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OCP
DTR-1250-SM-GB-I
5V GBIC Long Distance Single Mode Transceivers
Features
Compliant with GBIC Specification, Rev. 5.5 Compliant with IEEE 802.3z 1000BASE-LX Specifications for Gigabit Ethernet (except for higher TX optical power and 1550nm center wavelength option) Compliant with Optical Interface Requirements in Annex F of GBIC Specification, Rev. 5.5 (except for higher TX optical power and 1550nm center wavelength option) Compliant with GBIC Serial Module Definition Protocol (Module Definition 4 in Annex D) Hot-pluggable Four Distance Options with Single Mode Fiber: 42km, 68km, 72km and 80km (Please see note on Distance in Ordering Information section) Excellent EMI & ESD Protection Eye Safe (Class I or 1M Laser Safety)
Description
The DTR-1250-SM-GB-I product family of GBICs provides long haul, single mode solutions for 1000BASE-LX Gigabit Ethernet ports in a networking switch. OCP offers four distance options to support 42km, 68km, 72km and 80km links in the networking infrastructure. Option "H3" uses a 1310nm DFB laser and provides a minimum optical link budget of 19dB, corresponding to a minimum distance of 42km, assuming fiber loss of 0.35dB/km. Options "H5", "H7" and "H8" use 1550nm DFB lasers, and provide minimum optical link budgets of 21dB, 22dB and 24dB respectively. Each corresponds to minimum distances of 68km, 72km and 80km respectively, assuming fiber loss of 0.25dB/km. All transceivers are Class I Laser products per U.S. FDA/CDRH standards. The "H3", "H5" and "H7" transceivers are Class I Laser products while the "H8" transceivers are Class 1M Laser products per international IEC-825 standards. The DTR-1250-SM-GB-I transceivers are fully compliant with Annex F of GBIC specification, Rev. 5.5 (except for higher TX optical power and 1550nm center wavelength option). The transceivers connect to standard 20-pad GBIC connectors for hot plug capability. This allows the system designer to make configuration changes or maintenance by simply plugging in different types of GBICs without removing the power supply from the host system. The transceivers operate from a single +5V power supply over an operating case temperature range of -5C to +70C.
Absolute Maximum Ratings
Parameter Storage Temperature Operating Case Temperature Supply Voltage Input Voltage Symbol Tst Top VDD Vin Minimum - 40 -5 0 0 Maximum + 85 + 70 + 6.0 VDD Units C C V V
Optical Communication Products, Inc.
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Transmitter Performance Characteristics (over Operating Case Temperature, VCC = 4.75 to 5.25V)
All parameters guaranteed only at typical data rate
Parameter Operating Data Rate
1
Symbol B H3 H5, H7 H8 H3 H5, H7, H8 Po
Minimum - 4.0 - 2.0 0 1280 1500 9 -
Typical 1250 1310 1550 -
Maximum + 1.0 + 3.0 + 5.0 1335 1580 1.0 - 35.0 80 227 - 120 1.2 1.5
Units Mb/s dBm
Optical Output Power2
Center Wavelength Spectral Width (-20dB) Extinction Ratio
c 20 Phi/Plo Pdis DJ TJ RIN
nm nm dB dBm ps ps dB/Hz dB
Transmitter Disabled Optical Output Power 2 Deterministic Jitter Total Jitter Relative Intensity Noise Dispersion Penalty3 H5, H7 H8
-
1
Transmitter Output Eye Compliant with Eye Mask Defined in IEEE 802.3z standard Data rate ranges from 125Mb/s to 1300Mb/s. However, some degradation may be incurred in overall performance. 2 Measured average power coupled into single mode fiber with 27-1 PRBS at 1250Mb/s. 3 Specified at 1360ps/nm (for H5), 1440ps/nm (for H7) and 1600ps/nm (for H8) dispersion, which corresponds to the approximate worst-case dispersion for 68km, 72km and 80km G.652/G.654 fiber respectively over the wavelength range of 1500 to 1580nm.
Receiver Performance Characteristics (over Operating Case Temperature, VCC = 4.75 to 5.25V)
All parameters guaranteed only at typical data rate
Parameter Operating Data Rate1 Minimum Input Optical Power (10-12 BER)2 Maximum Input Optical Power (10-12 BER)2 RX_LOS Thresholds Increasing Light Input Decreasing Light Input H3, H5 H7, H8 H3, H5 H7, H8 Symbol B Pmin Pmax Plos+ PlosDJ TJ Minimum - 23.0 - 24.0 - 3.0 - 35.0 0.5 1100 12 Typical 1250 Maximum - 23.0 - 24.0 170 266 1600 Units Mb/s dBm dBm dBm dBm dB ps ps nm dB
RX_LOS Hysteresis Deterministic Jitter Total Jitter Wavelength of Operation Optical Return Loss Stressed Receiver Sensitivity
1 2
Compliant with IEEE 802.3z standard
Data rate ranges from 125Mb/s to 1300Mb/s. However, some degradation may be incurred in overall performance. Measured with 27-1 PRBS at 1250Mb/s at 1310nm for H3, 1550nm for H5, H7 and H8.
