VT-820 Temperature Compensated Crystal Oscillator Previous Vectron Model VTM3 VT-820 Description Vectrons VT-820 Temperature Compensated Crystal Oscillator (TCXO) is a quartz stabilized, clipped sine wave output, analog temperature compensated oscillator, operating o either 1.8, 2.8, 3.0 or 3.3 volt supply in a hermetically sealed 3.2x2.5mm ceramic package. Features Applications 0.5ppm Temperature Stability GPS Clipped Sine Wave Output WiMAX, Wi-Fi,Wi-LAN Output Frequencies to 50 MHz Seismic Exploration Fundamental Crystal Design Wireless Communications Optional VCXO Function available Base Stations Hermetically Sealed Ceramic SMD package Point to point radios Broadband Access Product is compliant to RoHS directive Test Equipment and fully compatible with lead free assembly Handsets Block Diagram Output V DD Crystal Analog Temperature Comp. Vcontrol or NC Gnd Page1Performance Speci cations Speci cations Table 1. Electrical Performance Parameter Symbol Min. Typ Max Units Output Frequency f 8 45 MHz O 1 Supply Voltage, (Ordering Option) V +1.8, 2.8, +3.0 or +3.3 V DD Supply Current, 8 to 19.999MHz I 1.5 mA DD 20.000 to 31.9999MHz 2.0 32.000 to 45.000MHz 2.5 Operating Temperature, (Ordering Option) T -20/70, -30/80, -40/85 C OP Stability Over T , (Ordering Option) 0.5, 1.0, 1.5, 2.0, 2.5 ppm OP 2 Initial Accuracy , No Adjust Option 1.0 ppm Power Supply Stability, 5% change 0.2 ppm Load Stability 0.2 ppm Aging 1.0 ppm/yr Pull Range, (Ordering Option) TPR 5, 10 ppm Control Voltage to reach Pull Range 0.5 2.5 V 1.8V option 0.3 1.5 V Control Voltage Impedance 500 Kohm 3 Output Level V p/p 0.8 V O Output Load 10K II 10pF 4 Phase Noise , 10.000MHz dBc/Hz 10Hz -91 100Hz -116 1kHz -137 10kHz -149 100kHz -150 Start Up Time 2 ms 1. The VT-820 power supply pin should be ltered, eg, a 0.1 and 0.01uf capacitor. 2. Initial Accuracy is before IR re ow. Allow another 1ppm shift through 2 re ows and 24 hours. 3. The Output is DC coupled. 4. Measured at room ambient temperature using an Agilent E5052 Signal Source Analyzer. Outline Drawing Marking Marking XXMXXX XXMXXX V XXMXXX V XXMXXX .YWWC XXMXXX = Frequency .YYWWC V = Vectron .YWWC XXMXXX = Frequency YY = Year .YYWWC WW = Week YY = Year C = Manufacturing WW = Week Location C = Manufacturing Location Dimensions in mm Primary Package Page2