/sec Ethernet HFBR/HFCT-53D5 Fiber-Optic Transceiver and HDMP-1636A/1646A SERDES Integrated Circuit Transceiver Interface and Power Supply Filter Circuits.
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(2X) o 20.32 0.800
1.9 0.1 0.075 0.004
-A-
O0.000 M A
20.32 0.800
(9X) o
0.8 0.1 0.032 0.004
O0.000 M A
(8X) 2.54 0.100 TOP VIEW
Figure 4. Recommended Board Layout Hole Pattern.
A
TX XXXX-XXXX ZZZZZ LASER PROD 21CFR(J) CLASS 1 COUNTRY OF ORIGIN YYWW RX KEY: YYWW = DATE CODE FOR MULTIMODE MODULE: XXXX-XXXX = HFBR-53xx ZZZZ = 850 nm
39.6 (1.56) MAX.
12.7 (0.50)
4.7 (0.185)
25.4 (1.00)MAX.
AREA RESERVED FOR PROCESS PLUG
12.7 (0.50)
A
2.5 SLOT DEPTH (0.10)
SLOT WIDTH
2.0 0.1 (0.079 0.004)
(0.010
+0.1 0.25 -0.05 +0.004 -0.002
)
9.8 MAX. (0.386)
3.3 0.38 (0.130 0.015) +0.25 0.46 -0.05 +0.010 -0.002 20.32 (0.800)
0.51 (0.020) 15.8 0.15 (0.622 0.006) 2X
9X
(0.018
)
(0.050
+0.25 1.27 -0.05 +0.010 -0.002
)
20.32 23.8 (0.937) (0.800)
8X 2.54 (0.100)
20.32 (0.800)
2X
1.3 (0.051)
DIMENSIONS ARE IN MILLIMETERS (INCHES). ALL DIMENSIONS ARE 0.025 mm UNLESS OTHERWISE SPECIFIED.
Figure 5. Package Outline Drawing for HFBR-53D5.
13
A
TX
XXXX-XXXX ZZZZZ LASER PROD 21CFR(J) CLASS 1 COUNTRY OF ORIGIN YYWW RX
KEY: YYWW = DATE CODE FOR MULTIMODE MODULE: XXXX-XXXX = HFBR-53xx ZZZZ = 850 nm FOR SINGLEMODE MODULES: XXXX-XXXX = HFCT-53xx ZZZZ = 1300 nm
29.6 UNCOMPRESSED (1.16) 39.6 (1.56) MAX. 12.7 (0.50) 4.7 (0.185)
25.4 (1.00)MAX.
AREA RESERVED FOR PROCESS PLUG
12.7 (0.50)
A
SLOT WIDTH +0.1 0.25 -0.05 +0.004 -0.002 10.2 MAX. (0.40)
2.0 0.1 (0.079 0.004)
(0.010
)
2.09 UNCOMPRESSED (0.08)
9.8 MAX. (0.386) 1.3 (0.05) 3.3 0.38 (0.130 0.015) +0.25 0.46 -0.05 +0.010 -0.002 20.32 (0.80) 15.8 0.15 (0.622 0.006) 2X
9X
(0.018
)
(0.050
+0.25 1.27 -0.05 +0.010 -0.002
)
20.32 23.8 (0.937) (0.800)
8X 2.54 (0.100)
20.32 (0.800)
2X
1.3 (0.051)
DIMENSIONS ARE IN MILLIMETERS (INCHES). ALL DIMENSIONS ARE 0.025 mm UNLESS OTHERWISE SPECIFIED.
Figure 6. Package Outline for HFBR/HFCT-53D5EM.
14
A
2X 0.8 (0.032)
0.8 (0.032)
2X
(0.43
9.4 (0.37) 6.35 (0.25) MODULE PROTRUSION 27.4 0.50 (1.08 0.02)
+0.5 10.9 -0.25 +0.02 -0.01
)
PCB BOTTOM VIEW
Figure 7. Suggested Module Positioning and Panel Cut-out for HFBR/HFCT-53D5EM.
15
A
TX
XXXX-XXXX ZZZZZ LASER PROD 21CFR(J) CLASS 1 COUNTRY OF ORIGIN YYWW RX
KEY: YYWW = DATE CODE FOR MULTIMODE MODULE: XXXX-XXXX = HFBR-53xx ZZZZ = 850 nm FOR SINGLEMODE MODULES: XXXX-XXXX = HFCT-53xx ZZZZ = 1300 nm
39.6 (1.56) MAX.
1.01 (0.40)
12.7 (0.50) 4.7 (0.185)
25.4 (1.00) MAX.
AREA RESERVED FOR PROCESS PLUG
29.7 (1.17)
12.7 (0.50)
A
25.8 (1.02) MAX. +0.1 0.25 -0.05 +0.004 -0.002 10.2 MAX. (0.40)
SLOT WIDTH 2.2 SLOT DEPTH (0.09)
2.0 0.1 (0.079 0.004)
(0.010
)
14.4 (0.57)
3.3 0.38 (0.130 0.015) +0.25 0.46 -0.05 +0.010 -0.002
9.8 MAX. (0.386) 20.32 (0.800)
22.0 (0.87) 15.8 0.15 (0.622 0.006) 2X
9X
(0.018
)
AREA RESERVED FOR PROCESS PLUG
(0.050
+0.25 1.27 -0.05 +0.010 -0.002
)
20.32 23.8 (0.937) (0.800)
8X 2.54 (0.100)
20.32 (0.800)
2X
1.3 (0.051)
DIMENSIONS ARE IN MILLIMETERS (INCHES). ALL DIMENSIONS ARE 0.025 mm UNLESS OTHERWISE SPECIFIED.
Figure 8. Package Outline for HFBR/HFCT-53D5FM.
DIMENSION SHOWN FOR MOUNTING MODULE 1.98 FLUSH TO PANEL. THICKER PANEL WILL (0.078) RECESS MODULE. THINNER PANEL WILL PROTRUDE MODULE.
A
1.27 OPTIONAL SEPTUM (0.05) 30.2 (1.19)
KEEP OUT ZONE
0.36 (0.014)
10.82 (0.426)
14.73 (0.58)
13.82 (0.544)
26.4 (1.04)
BOTTOM SIDE OF PCB 12.0 (0.47) DIMENSIONS ARE IN MILLIMETERS (INCHES). ALL DIMENSIONS ARE 0.025 mm UNLESS OTHERWISE SPECIFIED.
Figure 9. Suggested Module Positioning and Panel Cut-out for HFBR/HFCT-53D5FM.
Ordering Information
850 nm VCSEL HFBR-53D5 HFBR-53D5EM HFBR-53D5FM 1300 nm FP Laser HFCT-53D5EM HFCT-53D5FM (SX - Short Wavelength Laser) No shield, plastic housing. Extended/protruding shield, metallized housing. Flush shield, metallized housing. (LX - Long Wavelength Laser) Extended/protruding shield, metallized housing. Flush shield, metallized housing.
www.semiconductor.agilent.com Data subject to change. Copyright (c) 1999 Agilent Technologies, Inc. 5968-3183E (11/99)

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