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 gv576 vcxo description outline & dimensions part number schedule 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 gv576 vcxos are packaged in the industry-standard, 6 pad, 7mm x 5mm smd package. the vcxos incorporate a high q fundamental mode crystal and a low jitter multiplier circuit. 10hz -65dbc/hz 100hz -95dbc/hz 1khz -120dbc/hz 10khz -128dbc/hz 100khz -122dbc/hz 1mhz -120dbc/hz 10mhz -140dbc/hz phase noise high q fundamental mode crystal low jitter multiplier circuit frequency range 50.01mhz to 200mhz lvcmos output supply voltage 3.3 vdc frequency range: 50.01mhz to 200.0mhz supply voltage: 3.3 vdc 5% output logic: lvcmos integrated phase jitter: 2.3ps typical, 4.0ps maximum (for 155.520mhz) period jitter rms: 4.0ps typical (for 155.520mhz) period jitter peak to peak: 27.0ps typical (for 155.520mhz) 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: 1.2ns typical (15pf load) current consumption: 40ma maximum (15pf load) linearity: 6% typical, 10% maximum modulation bandwidth: 25khz minimum input impedance: 2 m w minimum slope polarity: monotonic and positive. ( an (transfer function) increase of control voltage always increases output frequency.) storage temperature: -50 to +100c ageing: 3ppm 1st year maximum, 2ppm/year thereafter enable/disable (tristate): pads 2 or 5, enable high or 70% vdd min applied to tri-state pad to enable output. 30% vdd max. to disable output (high impedance) rohs status: rohs compliant specification cmos smd 7 x 5 x 1.8mm, 6 pad 50.01mhz ~ 200.0mhz stability code stability ppm temp. range offset frequency 155.52mhz example: 3gv576b-80n-76.000 supply voltage 3 = +3.3v series designator gv576 stability over temperature range (s ee table ) pullability in ppm pullability determinator n = minimum m = maximum t = typical frequency in mhz
|
