OX-203 Holdover Reference Oscillator OX-203 Description The Holdover Reference Oscillator family is designed specifically to meet the need for a high accuracy cost effective backup reference. These high stability oscillators will provide consistent, repeatable, extended holdover to the stated phase accuracy - making them ideal for applications where GPS, 1588 or other sources of timing are intermittent or prone to extended periods of unavailability. Features Applications • Available in 8 hour and 24 hour version • Holdover accuracy available to ≤8μs and ≤1μs • Specifically designed for inter-operability with existing designs based on conventional OCXO’s. • Advanced digital compensation techniques take place inside the Holdover Reference - no need for programming or other user intervention. • Precision Timing Applications in: • Wireless Base Stations • Wireless Backhaul • Digital Video Broadcast • Low latency optical networking • Power distribution • Test and Measurement Specifications Parameter Max Units 20 MHz Holdover Accuracy over 8 hours (ordering option) 8.0 μs 150C range, Vs ±5%, Load +-5%, after 24 hours of operation Holdover Accuracy over 8 hours (ordering option) 1.0 μs 150C range, Vs ±5%, Load +-5%, after 24 hours of operation Holdover Accuracy over 24 hours (ordering option) 8.0 μs 150C range, Vs ±5%, Load +-5%, after 24 hours of operation 5 minutes to ±10ppb of final frequency (1 hour reading) @25 0C Ouput Frequency Warm up time Min 5 Typical Condition Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Specifications (continued) Parameter Min Typical Max Units Condition Supply Supply voltage 5.25 Vdc Power Consumption 4.75 5 3.1 Watts during warmup Power Consumption 1.5 Watts steady state at 25 0C Output Signal HCMOS Load 15 pF Signal Level (Vol) 0.5 Signal Level (Voh) 3.5 Duty Cycle 40 60 Signal 50 0 Spurious Tuning Range Linearity With Vs=5.0 and 15pF load % @ (Voh-Vol)/2 6 dBm 50 Ohm Load -25 dBc 50 Ohm Load -65 dBc 50 Ohm Load Fixed OCXO; No adjustment +-0.15 +-0.4 ppm 3.3 Vdc With Vs = 5.0 Vdc @10MHz 10% Tuning Slope Control Voltage Range Vdc Ohm 3 Sub Harmonics Tuning Range With Vs=5.0 and 15pF load Sine Wave Load Output Power @ 5.0V Vdc Positive 0 1.65 Phase Noise 1 Hz -98 -90 dBc/Hz Phase Noise 10 Hz -125 -120 dBc/Hz Phase Noise 100 Hz -135 -130 dBc/Hz Phase Noise 1kHz -143 -138 dBc/Hz Phase Noise 10kHz -150 -145 dBc/Hz Maximum Ratings Maximum supply voltage 6.0 Vdc Maximum output load 50 pF Operable Temperature Range -40 85 0C Storage Temperature Range -55 85 0C Mechanical Weight Dimensions 16.0 g 25.8x25.8x15.35 mm Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Typical Performance Data Holdover Perfomance - 96 Hours MTIE and TDEV - 0.3mHz loop filter bandwidth Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Outline Drawing Pin Assignment Pin Connection 1 RF Output 2 Do Not Connect 4 Case Ground 6 Do Not Connect 7 EFC (Frequency Control) 13 Do Not Connect 15 Do Not Connect 17 Do Not Connect 19 Supply Voltage Ordering Information OX - 203 1 - D A E - 808 0 - 10M0000000 Product OX: OCXO Frequency Frequency Control 0: No Tuning 1: ±0.15 to ±0.4ppm Package Type 203: THT Version Height 1: 15.35mm Supply Voltage D: 5.0V Output A: HCMOS E: Sinewave Holdover Range 808: 8μs over 8 hours 824: 8μs over 24 hours Temperature Range 108: 1μs over 8 hours E: -40 to +85 0C J: -20 to +70 0C P: 0 to +50 0C *Note: not all combination of options are available. Other specifications may be available upon request. 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. Revision 10/06/2011 Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com