MD-173 High Stability Coefficient Oscillator I C interface Oven Controlled Crystal Oscillator 2 MD-173 The MD-173 is a Vectron “Coefficient Oscillator” (CCXO) that contains a high-stability ovenized crystal oscillator and an I2C interface that communicates with temperature and current sensors, and an onboard EEPROM. The interface enables the customer to improve upon the already exceptional stability of the oscillator. Provided in a fully hermetic 28 x 38 mm package, the device is capable of aging rates of ≤ 0.06 ppb/day and uncorrected temperature stabilities of 0.4ppb from 0 to 70 0C. Use of the information provided in the I2C interface provides a cost effective means of further improving temperature stability. Features Applications • Reflow process compatible • Uncorrected temperature stability to 0.4 ppb • Aging rate to 0.06 ppb/day • Frequency range 5 to 20 MHz • Standard frequencies: 5, 10, 12.8, 20 MHz • I2C interface with frequency coefficients, temperature sensor, and current sensor • LTE base stations • Rubidium replacement • Military communication equipment Performance Specifications Frequency Stabilities1 (Stabilities listed for ≤10 MHz. For stabilities > 10 MHz refer to page 6) Parameter Min Typical Max Units Condition vs. Operating Temperature Range (referenced to +25°C) (uncorrected) -0.4 -0.6 -0.8 +0.4 +0.6 +0.8 ppb ppb ppb 0 to +70°C -20 to +70°C -40 to +85°C Initial Tolerance vs. Supply Voltage Change vs. Load Change vs. Aging / Day vs. Aging / Day vs. Aging/ Day vs. Aging / 1st Year vs. Aging / Year (following year) vs. Aging/ 10 years Hysteresis -25 -0.5 -0.2 -1 -0.1 -0.06 -15 -10 -75 -0.2 +25 +0.5 +0.2 +1 +0.1 +0.06 +15 +10 +75 +0.2 ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb at time of shipment, nominal EFC VS ±5% Load ±5% after 24 hours operation after 72 hours operation after 7 days operation after 72 hours operation -10 +10 ppb 5 minutes Retrace2 Warm-up Time after 72 hours operation maximum 4th order curve fit error over -40 to 85 10 oC/hour to ±10ppb of final frequency (1 hour reading) @ +25°C Improved Frequency versus temperature F(T) performance obtained using on board temperature sensor (T) and frequency vs. temperature coefficients (An)stored in EEPROM, using formula: F(T)=A4T4+A3T3+A2T2+A1T+A0 Page 1 of 6 Vectron International • 267 Lowell Road, Unit 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Performance Specifications Supply Voltage (Vs) Parameter Supply Voltage (Vs) Min Typical Max Units 4.75 5.0 5.25 VDC Ordering code D 11.4 12.0 12.6 VDC Ordering code B , temp stability T and J only 4.5 Watts during warm-up, all temperatures 1.8 Power Consumption Condition Watts steady state @ +25°C 4 Watts steady state @ -40°C 1.0 Watt steady state @ +85°C 2 s time required to achieve 90% of amplitude -30 dBc frequencies ≥10 MHz RF Output Start Time 1 Subharmonics Signal [standard] HCMOS Load 15 pF Signal Level (Vol) 0.5 Signal Level (Voh) 3.5 Duty Cycle 45 55 Signal VDC with Vs=5.0V & 12V and 15pF Load VDC with Vs=5.0V & 12V and 15pF Load % @ (Voh-Vol)/2 Sine Wave Load 50 Output Power @ 5.0V,12 V +5 Ω +8 Harmonics +11 dBm -40 dBc Frequency Tuning (EFC) Tuning range ±150 Linearity ±350 10 Tuning Slope ppb 16 bit DAC controlled through I2C interface (fixed frequency option available) % Positive Additional Parameters Parameter Max Units Phase noise3 -95 -125 -135 -140 -145 dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz Allan Deviation 5e-12 8e-12 1e-11 5e-11 g-sensitivity Weight Min Typical 1 Condition 1 Hz 10 Hz 100 Hz 1 kHz 10 kHz @ 10MHz 1 s tau 10 s tau 100 s tau 1000 s tau @ 10MHz ppb/g 30 g Page 2 of 6 Vectron International • 267 Lowell Road, Unit 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com EEPROM (SCL, SDA) Pin 1, Pin 2 Parameter Min Typical BUS voltage Max Units 3.3 SCL Clock Frequency V 0 Communications Condition 100 kHz 22.1 kOhm pull-up resistor used on SDA and SCL lines Reference I C Protocol 2 AC electrical characteristics -40 to 85 oC for all parameters Devices and addresses EEPROM - Atmel AT24C08C for EEPROM, address 1010100-1010111 Temperature Sensor - LM73 (set to 14 bit resolution), address 1001000 Current Sensor – MCP3021, address 1001101 DAC for EFC - TI DAC8571, address 101100 Reserved Addresses (used by factory) 1010100x 1010101x 1010110x 1010111x 1001000x 1001101x 0101001x 0101010x 0101000x 1001100x 1110111x For full EEPROM Map please contact factory Absolute Maximum Ratings Output load 25 Operable temperature range -55 15.0 VDC 50 open pF Ohms CMOS Sine °C Operable temperature range implies the device will continue to operate with no longterm damage to unit; however, it will not be specification compliant outside the operating temperature range. +95 Environmental and Product Classification Shock (Endurance) MIL-STD-202, Method 213, Condition J, 30g 11 ms Sine Vibration (Endurance) MIL-STD-202, Method 201 and 204, Condition A, except 5g to 500 Hz, 1 sweep each axis Random Vibration (Endurance) MIL-STD-202, Method 214, Condition I-D Humidity MIL-STD-202, Method 103, Condition B, 100% rh Seal MIL-STD-202, Method 112, Condition D, hermetic, washable Altitude MIL-STD-202, Method 105, sea level to space Resistance to Soldering Heat MIL-STD-202, Method 210, Condition A,B,C Terminal Strength MIL-STD-202, Method 211, Condition C (5 bends at 45o, 2 lbs) Moisture Sensitive Level 1 RoHS 6 (fully compliant) Storage Temperature Range -55 +125 °C Page 3 of 6 Vectron International • 267 Lowell Road, Unit 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Frequency vs temperature plot -uncorrected Blue line - measured data Red line - curve fit of data. Page 4 of 6 Vectron International • 267 Lowell Road, Unit 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Outline Drawing / Enclosure Through hole Package configuration A Height “H” Pin Length “L” 19 max 4.5 mm min 0 Pin Connections 1 I2C Clock 2 I2C Data 3 Supply Voltage Input (Vs) 4 RF Output 5 Ground (Case) Dimensions in mm Surface mount Package configuration B 1 Height “H” Pin Length “L” 20.3 max 4.5 mm min Pin Connections 4,5,6,7, 11,12,13 No Connect 1 I2C Clock 2 I2C Data 3 Supply Voltage Input (Vs) 8 RF Output 9,10 Ground (Case) all dimensions in mm Page 5 of 6 Vectron International • 267 Lowell Road, Unit 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Ordering Information4 MD - 173 0 - D A E - 109 1 - 10M0000000 Product Family MD: Module Frequency 5M00000000 10M0000000 12M8000000 20M0000000 (others available on request) Model 173 Package 0: package A - THT 1: package B - SMD Supply Voltage B: 12V D: 5V Temperature Range E: -40°C to +85°C J: -20°C to +70°C T: 0°C to +70°C RF Output Code A: HCMOS E: Sinewave Frequency Control 0:Fixed frequency Stability Code 1: ±150to ±350ppb 400: ± 0.4 ppb 600: ± 0.6 ppb 800: ±0.8ppb 109: ±1.0 ppb 159:±1.5 ppb 209:±2.0 ppb Stability code - Temperature and Frequency Options Frequency 0 to +70 oC -20 to +70 oC -40 to +85oC 5 to 10 MHz 400 600 800 > 10 MHz 109 159 209 Additional Ordering Options Additional ordering options available include custom aging rates, custom temperature ranges, custom temperature stabilities, custom phase noise requirements, and improved g-sensitivity. These modifications require a custom dash number - please contact the factory for additional information. Design Tools Vectron stocks the following items for small orders and prototype development: MD-1730-DEE-8000-5M00000000 Vectron stocks the following evaluation board for this product: OCXO Evaluation Board Application Notes: Coefficient Oscillators Notes: 1. Unless otherwise stated, all values are valid after warm-up time and refer to typical conditions for supply voltage, frequency control voltage, load, and temperature (25°C). 2. Retrace defined as f1-fo where fo is the reading after the unit has been on power for 24 hours, and f1 is the frequency after 24 hours off followed by 60 minutes on. 3. Phase noise degrades with increasing output frequency. 4. Not all options and codes available at all frequencies. USA: Vectron International 267 Lowell Road, Suite 102 Hudson, NH 03051 Tel: 1.888.328.7661 Fax: 1.888.329.8328 For Additional Information, Please Contact 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:12/16/14 dmc Page 6 of 6 Vectron International • 267 Lowell Road, Unit 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com