? eg2021 rev.0.6 35i eg-2021ca 2.5v lvcmos output oscillator ? features ? generates high frequency clock from a high stability saw (surface acoustic wave) resonator. ? 2.5v-cmos output. ? very low jitter/low phase noise. ? small smd in 7x5mm, max1.4mm height, ceramic package. ? applications ? ethernet, fibre channel, infiniband, pci-expr ess, rapidio, hypertransport, sonet etc. ? absolute maximum ratings item symbol unit min. typ. max. condition supply voltage v cc v -0.5 +4.0 v dd ? gnd storage temperature tstg c -40 +100 stored as bare product. solder heat resistance tsol max. 240 c x max. 10s x 2 times ? operating range item symbol unit min. typ. max. condition supply voltage v dd v 2.375 2.5 2.625 0 +70 p version operating temperature topr c -5 +85 r version output load cl pf 15 ? frequency characteristics (v dd =2.375 to 2.625,gnd=0.0v,load=max,) item symbol unit min. typ. max. condition output frequency range fosc mhz 62.5 170 +/-100 h stability, *1 frequency stability df/f0 ppm +/-50 g stability, *1 *1 this includes initial frequency tolerance, temperature, supply voltage variation and loading variation. ? electrical characteristics (v dd =2.375 to 2.625,gnd=0.0v,load=max) item symbol unit min. typ. max. condition start up time tosc ms 10 t=0 at v dd =2.375v ma 20 tbd cl=15pf current consumption i op ma 15 tbd no load output disable current i oe ma 0.6 oe=gnd rise time t tlh ns 1.0 tbd 20-80% of (voh-vol) fall time t thl ns 1.0 tbd 80-20% of (voh-vol) duty tw/t 45 55 at 50% v dd high level output voltage v oh v v dd -0.4 ioh=-8ma low level output voltage v ol v 0.4 iol=8ma high level input voltage v ih v 0.7v dd oe terminal low level input voltage v il v 0.3v dd oe terminal ui 0.027x10 -3 rms, @62.5 to 170mhz phase jitter *2 12khz to 20mhz offset t pj ps 0.21 rms, @125mhz t rj ps 3 4 of random jitter period jitter *3 n=50000 samples tp-p ps 25 40 peak to peak of jitter distribution accumulated jitter *3 n=2 to 50000 cycles tacc ps 4 5 of total jitter distribution *2 measured by ssb phase noise test equipment. *3 measured by time interval analyzer or oscilloscope. epson electronics america, inc. www.eea.epson.com preliminary
? eg2021 rev.0.6 35i ? test circuit ? timing chart ? external dimensions ( unit : mm ) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? recommended solder pattern 4-1.4 e eg-2021 125.000c o hpa21m a no. #1 #2 #3 #4 pin name oe gnd out v dd 7.0 0.2 5.08 1.2 0.2 5.0 0.2 4-(0.65) 2 - 2.60 4 - 1.10 #4 #3 #1 #2 #2 #1 #4 #3 #4 #1 #2 2.0 5.08 1.8 #3 4.2 unit: mm oe input by-pass capacitor power supply out i out oe 3 4 2 1 gnd v dd cl=max probe cap. included test point a oe out high or open enable low disable 50%v dd 80%v dd 20%v dd v dd v ol v oh gnd t tw t thl t tlh duty=tw/t x 100% epson electronics america, inc. www.eea.epson.com
? eg2021 rev.0.6 35i ? part numbering guide *4 eg-2021ca - (frequency)m - c h p a stability condition a: including 10yrs aging n: excluding aging temperature range p: 0 to +70c r: - 5 to +85c frequency stability h: +/-100ppm g: +/-50ppm output c: 2.5v lvcmos output frequency : see standard frequency list (4-digit accuracy) *4: cgra is not available. *5: cgxx and cxrx are not available below 100mhz. ? developed frequency list and available part no. combinations: frequency part no. suffix available 62.5000 chpa, chpn 64.0000 chpa, chpn 66.4063 chpa, chpn 66.5000 chpa, chpn 66.6667 chpa, chpn 71.5000 chpa, chpn 75.0000 chpa, chpn 77.7600 chpa, chpn 78.1250 chpa, chpn 80.0000 chpa, chpn 80.5664 chpa, chpn 83.0000 chpa, chpn 83.3143 chpa, chpn 87.5000 chpa, chpn 90.0000 chpa, chpn 98.3040 chpa, chpn 100.0000 chpa, chpn, chra, chrn, cgpn 106.2500 chpa, chpn, chra, chrn, cgpn 108.0000 chpa, chpn 125.0000 chpa, chpn, chra, chrn, cgpn 128.0000 chpa, chpn 132.8125 chpa, chpn 133.0000 chpa, chpn, chra, chrn, cgpn 133.3333 chpa, chpn 143.0000 chpa, chpn 150.0000 chpa, chpn 155.5200 chpa, chpn, chra, chrn, cgpn 156.2500 chpa, chpn, chra, chrn, cgpn 159.3750 chpa, chpn, chra, chrn, cgpn 160.0000 chpa, chpn 161.1328 chpa, chpn, chra, chrn, cgpn 164.3555 chpa, chpn 166.0000 chpa, chpn 166.6286 chpa, chpn, chra, chrn, cgpn 167.3316 chpa, chpn, chra, chrn, cgpn epson electronics america, inc. www.eea.epson.com
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