Digitus SFP Module BiDi SM/SC
Contents
1. pin sorana Certo MOD DEF 0 TTL Low RATE SELECT Open Circuit RX LOS Receiver Loss of Signal TTL High open collector RX DIGITUS Eye Safety Mark The LS4 series singlemode transceiver is a class 1 laser product It complies with EN 60825 1 and FDA Required Mark 21 CFR 1040 10 and 1040 11 In order to meet laser safety requirements the transceiver shall be operated Class 1 Laser Product within the Absolute Maximum Ratings Complies with 21 CFR 1040 10 and 1040 11 Caution All adjustments have been done at the factory before the shipment of the devices No maintenance and user serviceable part is required Tampering with and modifying the performance of the device will result in voided product warranty Note All information contained in this document is subject to change without notice2. Features WR Compliant with IEEE802 3z Gigabit Ethernet Standard WR Compliant with Fiber Channel 100 SM LC L a standard Industry standard small form pluggable SFP package simplex SC connector Differential LVPECL inputs and outputs Single power supply 3 3V TTL signal detect indicator Hot Pluggable Class 1 laser product complies with EN 60825 1 Ordering Information TX RX INPUT OUTPUT SIGNAL TEMPERATURE LD Type DETECT 1550 1310 AC AC TTL 0 C to70 C 1550 DFB 1550 1310 AC AC TTL 40 C to 85 c 1550 DFB DIGITUS Recommended Operating Conditions PARAMETER SYMBOL MN E Fa Tet Transmitter Electro optical Characteristics Vcc 3 1 V to 3 5 V Te 0 Cto70 C 40 C to 85 C PARAMETER SYMBOL MIN Output Optical Power pe Pout A MAX UNITS O Case Operating Temperature V 300 NIO C IC o o o O lt lt lt Os x a D gt LO ol vi MO 3 gt MAX j ES Y Extinction Ratio 1530 1550 1570 nm O CO D ar 5 N D 01 Pi pa gt 3 o D CD 2 Q mr D 5 3 Spectral Width 20dB UNITS Q UO NOTE LS48 C3S TC N K5 LS48 C35 T1 N K5 NOTE Average Q UW 3 I I Side Mode Suppression Ratio Rise Fall Time 20 80 NO O O C rs f Porr VDIFF A 120 227 Compliant with IEEE802 3z 45 dBm Relative Intensity Noise 0 out TX DISABLE Asserted 4 0 z 0 3 Di C x 5
3. 9 EES m E L Differential Input Voltage 0 0 dB Hz N lt DIGITUS i Receiver Electro optical Characteristics Vcc 3 1 V to 3 5 V Tc 0 Cto70 C 40 C to 85 C MAX UNITS NOTE dBm BER lt 10 dBm BER lt 10 nm PARAMETER SYMBOL Optical Input Power maximum Pr Sensitivity Pin O O O O lt NO Operating Center Wavelength Ac ptical Input Power maximum ptical Input Power minimum tivity ptical Return Loss ORL ptical isolation ata Output Rise Fall Time dB X 1260 1360nm dB X 1260 1360nm B B E D O U Signal Detect Asserted Signal Detect Deasserted Differential Output Voltage VDIFF D 20 80 di Receiver Loss of Signal Output Voltage Low dae Receiver Loss of Signal Output RX LOS Q Q lt lt a lt 3 5 01 2 4 i H NO Voltage High DIGITUS Block Diagram of Transceiver DATA LD Drive amp Hi DATA I gt Fault Sense LD TX_DISABLE N TX_FAULT lt i i PRE 0 AMPLIFIER lt IC WDM Filter 1 PD lt MOD_DEF 2 lt OPTICAL lt DATA SUB ASSEMBLIES POST Amp 4 DATA amp LOS Detect RX_LOS d Transmitter and Receiver Optical Sub assembly Section A 1550 nm InGaAsP laser and an InGaAs PIN
4. photodiode integrate with an WDM filter to form a bi directional single fiber optical subassembly OSA The laser of OSA is driven by a LD driver IC which converts differential input LVPECL logic signals into an analog laser driving current And The photodiode of OSA is connected to a circuit providing post amplification quantization and optical signal detection TX_DISABLE The TX_DISABLE signal is high TTL logic 1 to turn off the laser output Receive Loss RX_LOS The RX LOS is high logic 1 when there is no incoming light from the companion transceiver This signal is normally used by the system for the diagnostic purpose The signal is operated in TTL level DIGITUS Dimensions f D J J 2 3 S e CL SC I i O Bi il T 20 00 H T Kail S CH 3 G E 2 Of 3 LO N yY i d 45 00 S al eg 67 60 8 e 68 80 Mal O d DIMENSIONS ARE IN MILLIMETERS ALL DIMENSIONS ARE 0 2mm UNLESS OTHERWISE SPECIFIED D
5. IGITUS SFP host board mechanical layout X 4 34 50 10X91 05 0 01 10 00X3 60 85 0 05 oi OXY eg OXA el PCB E 3 68 L t 16 25 MIN PITCH 11 08 8 58 5 68 16 2 5REF 14 25 0 11 93 Lat 2 00X11 9X 0 935 0 05 eo OXA 26 80 d 41 30 42 30 5 00 3 20 0 90 20X0 5 0 03 Ze 2 e e e PINI po LP be o co i m o S cl Seng E 55 TE IS Oo De ich elele ale __ 2 00 0 005 TP 2x1 55 0 05 A SES 601 DIA OB DETAIL 1 Unit mm LEGEND 1 PADS AND VIAS ARE CHASSIS GROUND 2 THROUGH HOLES PLATING OPTIONAL 3 HATCHED AREA DENOTES COMPONENT AND TRACE KEEPOUT EXCEPT CHASSIS GROUND 4 AREA DENOTES COMPONENT KEEPOUT TRACES ALLOWED DIMENSIONS ARE IN MILLIMETERS DIGITUS Pin Assignment Pin Out PIN 11 DIN 20 I
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