Crystal Oscillator Model Name NH21M13LA Oven-Controlled Crystal Oscillator (OCXO) for Fixed Communication Equipment ■ Main Application ● Base stations for Mobile communication system ● Measuring instrument ● Synthesizer ● Exchanger ● High-end router ■ Features ● Compact, with a low height. (Compatible with 14-pin Dip) ● Excellent short-term stability (can be used instead of a TCXO because of its higher precision). ● Excellent phase noise characteristics.(10MHz : -140dBc/Hz at 1kHz) e 13 lif 0 2 of pd e S En ● Excellent long-term frequency stability.(±500×10-9/year) ■ Specifications Model Item Measurement condition Nominal frequency (MHz) NH21M13LA 10, 13 Supply voltage [VCC] (V) +12 ±5 % at start Power consumption (W) Max. 2 when stable (+25 °C) Max. 1.1 HCMOS level (VOL Max. 0.5 V, VOH Min. 4.5 V) Output voltage Symmetry (%) at +2.5 V 40 to 60 Load impedance (pF) 15 Operating temperature range (°C) 0 to +70 Storage temperature range (°C) -40 to +85 Stabilization time Long-term frequency stability Stabilization Time (Frequency Stability) within ±500 ×10−9 after power on at +25°C, based on frequency after 60minutes operation. Max. 5 minutes Based on frequency after 30 days operation Max. ±10×10−9/day Based on frequency after 30 days operation Max. ±500×10−9/year Frequency/Temperature characteristics 0 to +70 °C Max. ±100×10−9 Frequency/Voltage coefficient VCC +12 V ± 5 % Max. ±50×10−9 Frequency control range Vcont +4.5 ± 4.5 V Min. ±6×10−6 Frequency change polarity Positive ■ Reference Value Offset frequency Phase noise (at 13 MHz) −70 10 Hz −100 100 Hz −120 1 kHz −140 10 kHz −140 The value of phase noise changes when the frequency changes. Pin connections #1 #7 #8 #14 9.2max 12.2 15.24 #8 Terminal number is not printed 7.62 #7 4.6 #14 Vcont GND OUTPUT VCC 4.5min 0.8max 4 - φ0.47 ± 0.1 #1 ■ List of Options mm 13max 11max ■ Dimensions 19max 21max dBc/Hz 1 Hz Tolerance ±0.5 mm -2- Power supply voltage [VCC] (V) +3.3, +5.0 Nominal frequency range (MHz) 10 to 38.88 For details of options, please feel free to contact our sales representatives. ■ List of Ordering Codes Nominal frequency (MHz) 10 NH21M13LA-10M-NSA3416A 13 NH21M13LA-13M-NSA3416A Ordering Code The above frequencies are NDK’s standard frequencies. Frequencies other than the above are available. Feel free to contact our sales representatives. 12A_1023_NH21M13LA_e