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OCP
DTR-2488-SM2-LC/LS-W-G-CWDM
OC-48/STM-16 2x10 SFF Single Mode CWDM Transceivers
Features
Eight (8) Wavelength CWDM Transceivers Compliant with SONET/SDH OC-48/STM-16 IR-2/S-16.2 & LR-2/L-16.2 Specifications Eye Safe (Class I Laser Safety) Multi-sourced 2x10 Package Style Duplex LC Optical Interface Differential Bias Monitor Voltage & Back Facet Monitor Voltage Outputs Receiver Power Monitor Output AC Coupling or DC Coupling Option to LV-PECL DATA Compatible Interface LV-TTL SIGNAL DETECT Output Single +3.3V Power Supply
Description
The DTR-2488-SM2-LC/LS-W-G-CWDM SFF series of fiber optic transceivers provide a quick and reliable interface for intermediate reach (IR-2) and long reach (LR-2) applications. Products under this series are compliant with SONET/SDH OC-48/STM-16 (2.488Gb/s) standards for IR-2/S-16.2 intermediate reach and LR-2/L-16.2 long reach applications ,and are available in eight (8) wavelengths: 1470nm, 1490nm, 1510nm, 1530nm, 1550nm, 1570nm, 1590nm and 1610nm. Two performance options are available. In option L0, a guaranteed minimum optical power of -5dBm is offered with a PIN receiver that corresponds to a link distance of 15km (assuming fiber loss of 0.25dB/km). In option HP, a guaranteed minimum optical power of -2dBm is offered with an APD receiver that corresponds to a link distance of 80km (assuming fiber loss of 0.25dB/km). All modules satisfy Class I Laser Safety requirements in accordance with the U.S. FDA/CDRH and international IEC-60825 standards. The transmit and receive functions are contained in a narrow width two-row, 20-pin (2x10) package with a duplex LC optical interface. The receptacle fits into an RJ-45 form factor outline. The 20-pin configuration is in conformance to the SFF MSA. The transmitter design incorporates all the necessary control and driver circuitry for converting differential data to light. The receiver uses an InGaAs/InP PIN photodiode for IR-2 applications and an APD photodiode for LR-2 applications to covert the light signal into an electrical current which is amplified and regenerated into differential data outputs. ACcoupled transmit and receive DATA interface is recommended for compatibility with LV-PECL signal levels. An option for DC-coupled interface is also available. LV-TTL SIGNAL DETECT function which indicates loss of optical input is also provided. The transceivers operate from a single +3.3V power supply over an operating case temperature range of -5C to +70C. The package is made of metal for excellent EMI immunity.
Absolute Maximum Ratings
Parameter Storage Temperature Operating Case Temperature Maximum Input Optical Power (LR-2 only, 60 seconds max.) Supply Voltage Input Voltage Output Current Lead Soldering Temperature & Time Symbol Tst Top Pin, max VCC Vin IO Minimum - 40 -5 0 0 Maximum + 85 + 70 + 3.0 + 5.0 VCC 50 Units C C dBm V V mA
260C, 10 seconds
Optical Communication Products, Inc.
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21737-0266, Rev. D 07-06-2005
DTR-2488-SM2-LC/LS-W-G-CWDM
Transmitter Performance Characteristics (over Operating Case Temperature Range, VCC = 3.13 to 3.47V)
All parameters guaranteed only at typical data rate
Parameter Operating Data Rate
1
Symbol B L0 HP 1470 1490 1510 1530 1550 1570 1590 1610 Po Phi /Plo
Minimum - 5.0 - 2.0 8.2 1464 1484 1504 1524 1544 1564 1584 1604
Typical 2.488 - 2.0 0 1470 1490 1510 1530 1550 1570 1590 1610 -
Maximum 0 + 3.0 1477.5 1497.5 1517.5 1537.5 1557.5 1577.5 1597.5 1617.5 1.0 1.0 2.0
Units Gb/s dBm dB
Average Optical Output Power (coupled into single mode fiber) 50% duty cycle Extinction Ratio
Center Wavelength
c
nm
Spectral Width (-20dB) Side Mode Suppression Ratio Dispersion Penalty IR-2 LR-22
20 SMSR -
30 -
nm dB dB
1
Optical Output Eye Compliant with Telcordia GR-253-CORE and ITU-T Recommendation G.957 Data rate ranges from 155Mb/s to 2.7Gb/s. However, some degradation may be incurred in overall performance. 2 Specified at 1600ps/nm dispersion, which corresponds to the approximate worse-case dispersion for 80km G.652/G.654 fiber over the wavelength range of 1464 -1617.5nm.
