VT-840

VT-840 Temperature Compensated Crystal Oscillator, Voltage Controlled Temperature Compensated Crystal Oscillator VT-840 Description Vectron’s VT-840 Temperature Compensated Crystal Oscillator (TCXO) is a quartz stabilized, clipped sine wave output, analog temperature compensated oscillator, operating off a 1.8, 2.5, 2.8, 3.0 or 3.3 volt supply in a hermetically sealed 2.5x2.0 ceramic package. Features • • • • • • Output Frequencies to 52 MHz ±0.5ppm Temperature Stability Fundamental Crystal Design Optional VCXO Function available Low Power Hermetically Sealed Ceramic SMD package g • • • • • • • Applications Wireless Communications GPS 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 Table 1. Electrical Performance Parameter Output Frequency Supply Voltage1, ordering option Supply Current, 10.000 to 26.000MHz 26.001 to 52.000MHz Operating Temperature, ordering option Stability Over TOP, ordering option Initial Accuracy , “No Adjust” Option Power Supply Stability Load Stability Aging Pull Range, ordering option 2 Specifications Performance Specifications Symbol fO VDD IDD 2.0 2.5 TOP -20/70, -30/85, -40/85 ±0.5, ±1.0, ±1.5, ±2.0, ±2.5 ±1.0 ±0.2 ±0.2 ±1.0 TPR 0.3 0.5 500 VO p/p 0.8 10K II 10pF dBc/Hz -85 -110 -130 -148 -148 2 ms ±5, ±8, ±10, ±12 1.5 2.5 mA mA °C ppm ppm ppm ppm ppm/1st yr ppm V V Kohm V Min. 10.000 Typ +1.8, +2.5, +2.8, +3.0, +3.3 Max 52.000 Units MHz V Control Voltage to reach Pull Range, 1.8V option +2.5V, +2.8V, +3.0V and +3.3 V options Control Voltage Impedance Output Level3 Output Load Phase Noise, 26.000MHz 10Hz 100Hz 1kHz 10kHz 100kHz Start Up Time 1. The VT-840 power supply pin should be filtered, eg, a 0.1 and 0.01uf capacitor 2. Initial Accuracy is before IR reflow, allow and additional 1ppm shift through 2 reflows and 24 hours. 3. The Output is DC coupled and would normally be AC coupled with a capacitor. Outline Drawing Recommended Pad Layout Top View Dimensions in mm Table 2. Pinout Pin # 1 Bottom View 2 3 4 5 6 Symbol VC NC GND Fo NC VDD Function TCXO Control Voltage or Ground Make No Connection Electrical and Lid Ground Output Frequency Make No Connection Supply Voltage Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Page2 VCXO Function S VCXO Feature: The VT-840 can be ordered with a VCXO function for applications were it will be used in a PLL, or the output frequency needs fine tune or calibration adjustments. This is a high impedance input , 500 Kohm, and can be driven with an opamp or terminated with adjustable resistors etc. Pin 1 should not be left floating on the VCXO optional device. “No Adjust” Option: In applications were the VT-840 will not be used in a PLL , or the output frequency does not need fine tune adjustments, the best device to use would be a VT-840-xxx-xxx0. By using the “no adjust” option, the circuit is simplified as Vc does not need to be adjusted or set to a predetermined voltage and pin 1 should be grounded (pin 1 can be left open but should not be set to a voltage such as an RF signal or power supply voltage. Clipped Sine Wave Output Maximum Ratings S Absolute Maximum Ratings and Handling Precautions Stresses in excess of the absolute maximum ratings can permanently damage the device. Functional operation is not implied or any other excess of conditions represented in the operational sections of this data sheet. Exposure to absolute maximum ratings for extended periods may adversely affect