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 Applications • Output Frequencies to 52 MHz • ±0.5ppm Temperature Stability • Fundamental Crystal Design • Optional VCXO Function available • Low Power • Hermetically Sealed Ceramic SMD package • 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 Output VDD Crystal Analog Temperature Comp. Vcontrol or NC Gnd Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Page1 Specifications Performance Specifications Table 1. Electrical Performance Parameter Output Frequency Symbol Min. fO 10.000 Supply Voltage1, ordering option VDD Supply Current, 10.000 to 26.000MHz 26.001 to 52.000MHz IDD Operating Temperature, ordering option TOP Typ Max Units 52.000 MHz +1.8, +2.5, +2.8, +3.0, +3.3 V 2.0 2.5 Stability Over TOP, ordering option mA mA -20/70, -30/85, -40/85 °C ±0.5, ±1.0, ±1.5, ±2.0, ±2.5 ppm Initial Accuracy , “No Adjust” Option ±1.0 ppm Power Supply Stability ±0.2 ppm Load Stability ±0.2 ppm ±1.0 ppm/1st yr 2 Aging Pull Range, ordering option TPR ±5, ±8, ±10, ±12 Control Voltage to reach Pull Range, 1.8V option +2.5V, +2.8V, +3.0V and +3.3 V options 0.3 0.5 Control Voltage Impedance Output Level3 VO p/p ppm 1.5 2.5 V V 500 Kohm 0.8 V Output Load 10K II 10pF 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 XXXX YWW Yww W dBc/Hz -85 -110 -130 -148 -148 2 ms Recommended Pad Layout Marking Information Line 1 XXXX - Frequency (Example: 4500 for 45MHz) YWW - Date Code of Crystal Y - Year WW - Week of the Year Line 2 Yww - Date Code of TCXO Y - Year ww - Week of the Year W- Manufacturing Location - Pin 1 Indicator Table 2. Pinout Pin # Bottom View Dimensions in mm Symbol Function 1 VC TCXO Control Voltage or Ground 2 NC Make No Connection 3 GND Electrical and Lid Ground 4 Fo Output Frequency 5 NC Make No Connection 6 VDD Supply Voltage Vectron International • 267 Lowell Road, Suite 102, 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 Symbol Rating Unit Storage Temperature TSTORE -55/125 ºC Supply Voltage VDD -0.6 to 6 V Control Voltage VC 0/VDD V ESD, Human Body Model HBM 1500 V ESD, Charged Device Model CDM 100 V Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Page3 Table 4. Environmental Compliance Parameter Condition Mechanical Shock MIL-STD-883 Method 2002 Mechanical Vibration MIL-STD-883 Method 2007 Temperature Cycle MIL-STD-883 Method 1010 Solderability MIL-STD-883 Method 2003 Fine and Gross Leak MIL-STD-883 Method 1014 Resistance to Solvents MIL-STD-883 Method 2015 Moisture Sensitivity Level MSL1 Contact Pads 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 Symbol Value PreHeat Time Ts-min Ts-max ts 200 sec Max 150°C 200°C Ramp Up RUP 3ºC/sec Max Time above 217C tL 150 sec Max Time to Peak Temperature t25C to peak 480 sec Max Time at 260C tP 10 sec Max Time at 240C tP2 60 sec Max Ramp down RDN 6ºC/sec Max Tape & Reel Table 6. Tape and Reel Information Tape Dimensions (mm) Reel Dimensions (mm) W F Do Po P1 A B C D N W1 W2 8.0 3.5 1.5 4.0 4.0 180 2.0 13 21.0 60.0 9.0 11.4 Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Page4 #/Reel Ordering Information Table 7. Standard Frequencies (MHz) 10.000 10.240 12.000 12.8000 14.000 14.400 16.000 16.369 16.384 16.800 19.200 20.000 24.000 25.000 25.6000 26.000 30.000 31.250 32.000 38.400 39.000 40.000 42.000 44.000 45.000 48.000 50.000 52.000 VT-840- E F J - 5070- xxMxxxxxxx Product TCXO Frequency in MHz Tuning 0: Fixed, No tuning A: ±5ppm B: ±8ppm C: ±10ppm D: ±12ppm 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% Stability 507: ±0.5ppm 106: ±1.0ppm 156: ±1.5ppm 206: ±2.0ppm 256: ±2.5ppm Output F: Clipped Sine Wave *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 Revision History Revision Date Approved Description May 17, 2013 VN Removed 4-pad package option and retained only the 6-pad ppackage option. Oct 29, 2013 VN Updaetd Asia contact information Feb 11, 2014 VN Updated Vectron Logo and Hudson address Sep 17, 2015 VN Added Product Marking Information For Additional Information, Please Contact USA: Vectron International 267 Lowell Road, Suite 102 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: Vectron International 68 Yin Cheng Road (C), 22nd Floor One LuJiaZui Pudong, Shanghai 200120, China Tel: +86.21.6194.6886 Fax: +86.21.6194.6699 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: 09/17/2015 Vectron International • 267 Lowell Road, Suite 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Page5