Receiver Performance Characteristics
Parameter Operating Data Rate
1
(over Operating Case Temperature Range, VCC = 3.13 to 3.47V) All parameters guaranteed only at typical data rate
Symbol B IR-2 LR-2 IR-2 LR-2 Increasing Light input Decreasing Light Input Increasing Light input Decreasing Light Input Pmin Pmax Psd+ PsdPsd+ Psd Minimum - 19.0 - 29.0 0 - 8.0 - 42.0 - 42.0 3.0 0.5 1260 Typical 2.488 - 31.0 + 1.0 1.0 Maximum - 19.0 - 29.0 100 1620 s dB nm dBm Units Gb/s dBm dBm
Receiver Sensitivity (10-10 BER)2 Maximum Input Optical Power (10-10 BER)2 SIGNAL DETECT Thresholds SIGNAL DETECT Timing SIGNAL DETECT Hysteresis Wavelength of Operation Jitter Tolerance & Transfer Function
1 2
IR-2 LR-2
Compliant with ITU Recommendation G.958
Data rate ranges from 155Mb/s to 2.7Gb/s. However, some degradation may be incurred in overall performance. Specified in average input optical power and measured at 2.488Gb/s and 1550nm with 223-1 PRBS.
Laser Safety: All transmitters are Class I Laser products per FDA/CDRH and IEC-60825 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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DTR-2488-SM2-LC/LS-W-G-CWDM
Transmitter Electrical Interface (over Operating Case Temperature Range, VCC = 3.13 to 3.47V)
Parameter Input Voltage Swing between DATA+ & DATAInput Impedance Transmitter Disable Voltage Transmitter Enable Voltage Differential Bias Monitor Voltage (Ta = 25C) Differential Back Facet Monitor Voltage Symbol VINDIF ZIL VDIS VEN VBM+ - VBMVFM+ - VFMMinimum 0.30 VCC - 1.3 0 0.10 Typical 0.80 50 30 Maximum 1.60 VCC 0.8 0.70 Units VP-P V V V mV
Receiver Electrical Interface (over Operating Case Temperature Range, VCC = 3.13 to 3.47V)
Parameter Output Voltage Swing Output Current Output HIGH Voltage (LV-TTL) Output LOW Voltage (LV-TTL) Receiver Power Monitor Current
1 3 1,2
Symbol Vp-p IO VOH VOL IRPM
Minimum 0.3 2.0 0 0.6
Typical 0.85
Maximum 0.8 25 VCC 0.4 1.3
Units V mA V V /W
Single ended into 50 load. 2 DC-coupled version is also available (50 to VCC - 2V termination) with output HIGH voltage level of VCC - 1.10V min. and VCC - 0.90V max. The output LOW voltage (LV-PECL) is VCC - 1.84V min. and VCC - 1.60V max. 3 Power input, RPM is specified from -29dBm to -17dBm for APD and 0dBm to -19dBm for PIN.
Electrical Power Supply Characteristics (over Operating Case Temperature Range, VCC = 3.13 to 3.47V)
Parameter Supply Voltage Supply Current
1 1
Symbol VCC ICC
Minimum 3.13 -
Typical 3.3 195
Maximum 3.47 310
Units V mA
Supply current does not include termination resistor current for DC-coupled version.
