euroquartz limited blacknell lane crewkerne somerset uk ta18 7he tel: +44 (0)1460 230000 fax: +44 (0)1460 230001 info@euroquartz.co.uk www.euroquartz.co.uk euro quartz 8 pin dual-in-line gf8 vcxo part numbering example: 3gf8b-80n-156.25 supply voltage 3 = +3.3v series designator gf8 stability over temperature range (see table) pullability in ppm pullability determinator n = minimum m = maximum t = typical frequency in mhz description frequency range 50.01mhz to 200mhz (15pf load) frequency range 50.01mhz to 320mhz (10pf load) lvcmos output supply voltage 3.3 vdc ultra low jitter less than 1ps frequency range load 15pf: 50.01mhz to 200.0mhz load 10pf: 50.01mhz to 320.0mhz supply voltage: 3.3 vdc 5% output logic: lvcmos integrated phase jitter: 0.4ps typical, 0.5ps maximum (for 155.250mhz) period jitter rms: 3.0ps typical (for 155.250mhz) period jitter peak to peak: 20ps typical (for 155.250mhz) phase noise: see table below initial frequency accuracy: tune to the nominal frequency with vc= 1.65 0.2vdc output voltage high (1): 90% vdd minimum output voltage low (0): 10% vdd maximum pulling range: from 30ppm to 150ppm temperature stability: see table output load: 15pf start-up time: 10ms maximum, 5ms typical duty cycle: 50% 5% measured at 50% vdd rise/fall times: 0.7ns typical (15pf load) current consumption <100mhz: 30ma maximum (15pf load) >100mhz: 40ma maximum (15pf load) linearity: 10% maximum, 6% typical modulation bandwidth: 25khz minimum input impedance: 60k w minimum slope polarity: monotonic and positive. ( an (transfer function) increase of control voltage always increases output frequency.) storage temperature: -50 to +100c ageing: 5ppm per year maximum enable/disable (tristate): not available ( 4 pad package ) rohs status: fully compliant specification gf8 vcxos, are packaged in an industry-standard, 8 pin dual in line package. gf8 vcxos provide excellent phase jitter performance, less than 1ps. 10hz -62dbc/hz 100hz -92dbc/hz 1khz -120dbc/hz 10khz -132dbc/hz 100khz -128dbc/hz 1mhz -140dbc/hz 10mhz -150dbc/hz 50.0mhz to 320.0mhz phase noise offset frequency 155.25mhz frequency stability a 25 0~+70c b 50 0~+70c c 100 0~+70c d 25 -40~+85c e 50 -40~+85c f 100 -40~+85c if non-standard frequency stability is required use ?i? followed by stability, i.e. i20 for 20ppm stability code stability ppm temp. range
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