TX-320 Temperature Compensated Crystal Oscillator TX-320 Description The TX-320 series surface mount TCXO can be mounted using the standard convection reflow process. Current drain to less than 5 mA is available upon request. Aging <5 ppm for ten years. Features Applications • Low Profile • TTL / HCMOS Output • Frequency Range: 1 MHZ to 77.76 MHZ • Previous Model: TC-350, C2490 • SMC Clock • SONET/SDH Network Timing Sources • Wireless Communications • Satellite Communications Performance Specifications Parameter Min Typ Max Units Condition Frequency Stabilities1 vs. operating temperature range (referenced to +25°C) -2.5 -1.5 -2.0 -1.0 -1.5 -0.75 -1.0 -0.5 -1.0 -0.5 vs. supply voltage change vs. aging / 10 years +2.5 +1.5 +2.0 +1.0 +1.5 +0.75 +1.0 +0.5 +1.0 +0.5 ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm -55… +85°C -55… +85°C -40… +85°C -40… +85°C -20… +70°C -20… +70°C 0… +70°C 0… +70°C 0… +50°C 0… +50°C +0.1 +5 ppm ppm Vs ± 5% @ +70°C Supply Voltage (Vs) Supply voltage 3.135 3.3 3.465 VDC Supply voltage 4.75 5.0 5.25 VDC Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Performance Specifications Parameter Min Typ Max Units Condition RF Output HCMOS/ACMOS Signal Load 10 Signal Level (Vol) Signal Level (Voh) pF +0.5 0.8 V Rise/Fall Time Duty cycle 40 Signal V 5 ns 60 % Load 10 TTL Signal Level (Vol) Signal Level (Voh) +0.5 +2.4 Rise/Fall Time Duty cycle @ (Voh-Vol)/2 TTL 40 VDC with Vs=12.0V or 5.0V and 15pF load VDC with Vs=12.0V or 5.0V and 15pF load 10 ns 60 % @ (Voh-Vol)/2 Frequency Tuning (EFC) Tuning Range ±5.0 ppm via external voltage, 0 to +Vdd Outline Drawing / Enclosure Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Recommended Pad Layout Recommended Reflow Profile 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 reflow soldering. The suggested reflow profile is shown above. The TCXO may be relfowed one time in the non-inverted state. Typical frequency shift as a result of reflow is <1.0 ppm per reflow. VI recommends waiting at least two hours after reflow 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 offer 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 define 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 Threshold Unit Human-Body (HBM) 500 V min Charged-Device 500 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 X - 10M0000000 Frequency Product Family TX: TCXO Package 18 x 23 mm Stability Code 507: ±0.5ppm 757: ±0.75ppm 106 ±1.0ppm 156: ±1.5ppm 206: ±2.0ppm 256: ±2.5ppm Height 0: C3.81mm Supply Voltage D: 5 Vdc E: 3.3Vdc RF Output Code A: HCMOS/ACMOS B: TTL Tuning Option A: Standard, Pin 2 EFC B: Enable high (or floating) on pin 2, No EFC C: No EFC or Enable, pin 2 NC Temperature Range A: -55°C to +85°C E: -40°C to +85°C J: -20°C to +70°C T: 0°C to +70°C P: 0°C to +50°C 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 (25°C). 3. Phase noise degrades with increasing output frequency. 4. Subject to technical modification. 5. Contact factory for availability. 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: 2-18-2014 jar Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com