Pin Assignments
PIN 1 2 3 4 5 6 7 8 9 FUNCTION RPM (Reciever Power Monitor) RX GND RX GND N/C N/C RX GND VCCRX SD (RX SIGNAL DETECT) RD- ( RX DATA OUT-) PIN 11 VCCTX 12 13 14 15 16 17 18 19 20 TX GND TX DISABLE FUNCTION
Laser Bias & Laser Back Facet Monitor Circuits
VCC LD Ib BM+ 3k 10 3k BMVCC PD 3k Imon 200 3k FMControl Circuit FM+
TD+ (TX DATA IN+) TD- (TX DATA IN-) TX GND BM- (BIAS MONITOR-) BM+ (BIAS MONITOR +)
Bias Circuit
GND
FM- (FACET MONITOR-) FM+ (FACET MONITOR+) 10 RD+ ( RX DATA OUT+)
GND
LD Bias Monitor Circuit
LD Back Facet Monitor Circuit
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21737-0266, Rev. D 07-06-2005
DTR-2488-SM2-LC/LS-W-G-CWDM
Receiver Power Monitor option 1
Vcc +3.3V
1H coil or ferrite inductor 0.1
+
Fig.1 DC-coupled modules
Capacitor values in F, Resistor values in
Vcc
10
0.1 160 160
DTR-2488
External resistor
1H coil or
+ ferrite inductor 11 7
1
14 TD+
50 line 50 line 50 line 50 line
100 LV-PECL
10 SIGNAL DETECT
0.1
8
100
15 TD-
LV-PECL
DTR-2488-SM2
1
10 RD+
806
Recommended external current monitor resistor value is 1k
RPM (see Power Monitor Options)
9 GND 2,3,6 POSTS 12,16
RD-
160
160
chassis ground
Receiver Power Monitor option 2
Vcc +3.3V
Vcc
1H coil or ferrite inductor 0.1
+
Fig.2 AC-coupled modules
Capacitor values in F, Resistor values in
depends on SERDES
10
0.1 160 160
DTR-2488
R1 1
AD8551 or equivalent
R1
1H coil or
7 11 14 TD+
50 line 50 line 50 line 50 line
100
2N3906 or equivalent
+ ferrite inductor
10
0.1
100
15 TD8 DTR-2488-SM2
RPM R2
SIGNAL DETECT
10 RD+
SERDES
806
R1: 510 R2: 2k recommended
1 RPM (see Power Monitor Options)
9
RD-
GND 2,3,6 POSTS 12,16
depends on SERDES
chassis ground
Application Notes
DATA interface (DC-coupled modules): The interface circuit for standard DC-coupled modules with direct-coupled LV-PECL interface is shown in Fig. 1. The transmitter input has internal 50 termination. DATA interface (AC-coupled modules): For modules with AC coupling option, both transmitter and receiver interfaces have internal bias, 50 termination and AC coupling capacitors. The transmitter can be connected directly to the driving SERDES as shown in Fig. 2. The receiver can be connected directly to the external 50 loads (termination resistor of the SERDES). For best performance, both DATA+ & DATAshould be used. SIGNAL DETECT: The SIGNAL DETECT circuit monitors the incoming optical signal level and generates a logic LOW signal when an insufficient photocurrent is produced. The output is LV-TTL with no termination required. TX DISABLE: The transmitter is normally enabled (i.e. when the TX DISABLE control input is not connected). When the TX DISABLE control input voltage is higher than VCC - 1.3V, the laser is turned off independent of the input data. 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 DTR transceiver module as possible. The module case ground is internally AC-coupled to the circuit ground.