device reliability. Although ESD protection circuitry has been designed into the VT-840, proper precautions should be taken when handling and mounting, VI employs a Human Body Model and Charged Device Model for ESD susceptibility testing and design evaluation. ESD thresholds are dependent on the circuit parameters used to define the model. Although no industry standard has been adopted for the CDM a standard resistance of 1.5kOhms and capacitance of 100pF is widely used and therefor can be used for comparison purposes. Table 3. Maximum Ratings Parameter Storage Temperature Supply Voltage Control Voltage ESD, Human Body Model ESD, Charged Device Model Symbol TSTORE VDD VC HBM CDM Rating -55/125 -0.6 to 6 0/VDD 1500 100 Unit ºC V V V V Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Page3 Table 4. Environmental Compliance Parameter Mechanical Shock Mechanical Vibration Temperature Cycle Solderability Fine and Gross Leak Resistance to Solvents Moisture Sensitivity Level Contact Pads Condition MIL-STD-883 Method 2002 MIL-STD-883 Method 2007 MIL-STD-883 Method 1010 MIL-STD-883 Method 2003 MIL-STD-883 Method 1014 MIL-STD-883 Method 2015 MSL1 Gold (0.5um min - 0.8um max) over Nickel IR Reflow S Suggested IR Profile Devices are built using lead free epoxy and can be subjected to standard lead free IR reflow conditions shown in Table 5. Contact pads are gold over nickel and lower maximum temperatures can also be used, such as 220C. Table 5. Reflow Profile Parameter PreHeat Time Ts-min Ts-max Ramp Up Time above 217C Time to Peak Temperature Time at 260C Time at 240C Ramp down Symbol ts Value 200 sec Max 150°C 200°C 3ºC/sec Max 150 sec Max 480 sec Max 10 sec Max 60 sec Max 6ºC/sec Max RUP tL t25C to peak tP tP2 RDN Tape & Reel Table 6. Tape and Reel Information Tape Dimensions (mm) W 8.0 F 3.5 Do 1.5 Po 4.0 P1 4.0 A 180 B 2.0 Reel Dimensions (mm) C 13 D 21.0 N 60.0 W1 9.0 W2 11.4 #/Reel Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Page4 Ordering Information Table 7. Standard Frequencies (MHz) 10.000 19.200 39.000 10.240 20.000 40.000 12.000 24.000 42.000 12.8000 25.000 44.000 14.000 25.6000 45.000 14.400 26.000 48.000 16.000 30.000 50.000 16.369 31.250 52.000 161.384 32.000 16.800 38.400 VT-840- E F J - 5070- xxMxxxxxxx Product TCXO Package 2.0x2.5 Ceramic Voltage Options E: +3.3 Vdc ±10% F: +3.0 Vdc ±10% G: +2.8 Vdc ±10% H: +2.5 Vdc ±10% J: +1.8 Vdc ±10% Output F: Clipped Sine Wave Frequency in MHz Tuning 0: Fixed, No tuning A: ±5ppm B: ±8ppm C: ±10ppm D: ±12ppm Stability 507: ±0.5ppm 106: ±1.0ppm 156: ±1.5ppm 206: ±2.0ppm 256: ±2.5ppm *Note: not all combination of options are available. Other specifications may be available upon request. Temp Range J: -20/70°C H: -30/85°C E: -40/85°C Example: VT-840-EFJ-5070-26M0000000 For Additional Information, Please Contact USA: Vectron International 267 Lowell Road Hudson, NH 03051 Tel: 1.888.328.7661 Fax: 1.888.329.8328 Europe: Vectron International Landstrasse, D-74924 Neckarbischofsheim, Germany Tel: +49 (0) 3328.4784.17 Fax: +49 (0) 3328.4784.30 Asia: VI Shanghai 1589 Century Avenue, the 19th Floor Chamtime International Financial Center Shanghai, China Tel: 86.21.6081.2888 Fax: 86.21.6163.3598 Disclaimer Vectron International reserves the right to make changes to the product(s) and or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information. Rev: 03/30/2012 Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Page5