VT-820

VT-820 Temperature Compensated Crystal Oscillator Previous Vectron Model VTM3 VT-820 Description Vectron’s VT-820 Temperature Compensated Crystal Oscillator (TCXO) is a quartz stabilized, clipped sine wave output, analog temperature compensated oscillator, operating off either 1.8, 2.8, 3.0 or 3.3 volt supply, hermetically sealed 3.2x2.5 ceramic package. Features • • • • • • ±0.5pmm Temperature Stability Clipped Sine Wave Output Output Frequencies to 45 MHz Fundamental Crystal Design Optional VCXO Function available Hermetically Sealed Ceramic SMD package • • • • • • • • • Applications GPS WiMAX, Wi-Fi,Wi-LAN Seismic Exploration Wireless Communications Base Stations Point to point radios Broadband Access Test Equipment Handsets • Product is compliant to RoHS directive and fully compatible with lead free assembly Block Diagram VDD Crystal Output Analog Temperature Comp. Vcontrol or NC Gnd Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Page1 Performance Specifications Specifications Table 1. Electrical Performance Parameter Output Frequency Supply Voltage, (Ordering Option) Supply Current, 8 to 19.999MHz 20.000 to 31.9999MHz 32.000 to 45.000MHz Operating Temperature, (Ordering Option) Stability Over TOP, (Ordering Option) Initial Accuracy, “No Adjust” Option Power Supply Stability Load Stability Aging Pull Range, (Ordering Option) Control Voltage to reach Pull Range 1.8V option Control Voltage Impedance Output Level Output Load Phase Noise, 10.000MHz 10Hz 100Hz 1kHz 10kHz 100kHz Start Up Time 1. The VT-820 power supply pin should be filtered, eg, a 0.1 and 0.01uf capacitor 2. The Output is DC coupled -91 -116 -137 -149 -150 10 ms 2 1 Symbol fO VDD IDD Min. 8 Typ +1.8, 2.8, +3.0 or +3.3 Max 45 1.5 2.0 2.5 Units MHz V mA TOP 0/55, -10/60, -20/70, -30/80, -30/85, -40/85 ±0.5, ±1.0, ±.5, ±2.0, ±2.5, ±3.0, ±4.0, ±5.0 ±1.0 ±0.2 ±0.2 ±1.0 °C ppm ppm ppm ppm ppm/yr ppm V V Kohm V TPR 0.5 0.3 500 VO p/p 0.8 ±5, ±8, ±10, ±12, ±15 2.5 1.5 10K II 10pF dBc/Hz Outline Drawing 3.2±0.1 Dimensions in mm Description Recommended Pad Layout 1.32±0.1 1.0±0.1 2.5±0.1 Frequency Date Code 1.02±0.1 0.45±0.1 0.8±0.1 1.60±0.1 1.27±0.1 1 2 3 0.9±0.1 0.08±0.1 Table 2. Pinout Pin # 1 2,5,7,8 3 4 6 Symbol VC TCXOPROG GND fo VDD Function TCXO Control Voltage or Ground TCXO Programming, DO NOT CONNECT Electrical and Lid Ground Output Frequency Supply Voltage 7 8 1.3±0.1 6 5 4 0.6±0.1 Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Page2 Outline Drawing 3.2±0.2 4 3 Recommended Pad Layout 1.0±0.1 2.5±0.2 Frequency Date Code 1.65 1.25 1 2 2.60 1.0 max 1 2 0.65 Package drawing for the ±0.5ppm over -30/80°C and