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| Crystal Oscillator Model Name NH37M28LA n Main Application l Mobile communication base station l Measuring instrument l Synthesizer l Exchanger l High-end router Oven-Controlled Crystal Oscillator (OCXO) for Fixed Communication Equipment n Features l Compact. l Excellent rise characteristics. 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 five minutes after power is on Aging Based on frequency after 72 hours operation Based on frequency after 72 hours operation Frequency / temperature characteristic -10 to +70C Power supply variation characteristics DC +5V5% Frequency control characteristic 0 to +4 V, positive polarity Item Model NH37M28LA 10 DC +5V 3 W max. at the start and 1.3 W max. when stable (+25C) HCMOS (VOL : 0.5V max., VOH : 4.5V min.) 15pF 40 to 60% -10 to +70C 50x10-9 max. 2x10-9/day max. 50x10-9/year max. 10x10-9 max. 3x10-9 max. 1x10-6 min. n Reference Value Offset frequency 1 Hz 10 Hz 100 Hz 1k Hz 10k Hz dBc/Hz -85 max. -120 max. -140 max. -145 max. -150 max. Phase noise (@10MHz) The value of phase noise changes when the frequency changes. n Dimensions 36 33.1 PIN Connections #1 #2 #3 #4 #5 VCONT VREF VCC OUTPUT GND n List of Options Operating temperature range Power supply voltage Nominal frequency (MHz) -40 to +70C DC +3.3V 10 to 40 For details of options, please feel free to contact our sales representatives. 24.0 27.0 Terminal number is not printed #3 0.650.3 19max #2 STAND OFF (4 POINT) #4 17.80.3 15.240.3 n List of Ordering Codes Frequency (MHz) 10 Ordering Code NH37M28LA-10M-NSA3427A 4.5min 5-0.8 #1 #5 17.780.3 25.40.3 Tolerance 0.5mm The above frequencies are NDK' s standard frequencies. Frequencies other than the above are available. Feel free to contact our sales representatives. co39_080418_NH37M28LA_e1 |
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