Crystal Oscillator NH25M22WG Oven Controlled Crystal Oscillator (OCXO) for Fixed Communication Equipment ■ Main Application ● Base stations for system mobile communications ● Optical transmission system ● Measuring instrument ● Synthesizer ■ Features ● Exchanger ● High-end router ● Low height and low power-driven type. ● Low power consumption. (Max. 1W at +25°C) ● Very quick stabilization time. ● Excellent long-term frequency stability. (Max. ±30×10-9 / year) ● Excellent phase noise characteristics at frequency offsets. (-100dBc / Hz at 1Hz offset) ■ Specifications Model Item Measurement condition Nominal frequency (MHz) NH25M22WG 10 Supply voltage [VCC] (V) +3.3 ±5 % at start Power consumption (W) Max. 3 when stable (+25 °C) Max. 1.0 LVCMOS level (VOL Max. 0.3 V, VOH Min. 2.4 V) Output voltage at+(VOH + VOL) / 2 Symmetry (%) 40 to 60 Load impedance (pF) 15 Operating temperature range (°C) 0 to +70 Storage temperature range (°C) −40 to +85 Stabilization Time (Frequency Stability) within ±200 ×10−9 after power on at +25°C , based on frequency after 60minutes operation. Stabilization Time (Frequency Stability) within ±50 ×10−9 after power on at +25°C , based on frequency after 60minutes operation. Stabilization time Max. 90 seconds Max. 3 minutes Max. ±1×10−9/day Long-term frequency stability Based on frequency after 30 days operation Frequency/Temperature characteristics 0 to +70 °C Frequency/Voltage coefficient VCC +3.3 V ± 5 % Max. ±3×10−9 Frequency control range Vcont +1.4 ± 1.4 V Min. ±500×10−9 Max. ±30×10−9/year Max. ±10×10−9 Frequency change polarity Positive ■ Reference Value ■ Dimensions mm 17.8±0.1 7.62±0.10 25.4±0.3 Terminal land connections Vcont #2 DNC (Do not connect) #3 VCC #4 OUTPUT #5 DNC #6 DNC #7 GND Phase noise (at 10 MHz) Short-term frequency stability (at 10MHz) Nominal frequency (MHz) 10 2.5±0.3 #2 #3 #7 #6 Typ. −100 10 Hz Typ. −125 100 Hz Typ. −142 1 kHz Typ. −152 10 kHz Typ. −152 τ=1 Typ. 3.8×10−12 Ordering Code NH25M22WG-10M-NSA3626A We offer a test instrument(charge) for measuring accurately. The above frequency are NDK’s standard frequency. Frequencies other than the above are available. Feel free to contact our sales representatives. 2.5±0.3 #1 dBc/Hz 1 Hz ■ List of Ordering Codes 12.1±0.3 22±0.3 #1 Offset frequency #5 #4 -6- 1501B_NH25M25WG_e