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| Crystal Oscillator Model Name NH25M22WD www..com Oven-Controlled Crystal Oscillator (OCXO) for Fixed Communication Equipment n Main Application l Mobile communication base station l Measuring instrument l Synthesizer l Exchanger l High-end router n Features l Compact, with a low height. l A surface-mount (SMD) package. l Reflow soldering is possible. l Excellent phase noise characteristics. l Excellent aging characteristics. n Specifications Measurement condition Standard nominal frequency (MHz) Power supply voltage Power consumption Output level Load Duty Cycle (1/2Vcc) Operating temperature range Frequency stability Frequency warm-up characteristic +25C three minutes after power is on Aging Based on frequency after 30 days operation Based on frequency after 30 days operation Frequency / temperature characteristic -10 to +70C Power supply variation characteristics DC +3.3V5% Item Model NH25M22WD 12.8 DC +3.3V 2.7 W max. at the start and 1 W max. when stable (+25C) HCMOS (VOL : 0.4V max., VOH : 2.9V min.) 10k//15pF 40 to 60% -10 to +70C 500x10-9 max. 10x10-9/day max. 500x10-9/year max. 300x10-9 max. 50x10-9 max. n Reference Value Offset frequency 1 Hz 10 Hz 100 Hz 1k Hz 10k Hz dBc/Hz -60 max. -90 max. -120 max. -130 max. -140 max. Phase noise (@12.8MHz) The value of phase noise changes when the frequency changes. n Dimensions 7.620.1 PIN Connections #1 #2 #3 #4 #5 #6 #7 NC NC VCC OUTPUT NC NC GND n List of Options Power supply voltage Nominal frequency (MHz) DC +5V 10 to 38.88 25.40.2 For details of options, please feel free to contact our sales representatives. 2.5 8.9 17.80.1 220.2 #1 #2 #3 2.5 n List of Ordering Codes Frequency (MHz) 12.8 Ordering Code NH25M22WD-12.8M-NSA3418A 10max The above frequencies are NDK' s standard frequencies. Frequencies other than the above are available. Feel free to contact our sales representatives. #7 #6 #5 #4 Tolerance 0.2mm co47_080418_NH25M22WD_e1 |
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