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| Crystal Oscillator Model Name NH25M22WE 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 Item Measurement condition Model NH25M22WE 19.44 DC +3.3V 2.4 W max. at the start and 1.2 W max. when stable (+25C) HCMOS (VOL : 0.4V max., VOH : 2.4V min.) 10k//15pF 40 to 60% -10 to +70C 500x10-9 max. 10x10-9/day max. 500x10-9/year max. 100x10-9 max. 20x10-9 max. 2.0x10-6 min. 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% Frequency control characteristic 0 to +2.8 V, positive polarity n Reference Value Offset frequency 1 Hz 10 Hz 100 Hz 1k Hz 10k Hz dBc/Hz -65 max. -95 max. -120 max. -125 max. -130 max. Phase noise (@19.44MHz) The value of phase noise changes when the frequency changes. n Dimensions 8.90.1 8.90.1 PIN Connections #1 #2 #3 #4 #5 VCONT NC VCC OUTPUT GND n List of Options Power supply voltage Nominal frequency (MHz) DC +5V 10 to 38.88 25.4 For details of options, please feel free to contact our sales representatives. 2.5 #1 22 #2 #3 2.5 n List of Ordering Codes Frequency (MHz) 19.44 Ordering Code NH25M22WE-19.44M-NSA3417A (1.0) 10.5 #5 #4 Tolerance 0.2mm The above frequencies are NDK' s standard frequencies. Frequencies other than the above are available. Feel free to contact our sales representatives. co48_080418_NH25M22WE_e1 |
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