product datasheet 1.25gb/s cwdm single-mode sfp transceiver part number dfto date revision sheet no sfpt-cwxx-01 ella 15 sep., 2014 p1 1 of 10 http://www.pulseelectronics.com/ part number: SFPT-CW31-01, sfpt-cw49-01, sfpt-cw55- 01, product features up to 1.25gb/s data links dfb laser transmitter and pin photo-detector up to 80km on 9/125m smf hot-pluggable sfp footprint duplex lc/upc type pluggable optical interface low power dissipation metal enclosure, for lower emi rohs compliant and lead-free single +3.3v power supply support digital diagnostic monitoring interface compliant with sff-8472 case operating temperature: 0c to +70
product datasheet 1.25gb/s cwdm single-mode sfp transceiver part number dfto date revision sheet no sfpt-cwxx-01 ella 15 sep., 2014 p1 2 of 10 http://www.pulseelectronics.com/ applications switch to switch interface gigabit ethernet switched backplane applications router/server interface other optical links product description sfpt-cwxx-01 small form factor pluggable (sfp) transceivers are compatible with the small form fa ctor pluggable multi-sourcing agreement (msa). the trans ceiver consists of five sections: the ld driver, th e limiting amplifier, the digital diagnostic monitor, the dfb laser and the pin photo-detector .the module data l ink up to 80km in 9/125um single mode fiber. the optical output can be disabled by a ttl logic h igh-level input of tx disable, and the system also can disable the module via i2c. tx fault is provided to indicat e that degradation of the laser. loss of signal (lo s) output is provided to indicate the loss of an input optical s ignal of receiver or the link status with partner. the system can also get the los (or link)/disable/fault informatio n via i2c register access.
product datasheet 1.25gb/s cwdm single-mode sfp transceiver part number dfto date revision sheet no sfpt-cwxx-01 ella 15 sep., 2014 p1 3 of 10 http://www.pulseelectronics.com/ product selection sfpt-cwxx-01 wavelength xx clasp color code 1310 nm 31 gray 1490 nm 49 purple 1550 nm 55 yellow i. pin descriptions pin symbol name/description note 1 v eet transmitter ground (common with receiver ground) 1 2 t fault transmitter fault. 3 t dis transmitter disable. laser output disabled on high or open. 2 4 mod_def(2) module definition 2. data line for ser ial id. 3 5 mod_def(1) module definition 1. clock line for se rial id. 3 6 mod_def(0) module definition 0. grounded within t he module. 3 7 rate select no connection required 4 8 los loss of signal indication. logic 0 indicates normal operation. 5 9 v eer receiver ground (common with transmitter ground) 1 10 v eer receiver ground (common with transmitter ground) 1 11 v eer receiver ground (common with transmitter ground) 1 12 rd- receiver inverted data out. ac coupled 13 rd+ receiver non-inverted data out. ac coupled
product datasheet 1.25gb/s cwdm single-mode sfp transceiver part number dfto date revision sheet no sfpt-cwxx-01 ella 15 sep., 2014 p1 4 of 10 http://www.pulseelectronics.com/ 14 v eer receiver ground (common with transmitter ground) 1 15 v ccr receiver power supply 16 v cct transmitter power supply 17 v eet transmitter ground (common with receiver ground) 1 18 td+ transmitter non-inverted data in. ac coupled . 19 td- transmitter inverted data in. ac coupled. 20 v eet transmitter ground (common with receiver ground) 1 notes: 1. circuit ground is internally isolated from chassis ground. 2. laser output disabled on t dis >2.0v or open, enabled on t dis <0.8v. 3. should be pulled up with 4.7k - 10kohms on host boa rd to a voltage between 2.0v and 3.6v.mod_def (0) pulls line low to indicate module is plugged in. 4. this is an optional input used to control the recei ver bandwidth for compatibility with multiple data rates (most likely fiber channel 1x and 2x rates).if impl emented, the input will be internally pulled down w ith > 30k ? resistor. the input states are: low (0 ? 0.8v): reduced bandwidth (>0.8, < 2.0v): undefined high (2.0 ? 3.465v): full bandwidth open: reduced bandwidth 5. los is open collector output should be pulled up wi th 4.7k - 10kohms on host board to a voltage betwee n 2.0v and 3.6v. logic 0 indicates normal operation; logic 1 indicates loss of signal.
