Crystal Oscillator Model Name NH21M13LB 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. (Compatible with 14-pin Dip) l Excellent rise characteristics. l Excellent phase noise characteristics. l Excellent aging characteristics. l Excellent short-term stability (can be used instead of a TCXO because of its higher precision). n Specifications Item Model Measurement condition NH21M13LB Standard nominal frequency (MHz) 10 , 12.8 Power supply voltage DC +3.3V Power consumption 1.7 W max. at the start and 1 W max. when stable (+25°C) Output level HCMOS (VOL : 0.4V max., VOH : 2.4V min.) Load 15pF Duty Cycle (1/2Vcc) 45 to 55% Frequency stability Operating temperature range −10 to +70°C ±500×10−9 max. Frequency warm-up characteristic +25°C five minutes after power is on Aging Based on frequency after 30 days operation ±10×10−9/day max. Based on frequency after 30 days operation ±500×10−9/year max. Frequency / temperature characteristic −10 to +70°C ±100×10−9 max. Power supply variation characteristics DC +3.3V±5% ±50×10−9 max. n Reference Value Offset frequency dBc/Hz 1 Hz Phase noise (@12.8MHz) −60 max. 10 Hz −90 max. 100 Hz −120 max. 1k Hz −140 max. 10k Hz −145 max. The value of phase noise changes when the frequency changes. n List of Options n Dimensions PIN Connections 13max #1 #7 #8 #14 NC GND OUTPUT VCC −20 to +70°C Power supply voltage DC +5.0V Nominal frequency (MHz) 10 to 20 For details of options, please feel free to contact our sales representatives. Terminal number is not printed #1 19max Operating temperature range #7 n List of Ordering Codes 7.6max 0.5max 4-φ0.47±0.1 6.35±0.5 #14 12.2 7.62 4.58 21max #8 15.24 Tolerance ±0.5mm Frequency (MHz) 10 12.8 Ordering Code NH21M13LB-10M-NSA3422A NH21M13LB-12.8M-NSA3422A The above frequencies are NDK’ s standard frequencies. Frequencies other than the above are available. Feel free to contact our sales representatives. co38_080418_NH21M13LB_e1