75 south street, hopkinton, ma 01748 ? 800-982-5737 ? 508-435-6831 ? fax 508-435-5289 ? www.valpeyfisher.com ? revd0109 1 vfft401 quad output frequency translator description the vfft401 is a frequency translator which accept s an input frequency from 100 to 800mhz and provides an output frequency from 400 to 1.5ghz. up to four input and output combinations are possible. each i/o is preset and determined by the frequency select inputs [s 1:s0]. a lock detect output signal indicates an ?out of lock? condition. the device is implemented with a phase locked loop where all loop filter components are integrated into the module. the vfft401 is offer ed in a 19.5mm x17mm surface mount package. consult factory for frequency selections. r-divider pfd vco n- divide r filter f in fout /fout s1 s0 p1 p2 .1uf /en ld features ? 1.5 ghz output frequency range ? 4 selectable output frequencies ? low power: <220mw typical ? low profile smd package applications ? optical networking, sonet / sdh / atm ? 10 gigabit ethernet ? forward error correction (fec) rohs status block diagram
75 south street, hopkinton, ma 01748 ? 800-982-5737 ? 508-435-6831 ? fax 508-435-5289 ? www.valpeyfisher.com ? revd0109 2 vfft401 quad output frequency translator absolute maximum ratings parameter min max units power supply voltage -.50 +4.0 volts storage temperature -45 +90 o c operating specification parameter specification notes supply voltage 3.3 volts +/- 5% supply current 80ma (max) output frequencies (f0) ? f0(3) 400 to 1500 mhz see table 1 output frequency range 100mhz (max) f out min to f out max output configuration different ial lvpecl unterminated jitter rms 0.250ps (typ) 50 khz to 80 mhz input frequency fin( 0) ? fin (3) 100 to 800 mhz see table 1 input configuration single-ended, ac coupled input level 150 mvp-p(min) / 900mv (max) fin > 200 mhz input level 400 mvp-p (min) / 3 .3v (max) modulation bandwidth 1 k hz consult factory for options start up time 300 ms (max) i/o select inputs s1: s0 lvcmos see note 1 lock detect output (ld) logic ?1? : in lock logic ?0? : out of lock lvcmos lock / capture range 1% ( min) operating temperature range -40 oc to +85 oc example table 1 input frequency output frequency i / o ratio select inputs [s1 : s0] 669.32658 mhz 622.080 mhz 85 / 79 0 0 669.32658 mhz 669.32658 mhz 1 / 1 0 1 693.48315 mhz 644.5314 mhz 85 / 79 1 0 704.38 mhz 657.4213 mhz 90 / 84 1 1 notes 1. the input frequency must be within 500ppm of final value before asserting the ?select inputs.?
75 south street, hopkinton, ma 01748 ? 800-982-5737 ? 508-435-6831 ? fax 508-435-5289 ? www.valpeyfisher.com ? revd0109 3 vfft401 quad output frequency translator pin assignments pin # symbol description notes 1 fin input frequency 2 gnd ground 3 s1 i/o select (msb) 4 ld lock detect 5 s0 i/o select (lsb) 6 dnc do not connect to this pad 7 dnc do not connect to this pad 8 vcc 3.3 volt power supply 9 gnd ground 10 /oe output disable 11 /fout complimentary output 12 fout output 13 p1 connect to p2 externally add .1 uf capacitor 14 p2 connect to p1 externally mechanical outline 8 4 10 14 13 1 12 3 11 5 2 9 fin s1 s0 c1 .1 uf vcc = 3.3v gnd r1 180 ? fout nfout r2 180 ? ld disable c1 .1 uf vcc = 3.3v
75 south street, hopkinton, ma 01748 ? 800-982-5737 ? 508-435-6831 ? fax 508-435-5289 ? www.valpeyfisher.com ? revd0109 4 vfft401 quad output frequency translator ordering information: once input and output frequencies have been submitt ed and approved, the factory will assign a part number. vfft401 - sample frequencies table 2 p/n suffix s1:s0 input frequency (mhz) output frequency (mhz) p/n suffix s1:s0 input frequency (mhz) output frequency (mhz) -001 00 622.080 669.32658 -002 00 669.32658 622.080 01 669.32658 669.32658 01 669.32658 669.32658 10 644.5314 693.48315 10 693.48315 644.5314 11 657.4213 704.38 11 704.38 657.4213 -003 00 155.5200 669.32658 -004 00 167.331645 622.080 01 167.33164 669.32658 01 167.331645 669.32658 10 161.13285 693.48315 10 173.370787 644.5314 11 164.355325 704.38 11 176.09500 657.4213 suffix
|
