time &frequency 4-32 vol. 2 sales offices: visit our web site at http://www.temex-components.com qev 51-kh qev 51-ko ahcmos output sine output frequency range 14 - 120 mhz 14 - 150 mhz 150 - 200 mhz temperature range lq to dt lq to dt control voltage @2.5v,z>10 k ? ) 0 v to 5 v 0 v to 5 v pulling range (positive slope) 100 ppm 100 ppm 75 ppm voltage controlled crystal oscillator - vcxo qev 51-ko & qev 51-kh frequency range 14 mhz to 200 mhz applications telecommunication system sonet / sdh / atm multiplexing digital switching phase locking features temperature ranges: up to -40 c to +85 c frequency stability: 15 to 50 ppm calibration (@25 c 2 c): 10 ppm supply voltage: +5 v 5 % current consumption: 35 to 50 ma load (kh version): 15pf/10nttl-gates load (ko version): 0 dbm / 50 ? sub-harmonics (ko version): > -25 dbc spurious (ko version): > -80 dbc rise / fall time (kh version): 5 ns ageing: 3 ppm / 1st year pulling range: >50 ppm to 100 ppm min. @ 2.5 vdc 2 vdc, slope positive duty cycle: 50/50 20 % stability vs. power supply and load: 5 ppm description our qev51-ko is a sinewave voltage controlled crystal oscillator in a package 20 x 20 x 10 mm which is designed for industrial temperature range of -40 c to +85 c with a sinusoidal output. it allows an upper frequency of 200 mhz by using an overtone quartz resonator in a sealed package and a pulling range up to 100 ppm. this type of product is well suited for very low phase noise applications (typically -120 dbc/hz @ 100 hz and typically -155 dbc/hz @ 10 khz for f= 150 mhz). using acmos technology, the qev51-kh offers the same performance up to 120 mhz. consumer & industrial through hole vcxo minimum ordering information requirement (see t able 1 for available combinations) (see page 4-37 for package drawing) example: qev 51 - ko 155.52 mhz 100lq15 output signal ko = sinus kh = ahcmos pulling range 50 ppm 75 ppm 100 ppm (2) temperature lq = 0 c ~ +70 c hq = -20 c ~ +70 c dt = -40 c ~ +85 c * stability 15 = 15 ppm * 25 = 25 ppm 50 = 50 ppm note: 1. options with the same marker may not be combined with each other. 2. not available for high frequency, see table 1. table 1: other temperature ranges and stability available
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