www.iterrac.com IT6144 duobinary encoder and driver amplifier this is a production data sheet. see product statu s definitions on web site or in catalog for product development status. november 14, 2006 doc. 4132 rev 3.2 1 iterra communications 2400 geng road, ste. 100, palo alto, ca 94303 phone (650) 424-1937, fax (650) 424-1938 description features device diagram compact duobinary conversion and transmitter drive functions supports external bessel filter and pre-filtered mo dulator applications adjustable ac coupled output voltage from 6.0 to 10 .5 vpp power dissipation: 3.3 w with +8 v and -5 v supply voltages single-ended, ac-coupled data and clock inputs rohs-6-compliant, 7x8 mm 2 (0.278 x 0.315 mil 2 ) smt ceramic package with bottom pad grounding and h eat sinking absolute maximum ratings v +2 -3 output voltage adjustment vadj v 0 -2 first gate negative supply voltage vg1 v -6 -5 vdc supply input vee o c 125 storage temperature tst o c 85 base operating temperature tbase v 0 -2 second gate negative supply voltage vg2 v 10 +8 vdc supply input vdd unit maximum minimum parameter symbol the IT6144 is a rohs-6-compliant integrated duobina ry encoder and driver in a compact, surface-mount package for optical 300-pin module an d linecard transponders used in long-haul applications. the device converts an elec trical 10 gb/s nrz signal into an equivalent duobinary signal, then amplifies it to d rive a filtered linbo 3 modulator. the IT6144s duobinary output level is adjustable from 6 to 10.5 vpp, which is sufficient to reach 2*vpi of most linbo 3 modulators and provide margin for loop control to t rack variations caused by temperature and aging . single-ended clock and data inputs eliminate the need for phase-matched traces, simpli fying the board layout. the clock input and duobinary output are ac-coupled in the pa ckage. the data input should be ac- coupled outside the package. the device is housed i n a rugged, rohs-6-compliant, ceramic package. -5v supply 13db 13db vadj
www.iterrac.com IT6144 duobinary encoder and driver amplifier this is a production data sheet. see product statu s definitions on web site or in catalog for product development status. november 14, 2006 doc. 4132 rev 3.2 2 iterra communications 2400 geng road, ste. 100, palo alto, ca 94303 phone (650) 424-1937, fax (650) 424-1938 recommended operating conditions o c 75 0 tbase ma ? 0 ig2 v -0.75 -0.55 -0.35 second gate negative supply voltage vg2 ma ? 0 first gate negative supply current ig1 v -0.8 -1 -1.3 first gate negative supply voltage vg1 ma ? 0 current of output voltage adjustment iadj v 0 -1.5 output voltage adjustment vadj ma 125 115 105 negative supply current iee v -5.25 -5 -4.75 negative supply voltage vee ma 370 330 260 positive supply current idd v 8.4 8 7.6 positive supply voltage vdd units max typ min parameter symbol 1. the IT6144 is a heat- down device. this means that the primary heat conduction path for the package is through the base of the package. proper pcb thermal design is required. the design will depend upon the particular application: considering orientation, airflow, and other physical and mechanical constraints. ps rms 2 1.6 j jitter vpp 6.0 level adjust control set to min. vout_min minimum output voltage amplitude (ac coupled) vpp 10.5 level adjust control set to maximum vout_max maximum output voltage amplitude (ac coupled) deg. 290 ph_d-c data-clock phase margin mvpp 1000 350 vin_pp clock and data input amplitude (ac coupled) ghz 11.5 9.9 clk_f input clock frequency gb/s 11.5 9.9 din_dr input data rate unit max. typ. min. conditions symbol parameter electrical characteristics at ambient temperature
www.iterrac.com IT6144 duobinary encoder and driver amplifier this is a production data sheet. see product statu s definitions on web site or in catalog for product development status. november 14, 2006 doc. 4132 rev 3.2 3 iterra communications 2400 geng road, ste. 100, palo alto, ca 94303 phone (650) 424-1937, fax (650) 424-1938 g package dimensions pad assignments ground base vdd (choke) 10 vdd 9 nc 8 dbout 7 vg2 6 vee 5 clock in 4 data in 3 vadj 2 vg1 1 function pad # (in inches) data-in should be ac coupled externally note: clock-in is internally ac coupled rzout is internally ac coupled iterra IT6144 s/n- xxx d/c 2506
|