Laser Safety: All transceivers are Class I Laser products per FDA/CDRH standards. The H3, H5 and H7 transceivers are Class I Laser products while the H8 transceivers are Class 1M Laser products per IEC-825 standards. They must be operated under specified operating conditions.
Optical Communication Products, Inc.
DATE OF MANUFACTURE: MANUFACTURED IN THE USA This product complies with 21 CFR 1040.10 and 1040.11 Meets Class I Laser Safety Requirements
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Transmitter Electrical Interface (over Operating Case Temperature, VCC = 4.75 to 5.25V)
Parameter Input Voltage Swing (+TX_DAT & -TX_DAT) Input HIGH Voltage (TX_DISABLE) Output HIGH Voltage (TX_FAULT)3 Output LOW Voltage (TX_FAULT)
1 3 2 1
Symbol VPP-DIF VIH VIL VOH VOL
Minimum 0.65 2.0 0 VCC - 0.5 0
Typical -
Maximum 2.0 VDD + 0.3 0.8 VCC + 0.3 0.5
Units V V V V V
Input LOW Voltage (TX_DISABLE)2
Differential peak-to-peak voltage. 2 There is an internal 5.1k pull-up resistor to VDDT. 3 Open collector compatible, 4.7 to 10k pull-up resistor to VCC (Host Supply Voltage).
Receiver Electrical Interface (over Operating Case Temperature, VCC = 4.75 to 5.25V)
Parameter Output Voltage Swing (+RX_DAT & -RX_DAT) Output HIGH Voltage (RX_LOS)
1 2 1
Symbol VPP-DIF VOH VOL
Minimum 0.60 VCC - 0.5 0
Typical -
Maximum 2.0 VCC + 0.3 0.5
Units Vp-p V V
Output LOW Voltage (RX_LOS)2
2
Differential peak-to-peak voltage. Open collector compatible, 4.7 to 10k pull-up resistor to VCC (Host Supply Voltage).
Electrical Power Supply Characteristics (over Operating Case Temperature, VCC = 4.75 to 5.25V)
Parameter Supply Voltage Supply Current Symbol VDD IDD Minimum 4.75 Typical 5.0 200 Maximum 5.25 270 Units V mA
Module Definition
Module Definition 4 MOD_DEF(0) pin 4 TTL LOW MOD_DEF(1) pin 5 SCL MOD_DEF(2) pin 6 SDA Interpretation by Host Serial module definition protocol
Pin Assignments
PIN 1 2 3 4 5 6 7 8 9 10 FUNCTION RX_LOS (RX LOSS OF SIGNAL) RGND (RX GROUND) RGND (RX GROUND) MOD_DEF(0) MOD_DEF(1) MOD_DEF(2) TX_DISABLE TGND (TX GROUND) TGND (TX GROUND) TX_FAULT PIN 11 12 13 14 15 16 17 18 19 20 FUNCTION RGND (RX GROUND) -RX_DAT (RX DATA OUT -) +RX_DAT (RX DATA OUT +) RGND (RX GROUND) VDDR (RX SUPPLY VOLTAGE) VDDT (TX SUPPLY VOLTAGE) TGND (TX GROUND) +TX_DAT (TX DATA IN +) -TX_DAT (TX DATA IN -) TGND (TX GROUND)
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Example of host board schematic
TTL LOW (internally connected to GND)
1H coil or ferrite bead (<0.2 series resistance)
SCL SDA 4 15
0.1
VCC (HOST)
4.7 - 10k
5
6
4.7 - 10k TX_FAULT
VDD (5V)
+
10
+
10
10 16 1
0.1
+
10
0.1
RX_LOS
GBIC
75 line +TX_DAT 75 line -TX_DAT TX_DISABLE 19 7 2,3,8,9,11,14,17,20 18 13
75 line +RX_DAT to 75 load 75 line 12 -RX_DAT to 75 load
Application Notes
Connection of the GBIC transceiver to the host system: The GBIC's 20-pad connector and two guide tabs connected to the transceiver's circuit ground connect the GBIC to the host system. The two ground tabs make contact to the host circuit ground before the connector pad and discharge any possible component-damaging static electricity. Additionally, surge currents are eliminated by using a special slow start circuit and two-stage contact sequence where operational signals and grounds make contact prior to the power supply (as specified in the GBIC specification, Rev. 5.5). Electrical interface: All signal interfaces are compliant with the GBIC specification, Rev. 5.5. The high speed DATA interface is differential AC-coupled and can be directly connected to either a 5V or 3.3V SERDES IC. All low speed control and sense input/output signals are open collector TTL compatible and should be pulled up with a 4.7 - 10k resistor on the host board. Loss of Signal (LOS): The Loss of Signal circuit monitors