product datasheet 1.25gb/s cwdm single-mode sfp transceiver part number dfto date revision sheet no sfpt-cwxx-01 ella 15 sep., 2014 p1 5 of 10 http://www.pulseelectronics.com/ figure2. pin out of connector block on host board ii. absolute maximum ratings iii. recommended operating conditions parameter symbol min. typ. max. unit note storage temperature ts -40 85 oc storage ambient humidity h a 5 95 % power supply voltage v cc -0.5 4 v signal input voltage -0.3 vcc+0.3 v receiver damage threshold 5 dbm parameter symbol min. typ. max. unit note case operating temperature t case 0 70 oc ambient humidity h a 5 70 % non-condensing power supply voltage v cc 3.13 3.3 3.47 v power supply current i cc 300 ma power supply noise rejection 100 mvp-p 100hz to 1mhz
product datasheet 1.25gb/s cwdm single-mode sfp transceiver part number dfto date revision sheet no sfpt-cwxx-01 ella 15 sep., 2014 p1 6 of 10 http://www.pulseelectronics.com/ iv. specification of transmitter note (1): measure at 2^7-1 nrz prbs pattern note (2): ?xx? is: 31, 49 and 55; ? ? ? is 7.5 note (3): transmitter eye mask definition v. specification of receiver data rate 1250/1250 mbps tx rate/rx rate transmission distance 80 km coupled fiber single mode fiber 9/125um smf parameter symbol min. typ. max. unit note average output power p out 0 5 dbm note (1) extinction ratio er 9 db center wavelength c (1xx0)- ? 1xx0 (1xx0)+ ? nm dfb laser note (2) side mode suppression ratio smsr 30 db spectrum bandwidth(-20db) 1 nm transmitter off output power p off -45 dbm differential line input impedance rin 90 100 110 oh m output eye mask compliant with ieee802.3 z (class 1 laser safety) note (3)
product datasheet 1.25gb/s cwdm single-mode sfp transceiver part number dfto date revision sheet no sfpt-cwxx-01 ella 15 sep., 2014 p1 7 of 10 http://www.pulseelectronics.com/ note (1): measured with light source 1xx0 nm, er=9d b; ber =<10^-12 @prbs=2^7-1 nrz , ?xx? is: 31,49 and 55. note (2): when los de-asserted, the rx data+/- outp ut is high-level (fixed) vi. electrical interface characteristics note (1): a (tx) + b (rx) = 300ma (not include t ermination circuit) vii. digital diagnostic functions sfpt-cwxx-01 transceivers support the 2-wire serial co mmunication protocol as defined in the sfp msa. it is ver y closely related to the e2prom defined in the gbic standard , with the same electrical specifications. parameter symbol min. typ. max. unit note input optical wavelength in 1270 1610 nm pin-tia receiver sensitivity p in -26 dbm note (1) input saturation power (overload) p sat -3 dbm los of signal assert p a -27 dbm los of signal de-assert p d -38 dbm note (2) los hysteresis p a -p d 0.5 2 6 db parameter symbol min. typ. max. unit note transmitter total supply current i cc a ma note (1) transmitter disable input-high v dish 2 vcc+0.3 v transmitter disable input-low v disl 0 0.8 v transmitter fault input-high v disl 2 vcc+0.3 v transmitter fault input-low v txfh 0 0.8 v receiver total supply current i cc b ma note (1) loss output voltage-high v losh 2 vcc+0.3 v lvttl loss output voltage-low v losl 0 0.8 v
product datasheet 1.25gb/s cwdm single-mode sfp transceiver part number dfto date revision sheet no sfpt-cwxx-01 ella 15 sep., 2014 p1 8 of 10 http://www.pulseelectronics.com/ the standard sfp serial id provides access to identific ation information that describes the transceiver?s cap abilities, standard interfaces, manufacturer, and other information. additionally, sfp transceivers provide a unique enhanced digital diagnostic monitoring interface, which allows real-time access to device operating parameters such a s transceiver temperature, laser bias current, transmitte d optical power, received optical power and transceiver supply volt age .it also defines a sophisticated system of alarm an d warning flags, which alerts end-users when particular op erating parameters are outside of a factory set normal r ange. the sfp msa defines a 256-byte memory map in e2prom th at is accessible over a 2-wire serial interface at th e 8 bit address 1010000x (a0h). the digital diagnostic monitori ng interface makes use of the 8 bit address 1010001x (a2h), so the originally defined serial id memory map remains unchanged. the interface is identical to, and is thus fu lly backward compatible with both the gbic specification and the sfp multi source agreement. the operating and diagnostics information is monitored a nd reported by a digital diagnostics transceiver controlle r (ddtc) inside the transceiver, which is accessed throug h a 2-wire serial interface. when the serial protocol is activated, the serial clock signal (scl, mod def 1) is generated b y the host. the positive edge clocks data into the sfp transceiver into those segments of the e2prom that are not write-protected. the negative edge clocks data f rom the sfp transceiver. the serial data signal (sda, mod def 2) is bi-directional for serial data transfer. the host u ses sda in conjunction with scl to mark the start and end of ser ial protocol activation. the memories are organized as a series of 8-bit data words that can be addressed individually or sequentially. digital diagnostics for the sfpt-cwxx-01 are internally ca librated by default.
product datasheet 1.25gb/s cwdm single-mode sfp transceiver part number dfto date revision sheet no sfpt-cwxx-01 ella 15 sep., 2014 p1 9 of 10 http://www.pulseelectronics.com/ viii. recommend circuit schematic vccr 3.3v veet amplifier eeprom 0.1uf veer 0.1uf rx_los 1uh serdes ic 1uh 100 ohm res1 vcc td+ td - res1 protocol vcc rx_los 0.1uf 0.1uf tx_disable tx_fault 0.1uf 10uf 10uf * depands onserdes ic used res1=4.7k to10k ohms 100 ohm rd+ rd- tx_fault mod_def 2 pld/pal photo diode laser diode tx_disable mod_def 0 3.3v 10k res1 res1 vcct res1 0.1uf mod_def 1 10uf sfp module protocol ic 0.1uf laser driver
product datasheet 1.25gb/s cwdm single-mode sfp transceiver part number dfto date revision sheet no sfpt-cwxx-01 ella 15 sep., 2014 p1 10 of 10 http://www.pulseelectronics.com/ ix. mechanical specifications (unit: mm) 0.1 0.1 sfpt-cwxx-01 x. regulatory compliance feature reference performance electrostatic discharge esd iec/en 61000-4-2 compatible with standards electromagnetic interference (emi) fcc part 15 class b en 55022 class b (cispr 22a) compatible with standards laser eye safety fda 21cfr 1040.10, 1040.11 iec/en 60825-1 2 class 1 laser product component recognition iec/en 60950 ul compatible with standards rohs 2002/95/ec compatible with standards emc en61000-3 compatible with standards
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