MD-023 Extended Holdover Crystal Oscillator MD-023 The MD-023 series is the first product to be in introduced in Vectron’s Extended Holdover Crystal Oscillator platform. With aging rates of 0.08ppb/day and temperature stabilities of 0.1ppb from 0 to 700C, the MD-023 is capable of providing holdover of 6 µs for 24 hours over a 100C temperature change. The product employs an ultrastable ovenized quartz oscillator with proprietary Vectron digital correction algorithms to achieve rubidium like performance at a fraction of the cost and power. Features Applications • 3G Basestations (WCDMA, CDMA2000) • LTE • WiMAX Basestations • Digital Video Broadcast • E911 Location Systems • General Timing and Synchronization • Military Radio • Ultrastable 10 MHz OCXO • Proprietary digital correction algorithms • Digital EFC adjust • Serial communications interface standard • Low Phase Noise Outputs Block Diagram Status Indicator Serial Communications Interface Hardware Reset RF Outputs Processor/ Controller Output Frequency Generation Quartz Oscillator (OCXO or TCXO) Figure 1. Functional Block Diagram Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com 1 pps out Specifications RF Output Stability Parameter Min Typical Nominal Frequency 10 Short-term stability 5 Max Units Condition MHz 10 E-12 @ Tau = 1 sec (All conditions after 24 hours) 15 20 E-12 @ Tau = 10 sec -95 dBc/Hz @ 10Hz offset -125 dBc/Hz @ 100Hz offset -140 dBc/Hz @ 1kHz offset -145 dBc/Hz @ 10kHz offset -145 dBc/Hz @>10kHz offset Frequency Temperature Stability 0.1 ppb pk-pk 0 to 70 0C Aging 0.08 ppb/day after 7 days on power Phase noise (All conditions) Frequency Pullability +/-500 Frequency resolution ppb 1 E-12 20 bit DAC Max Units Conditions 6 µs Holdover Capability Holdover Time Min Typical 24 hours after 7 days on power with a 10 0C temperature change during holdover RF Output Waveform Characteristics Waveform High-Level Output Voltage (VOH) CMOS 3.3 VDC < -0.5mA Load Low-Level Output Voltage (VOL) 0.0 0.3 VDC < 0.5mA Load Rise/Fall Time 3 5 nSec 15pF 50 60 % 15pF Duty Cycle 3.0 40 1pps Output Characteristics Waveform High-Level Output Voltage (VOH) TTL 2.4 Low-Level Output Voltage (VOL) 0.0 Pulse width 10 3.6 VDC 0.5 VDC µs TTL pulse programmable from 10 to 100 µs Supply Voltage Supply voltage +11.4 +12 +12.6 VDC Current consumption 1500 700 mA mA During Warm-up During steady state operation AC ripple 200 mVpk-pk 10Hz to 1MHz VDC <10mA Load VDC <10mA Load VDC Load able to sink >2mA Status Indicator Module Hardware OK 0 Module Hardware Failure 3.3 0.5 Module Hardware Reset Reset Module 0 0.3 Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Package Outline and Interface Specifications Serial Communications Interface Parameter Min Rx high-level input voltage (VIH) 3.0 Typical Rx low-level input voltage (VIL) -0.3 0.0 Tx high-level output voltage(VOH) 3.0 3.3 Tx low-level output voltage (VOL) -0.3 0.0 Communications Protocol Max Units 3.3 VDC 0.3 Condition VDC VDC 0.3 VDC Command List is Vectron Custom - available on request 15 Pin I/O Connections Number Name Description 1 Vcc 12VDC in 2 Ground 3 Ground 4 Ground 5 RF output 10 MHz 6 Vcc 12VDC in 7 Ground 8 N/C 9 N/C 10 Ground 11 1pps 12 Status Indicator 1pps TTL out 13 Hardware Reset 14 Rx Serial communications Receive 15 Tx Serial Communcations Transmit Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Absolute Maximum Ratings Parameter Value Supply Voltage (Vcc) 18 VDC DC Voltage on any I/O pin 5.5 VDC Output Load 10 Ohms Environmental Conditions Parameter Conditions Operating temperature -0 ˚C to +70 ˚C Humidity @ 40˚C 90 % Storage Temperature -55 ˚C to +125 ˚C Reliability VI qualification includes aging various extreme temperatures, shock and vibration, temperature cycling, and IR reflow simulation. The MD-011 family is capable of meeting the following qualification tests: Environmental Compliance Parameter Conditions Mechanical shock MIL-STD-2002, Method 213 condition B Mechanical vibration MIL-STD-2002, Method 204 condition A Resistance to solvents MIL-STD-2002, Method 215 Handling Precautions Although ESD protection circuitry has been designed into the C6350 proper precautions should be taken when handling and mounting. VI employs a human body model (HBM) and a charged-device model (CDM) for ESD susceptibility testing and design protection evaluation. ESD Ratings Model Minimum Conditions Human body model 1500 V MIL-STD-833, Method 3015 Charged device model 1000 V JEDEC, JESD22-C101 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:6/2011 Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com