Crystal Oscillator NH25M25TE Oven Controlled Crystal Oscillator (OCXO) for Fixed Communication Equipment ■ Main Application ● Base stations for system mobile communications ● Optical transmission system ● Measuring instrument ■ Features ● Synthesizer ● Exchanger ● High-end router ● Supports wide temperature range. (-40 to +85°C) ● Excellent long-term frequency stability. (10MHz : Max. ±30×10−9/year) 20MHz : Max. ±80×10−9/year) ● Low near-carrier phase noise characteristics. (-100dBc / Hz at 1Hz offset) ● Hermetic sealing package for excellent environmental-proof performance. ■ Specifications Model Item Measurement condition Nominal Frequency (MHz) Supply Voltage [VCC] (V) NH25M25TE 10 20 +5 ±5 % +3.3 ±5 % at start Power Consumption (W) Max. 3 when stable (+25 °C) Max. 1.3 HCMOS level VOL Max. 0.5 V, VOH Min. 3.5 VVOL Max. 0.3 V, VOH Min. 2.4 V 40 to 60 Output Voltage Symmetry (%) at+(VOH + VOL) / 2 Load Impedance (pF) 15 Operating Temperature Range (°C) −40 to +85 Storage Temperature Range (°C) −40 to +85 Stabilization Time (Frequency Stability) within ±500 ×10−9 after power on at +25°C , based on frequency after 60minutes operation. Stabilization Time (Frequency Stability) within ±100 ×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 −40 to +85 °C Max. ±10×10−9 Frequency/Voltage Coefficient (*1) Max. ±3×10−9 Specification Number 20MHz : VCC +3.3 V ±5 % ■ Dimensions 25.4 Terminal land connections OUTPUT DNC (Don't connect) GND DNC (Don't connect) DNC (Don't connect) Vref NC DNC (Don't connect) VCC 12.1 12.8 19 25.4 #1 #2 #4 #6 #7 #13 #15 #17 #19 #19 #17 #15 #13 Phase Noise (at 10 MHz) Phase Noise (at 20 MHz) Short-term Frequency Stability #6 #7 Offset Frequency dBc/Hz 1 Hz Typ. −100 10 Hz Typ. −127 100 Hz Typ. −143 1 kHz Typ. −148 10 kHz Typ. −150 Offset Frequency dBc/Hz 1 Hz Typ. −85 10 Hz Typ. −115 100 Hz Typ. −140 1 kHz Typ. −145 10 kHz Typ. −145 τ=1 Typ. 8×10−12 We offer a test instrument(charge) for measuring accurately. 2.4 1.9 NSC5063B ■ Reference Value mm 19 6.4 #4 Max. ±80×10−9/year NSC5063A (*1) 10MHz : VCC +5 V ±5 % #1 #2 Max. ±30×10−9/year Please specify the model name, frequency, and specification number when you order products. For further questions regarding specifications, please feel free to contact us. Tolerance ±0.5 mm -9- 1604A_NH25M25TE_e