NH25M22TA NDK | Alldatasheet
Document overview
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Technical content
- 3 - 13A_1227_NH20M20LB&NH25M22TA_j High Precision Oscillator (Twin-OCXO) for Fixed Communication EquipmentNH20M20LB / NH25M22TA
- Base stations for system mobile communications
- Optical transmission system ●Measuring instrument
- Synthesizer ● Exchanger ● High-end router ■ Main Application
- Compact and excellent temperature characteristics.
- Excellent long-term frequency stability.
- Excellent phase noise characteristics.
- Hermetic sealing package for excellent environmental-proof performance.
- Supports wide temperature range (-40 to +85 °C) ■ Features ■ Dimensions Model Item Measurement condition NH20M20LB / NH25M22TA Nominal frequency range (MHz) 5 to 40 Supply voltage [VCC] (V) +3.3 ± 5 % Power consumption (W) at start Max. 4.0 when stable (+25 °C) Max. 1.2 Output voltage LVCMOS (VOL Max. 0.3 V, VOH Min. 3 V) Symmetry (%) at 1/2 VCC 45 to 55 Load impedance (pF) 15 Operating temperature range (°C) –40 to +85 Storage temperature range (°C) –40 to +85 Stabilization time Stabilization Time (Frequency Stability) within ±100 ×10−9 after power on at +25°C , based on frequency after 60minutes operation. Max. 5 minutes Long-term frequency stability Based on frequency after 30 days operation Max. ±80×10–9/year Frequency/Temperature characteristics Max. ±3×10–9 Frequency/Voltage coefficient VCC +3.3 V ±5 % Typ. ±5×10–9 (Max. ±10×10–9 ) Frequency control range Vcont +0 V to +2.8 V (@ +1.4V) Min. ±1.0×10–6 Frequency change polarity Frequency change polarity Positive Linearity Typ. 1% ■ Specifications Model : NH20M20LB Model : NH25M22TA ■ Reference Value mm Land pattern (Typical) 17.8±0.1 #4#5#6#7 #3#2#1 7.62±0.1 8.9 ±0.1 7.62 17.8 Fill the resi n 2.5 25.412.1±0.3 22.9 3.5 2.5 9-Ø0 .45± 0. 10 Max.21.5 Max.21.5 15.24 7.62 -0.0 +0.20.3 #2 #3 Max.11 ST AN D OF F (G LA SS ) 4POI NT NH25M22T ANH20M20LB 3.048 5×3.048(=15.24) 7.62 Terminal land connections *Please don’t connect #4 OUTPUT V cont V CC NC* NC* GN D NC* Pin connections V cont NC* V CC GN D OUTPUT #9 NC* NC* NC* NC* (Pin numbers are not marked on products) * Please don’t connec t Phase noise (at 10 MHz) Offset frequency dBc/Hz (Typ.)
1 Hz –80
10 Hz –105
100 Hz –130
1 kHz –150 10 kHz –160 The value of phase noise changes when the frequency changes. ■ List of Codes for Placing an Order Model NH20M20LB Nominal frequency (MHz) Model NH25M22TA Nominal frequency (MHz) Please specify a NDK's nominal frequency in the square brackets. (Example 10MHz : Please specify 10M in the square brackets.) Frequencies other than the above are available. Feel free to contact our sales representatives.