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21737-0266, Rev. D 07-06-2005
DTR-2488-SM2-LC/LS-W-G-CWDM
Package without EMI Shield (LC)
[13.56 MAX] .535 MAX TX 48.39 1.905 10.49 .413
RX 13.11 .516 6.25 .246 9.35 .37
[9.78 MAX] .385 MAX
0.38 .015 TYP (X)* 0.25 2x .010 (Y)*
PIN 11
1.02 2X .040
2X
2.54 .100
10.16 .400
*(x) & (y): See Pin Length Option Table in Ordering Information
PIN 1 1.78 .070 TYP 8.89 .350 18.54 .730
1.91 2X .075
PIN 10 [0.46] .018
Dimensions in inches [mm] Default tolerances: .xxx = + .005", .xx = + .01"
Package with EMI Shield (LS)
[13.56 MAX] .535 MAX
48.39 1.905
10.49 .413
RX TX 3.5 .14 6.25 .246 [11] .43
[9.78 MAX] .385 MAX
9.65 .38
0.38 .015 TYP (X)* 0.25 2X .010 PIN 11 1.02 .040
(Y)* 2.54 2X .100
2X
10.16 .400
[13.59 +0/-0.254] .535 +0/-.01
15.6 .62
*(x) & (y): See Pin Length Option Table in Ordering Information Dimensions in inches [mm] Default tolerances: .xxx = + .005", .xx = + .01"
1.91 2X .075
PIN 10 [0.46] 0.18
PIN 1 1.78 .070 TYP 8.89 .350 18.54 .730
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21737-0266, Rev. D 07-06-2005
DTR-2488-SM2-LC/LS-W-G-CWDM
Package with Extended EMI Shield (S1)
48.39 1.905 15.11 .60
RX
[13.56 MAX] .535 MAX
14.09 .555
TX 15.01 .59 3.6 .14 9.65 .38
6.25 .246
[9.78 MAX] .385 MAX
11.9 .47
0.38 .015 TYP (X)* PIN 11 (Y)* 1.02 .040 2.54 .100
2X
2X
10.16 .400
[13.59 +0/-0.254] .535 +0/-.01
15.6 .62
*(x) & (y): See Pin Length Option Table in Ordering Information Dimensions in inches [mm] Default tolerances: .xxx = + .005", .xx = + .01"
1.91 .075
PIN 10 [0.46] 0.18 TYP
PIN 1 1.78 .070 TYP 8.89 .350 18.54 .730
Ordering Information
DTR - 2488 - SM2 - Lx - Ln - DR - XX - Wp - G - Cxxx - S1
Connector LC : w/o EMI Shield LS : w/ EMI Shield or w/ Extended S1 Shield Light Output Option L0 : -5 to 0dBm (IR-2) HP : -2 to +3dBm (LR-2) Distance Option (see Note) IR2 : IR-2/S-16.2 (42/15km) LR2 : LR-2/L-16.2 (80km) Pin Length Option Table
Options (p) "blank" 5 8 Pin Length (x) Inches 0.140 + 0.010 0.155 + 0.010 0.180 + 0.010 Millimeters 3.56 + 0.250 3.94 + 0.250 4.57 + 0.250 Post Length (y) Inches Millimeters
Extended Shield "Blank" : None "S1" : Extended EMI Shield Center Wavelength C470: 1470nm C490: 1490nm C510: 1510nm C530: 1530nm C550: 1550nm C570: 1570nm C590: 1590nm C610: 1610nm see Pin Length Option Table Receiver Coupling Option "Blank" : DC Coupling "AC" : AC Coupling
0.125 + 0.010 - 0.005 0.155 + 0.010 - 0.005 0.180 + 0.010 - 0.005
3.17 + 0.250 - 0.125 3.94 + 0.250 - 0.125 4.57 + 0.250 - 0.125
Note: These are target distances to be used for classification and not for specification, per Telcordia GR-253-CORE/ITU-T Recommendation G.957.
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) 2005, Optical Communication Products, Inc.
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21737-0266, Rev. D 07-06-2005

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