Crystal Oscillator Model Name NH25M22WC Oven-Controlled Crystal Oscillator (OCXO) for Fixed Communication Equipment n Main Application l Mobile communication base station l Exchanger l Measuring instrument l High-end router l Synthesizer 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 Model Item Measurement condition Standard nominal frequency (MHz) NH25M22WC 10 Power supply voltage DC +5V Power consumption 3 W max. at the start and 2 W max. when stable (+25°C) Output level HCMOS (VOL : 0.5V max., VOH : 4.5V min.) Load 15pF Duty Cycle (1/2Vcc) 40 to 60% Frequency stability Operating temperature range −10 to +70°C ±200×10−9 max. Frequency warm-up characteristic +25°C five minutes after power is on Aging Based on frequency after 30 days operation ±2×10−9/day max. Based on frequency after 30 days operation ±100×10−9/year max. Frequency / temperature characteristic −10 to +70°C ±20×10−9 max. Power supply variation characteristics DC +5V±5% ±10×10−9 max. Frequency control characteristic 0 to +5 V, positive polarity ±1.0×10−6 min. n Reference Value Offset frequency Phase noise (@10MHz) dBc/Hz 1 Hz −70 max. 10 Hz −100 max. 100 Hz −120 max. 1k Hz −135 max. 10k Hz −135 max. The value of phase noise changes when the frequency changes. n Dimensions n List of Options PIN Connections 17.8±0.1 #1 #2 #3 #4 #5 #6 #7 25.4±0.2 7.6±0.1 2.5 #2 #3 2.5 #1 VCONT NC VCC OUTPUT NC NC GND 7.8±0.2 22.0±0.2 #7 #6 #5 #4 Tolerance ±0.2mm Power supply voltage DC +3.3V Nominal frequency (MHz) 10 to 20 For details of options, please feel free to contact our sales representatives. n List of Ordering Codes Frequency (MHz) Ordering Code 10 NH25M22WC-10M-NSA3419A The above frequencies are NDK’ s standard frequencies. Frequencies other than the above are available. Feel free to contact our sales representatives. co46_080418_NH25M22WC_e1