the level of the incoming optical signal and generates a logic HIGH when an insufficient photocurrent is produced. TX_FAULT: The output indicates LOW when the transmitter is operating normally, and HIGH when the transmitter or laser current is excessive. TX_FAULT is an open collector/drain output and should be pulled up with a 4.7 - 10k resistor on the host board. TX_DISABLE: When the TX_DISABLE pin is at logic HIGH, the transmitter optical output is disabled (less than -35dBm). Serial Identification: The DTR-1250-SM-GB-I transceivers are compliant with Annex D (Module Definition 4) of the GBIC specification, Rev. 5.5, which defines the Serial Identification Protocol. The module definition of GBIC is indicated by the three module definition pins, MOD_DEF(0), MOD_DEF(1) and MOD_DEF(2). Module Definition 4 specifies a serial definition protocol with a two-wire I2C serial interface; upon power up, MOD_DEF(1:2) appear as NC (no connection), and MOD_DEF(0) is TTL LOW. When the host system detects this condition, it activates the serial protocol and generates the serial clock signal (SCL). The positive edge clocks data into the EEPROM segments of the GBIC that are not write protected, and the negative edge clocks data from the GBIC. The serial data signal (SDA) is for serial data transfer. The host uses SDA in conjunction with SCL to mark the start and end of serial protocol activation. The data transfer protocol and the details of the mandatory and vendor specific data structures are defined in Annex D of the GBIC specification, Rev. 5.5. Power supply and grounding: The power supply line should be well-filtered. All 0.1F power supply bypass capacitors should be as close to the GBIC transceiver module as possible.
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Package Outline
12 .472 12.7 .500 8.9 .35 1 2X .04 37.1 MAX 1.46 MAX 25.4 1.000
8.18 .322 1.27 0 - 0.10 + 2X .050 - .000 .004
13.54 MAX .533 MAX
1.63 - 0 0.10 + .000 .064 -.004 GUIDE SLOTS HEIGHT PIN 10 PIN 1 3.05+0.05 .120 + .002 58 MAX 2.28 MAX
PIN 20 27.7 1.09 GUIDE SLOTS WIDTH
+0.04 10.06 - 0.20 .002 .396+ -.008 0 30.48 - 0.13
+.000 1.200 - .005
Dimensions in inches [mm] Default tolerances: .xxx = + .005", .xx = + .01"
Ordering Information
Model Name DTR-1250-SM-GB-H3-I DTR-1250-SM-GB-H5-I DTR-1250-SM-GB-H7-I DTR-1250-SM-GB-H8-I
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Nominal Wavelength 1310nm 1550nm 1550nm 1550nm
Optical Link Power Budget 19dB min. 21dB min. 22dB min. 24dB min.
Distance1 42km2 68km3 72km3 80km3
The indicated transmission distance is for guidelines only, not guaranteed. The exact distance is dependent on the fiber loss, connector and splice loss, and allocated system penalty. Longer distances can be supported if the optical link power budget is satisfied. 2 Assuming a total connector and splice loss of 2dB, total system penalty of 2dB and fiber cable loss of 0.35dB/km. 3 Assuming a total connector and splice loss of 2dB, total system penalty of 2dB and fiber cable loss of 0.25dB/km.
Optical Communication Products, Inc.
6101 Variel Avenue, Woodland Hills, CA 91367, Tel.: 818-251-7100, FAX: 818-251-7111, www.ocp-inc.com
Optical Communication Products, Inc. reserves the right to make changes in equipment design or specifications without notice. Information supplied by Optical Communication Products, Inc. is believed to be accurate and reliable. However, no responsibility is assumed by Optical Communication Products, Inc. for its use nor for any infringements of third parties, which may result from its use. No license is granted by implication or otherwise under any patent right of Optical Communication Products, Inc. (c) 2003, Optical Communication Products, Inc.
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