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TX-320
Temperature Compensated Crystal Oscillator
TX-320
Description
The TX-320 series surface mount TCXO can be mounted using the standard convection re ow process. Current drain to less than 5 mA is available upon request. Aging <5 ppm for ten years.
Features
* * * * Low Pro le TTL / HCMOS Output Frequency Range: 1 MHZ to 77.76 MHZ Previous Model: TC-350, C2490 * * * *
Applications
SMC Clock SONET/SDH Network Timing Sources Wireless Communications Satellite Communications
Performance Speci cations
Parameter
vs. operating temperature range (referenced to +25C)
Min
-2.5 -1.5 -2.0 -1.0 -1.5 -0.75 -1.0 -0.5 -1.0 -0.5
Typ
Max
+2.5 +1.5 +2.0 +1.0 +1.5 +0.75 +1.0 +0.5 +1.0 +0.5 +0.1 +5
Units
ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm
Condition
-55... +85C -55... +85C -40... +85C -40... +85C -20... +70C -20... +70C 0... +70C 0... +70C 0... +50C 0... +50C Vs 5% @ +70C
Frequency Stabilities1
vs. supply voltage change vs. aging / 10 years
Supply Voltage (Vs)
Supply voltage Supply voltage 3.135 4.75 3.3 5.0 3.465 5.25 VDC VDC
Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com
Performance Speci cations
Parameter Min Typ Max RF Output
Signal Load Signal Level (Vol) Signal Level (Voh) Rise/Fall Time Duty cycle Signal Load Signal Level (Vol) Signal Level (Voh) Rise/Fall Time Duty cycle Tuning Range 40 5.0 +2.4 10 60 +0.5 VDC VDC ns % ppm @ (Voh-Vol)/2 via external voltage, 0 to +Vdd 40 TTL 10 TTL with Vs=12.0V or 5.0V and 15pF load with Vs=12.0V or 5.0V and 15pF load 0.8 5 60 HCMOS/ACMOS 10 +0.5 pF V V ns % @ (Voh-Vol)/2
Units
Condition
Frequency Tuning (EFC)
Outline Drawing / Enclosure
Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com
Recommended Pad Layout
Recommended Re ow Pro le
Note: TCXO's are precision subsystems with tolerances measured to 0.01 ppm. Non-Hermetically sealed TCXO's should not be subjected to a wash process that will immerse the TCXO in solvents. NO CLEAN is the recommended procedure. The TX-320 series of TCXO's has been designed for pick and place re ow soldering. The suggested re ow pro le is shown above. The TCXO may be relfowed one time in the non-inverted state. Typical frequency shift as a result of re ow is <1.0 ppm per re ow. VI recommends waiting at least two hours after re ow below measuring the unit.
Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com
Output Loads
Standard Shipping Method
The Standard ship method for volume production of the TX-320 series is in a matrix tray. These trays are 100% recyclable. The trays also o er the added feature that they can be continuously feed into a pick-n-place machine eliminating the down time required with tape-n-reel.
Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com
Handling Precautions
Although protection circuitry has been designed into this device, proper precautions should be taken to avoid exposure to electrostatic discharge (ESD) during handling and mounting. VI employs a human-body model *HBM) and a charged-device model (CDM) for ESD-susceptibility testing and protection design evaluation. ESD voltage thresholds are depending on the circuit parameters used to de ne the mode. Although no industry-wide standard has been adopted for the CDM, a standard HBM (resistance =1500 ohms, capacitance - 1000 pf ) is widely used and therefore can be used for comparison purposes. The HBM ESD threshold presented here was obtained by using these circuit parameters. ESD Threshold Voltage Model Human-Body (HBM) Charged-Device Threshold 500 500 Unit V min V min
Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com
Ordering Information
TX - 320 0 - D A T - 106
Product Family TX: TCXO Package 18 x 23 mm Height 0: C3.81mm Supply Voltage D: 5 Vdc E: 3.3Vdc RF Output Code A: HCMOS/ACMOS B: TTL
X - 10M0000000
Frequency Option X: No Option Stability Code 507: 0.5ppm 757: 0.75ppm 106 1.0ppm 156: 1.5ppm 206: 2.0ppm 256: 2.5ppm
Temperature Range A: -55C to +85C E: -40C to +85C J: -20C to +70C T: 0C to +70C P: 0C to +50C
Notes: 1. Contact factory for improved stabilities or additional product options. Not all options and codes are available at all frequencies. 2. Unless other stated all values are valid after warm-up time and refer to typical conditions for supply voltage, frequency control voltage, load, temperature (25C). 3. Phase noise degrades with increasing output frequency. 4. Subject to technical modi cation. 5. Contact factory for availability.
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:
Vectron International 1F-2F, No 8 Workshop, No 308 Fenju Road WaiGaoQiao Free Trade Zone Pudong, Shanghai, China 200131 Tel: 86.21.5048.0777 Fax: 86.21.5048.1881
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: 2/19/2009 daf Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * http://www.vectron.com

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