crystal oscillator co56_101021_nh21m13lb_e oven-controlled crystal oscillator (ocxo) for fixed communication equipment model name nh21m13lb mobile communication base station exchanger measuring instrument synthesizer high-end router main application compact, with a low height. (compatible with 14-pin dip) excellent short-term stability (can be used instead of a tcxo because of its higher precision). excellent phase noise characteristics. (12.8mhz : -140dbc/hz at 1khz) excellent long-term frequency stability.(50010 -9 /year) features phase noise (at 12.8 mhz) offset frequency dbc/hz 1 hz max. ?60 10 hz max. ?90 100 hz max. ?120 1 khz max. ?140 10 khz max. ?145 the value of phase noise changes when the frequency changes. reference value tolerance 0.5 mm #14 #1 #7 #8 19max 21max 7.6ma x 13ma x 0.5max 6.35 0. 5 4 - 0.47 0.1 4.58 7.62 12.2 15.24 pin connections terminal number is not printed #1 #7 #8 #14 nc gnd output v cc mm dimensions operating temperature range (c) ?20 to +70 power supply voltage [v cc ] (v) +5 nominal frequency range (mhz) 10 to 20 for details of options, please feel free to contact our sales representatives. list of options frequency (mhz) ordering code 10 nh21m13lb-10m-nsa3422a 12.8 nh21m13lb-12.8m-nsa3422a the above frequencies are ndks standard frequencies. frequencies other than the above are available. feel free to contact our sales representatives. list of ordering codes specifcations model item measurement condition nh21m13lb nominal frequency (mhz) 10, 12.8 supply voltage [v cc ] (v) +3.3 5 % power consumption (w) at start max. 1.7 when stable (+25 c) max. 1 output voltage hcmos level (v ol max. 0.4 v, v oh min. 2.4 v) symmetry (%) at 1/2 v cc 40 to 60 load impedance (pf) 15 operating temperature range (c) ?10 to +70 storage temperature range (c) ?40 to +85 stabilization time stabilization time (frequency stability) within 500 10 ?9 after power on at +25c , based on frequency after 60minutes operation. 5 minutes long-term frequency stability based on frequency after 30 days operation max. 1010 ?9 /day based on frequency after 30 days operation max. 50010 ?9 /year frequency/temperature characteristics ?10 c to +70 c max. 10010 ?9 frequency/voltage coeffcient v cc +3.3 v 5 % max. 5010 ?9
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