Crystal Oscillator Model Name NT7050BC Temperature-Compensated Crystal Oscillator (TCXO) ■ Main Application Reference clock for Stratum 3. Reference clock for Femtocell. ■ Features ● Excellent temperature characteristics. ● Low power consumption. ● Compact. ● Excellent aging characteristics. ■ Specifications Model Item NT7050BC Nominal frequency (MHz) 19.2, 20, 26 Supply voltage [VCC] (V) +3.3 ± 5% Current consumption (mA) Max. 10 Output level CMOS (VOH>2.9, VOL>0.4) Symmetry (%) 40 to 60 Load impedance (pF) 15 Operating temperature range (°C) –20 to +70 Storage temperature range (°C) Frequency/Temperature characteristics Frequency/Voltage coefficient –40 to +85 Max. ±0.28×10–6 Max. ±0.1×10–6 Long-term frequency stability Max. ±3×10–6/10years Frequency control range Min. ±5×10–6/1.65 V±1.65 V Enable/Disable function Enable : 70%VCC to VCC or OPEN ■ Dimensions Disable : 0V to 30%VCC ■ List of Ordering Codes mm Terminal land connections 5 #1 Do not connect #6 Do not connect #2 NC #7 #3 NC #8 Enable/Disable NC #4 GND #9 VCC #5 OUTPUT #10 Vcont Frequency (MHz) 19.2 20 26 Ordering Code NT7050BC-19.2M-NSA3517A NT7050BC-20M-NSA3517A NT7050BC-26M-NSA3517A The above frequencies are NDK’s standard frequencies. Frequencies other than the above are available. Feel free to contact our sales representatives. #1 6-0.6 #2 4-0.9 1.27 1.27 #3 #8 #7 2.54 #6 1.1 3.2 4.9 1.30 #5 1.27 1.27 #9 2.54 #4 #10 6-0.8 4-.08 2 7 1.45 0.9 #1, #6 : Please do not connect with terminal. #9 : Please connect a 0.01 μF bypass capacitor near the VCC terminal. - 15 - 12A_0821_NT7050BC_e