MD-403 I2C InterfaceOven Controlled Crystal Oscillator

Transcription

1 MD-43 I2C InterfaceOven Controlled Crystal Oscillator MD-43 The MD-43 is a Vectron module that contains a medium size ovenized crystal oscillator and an I 2 C interface that communicates with an onboard EEPROM and temperature sensors. The interface enables the customer to improve upon the already exceptional stability of the oscillator. Provided in a fully hermetic 13 x 2 x 1.7mm package, the device is capable of aging rates of 1/ day and temperature stabilities of 1 from -4 to 95 C. Use of the information provided in the I 2 C interface provides a cost effective means of improving stability by as much as a factor of 1 depending upon environmental conditions. Features Surface Mount package Low Profile Compact Package Standard frequency: 1, 2, 3.72,38.88, 4 MHz Temperature stability to 1 Temperature range: -4 to 95 C Aging rate to 1 /day I 2 C interface with frequency coefficients, temperature sensor for additional correction Frequency Stabilities 1 ( 1-4 MHz) Applications Base stations Test equipment Synthesizers Military communication equipment Digital Switching Parameter Min Typical Max Units Condition vs. operating temperature range (referenced to +25 C) Residual error compare to fit curve Warm-up time 3 minutes to ±1 of final frequency (1 hour Page 1 of C to +7 C -4 to +85 C -4 to +95 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)=A 4 T 4 +A 3 T 3 +A 2 T 2 +A 1 T+A Initial tolerance vs. supply voltage change vs. load change vs. aging / day vs. aging / year vs. aging / 1 year holdover (without compensation on customer side.) Performance Specifications ppm at time of shipment, V S ±5% static Load ±5% static after 3 days of operation after 3 days of operation after 3 days of operation 2.5 µsec over 3 minutes and 1 C temp T oscillator must be for miniumum 7 days on power. holdover (with compensation on 1 over 3 minutes and 1 C temp T customer side.) 6 oscillator must be for miniumum 7 days on power.

2 Performance Specifications Supply Voltage (Vs) Parameter Min Typical Max Units Condition Supply voltage (standard) VDC Power consumption Signal [standard] HCMOS 2.5 Watts during warm-up 1. Watts steady +25 C RF Output Load 15 pf Signal Level (Vol).4 VDC with Vs=3.3V and 15pF Load Signal Level (Voh) 2.4 VDC with Vs=3.3V and 15pF Load rise time 5 ns fall time 5 ns Duty Cycle (Voh-Vol)/2 Tuning Range Phase Noise 3 Phase Noise 3 Frequency Tuning (EFC) Fixed OCXO; No adjust Additional Parameters Weight 1 g Processing & Packing Handling & Processing Note EEPROM (SCL, SDA) Pin 12; Pin 13 1 Hz 1 Hz 1 Hz 1 khz 1 khz 1khz 1 Hz 1 Hz 1 Hz 1 khz 1 khz 1 khz Parameter Min Typical Max Units Condition I2C Bus Voltage 2,8 VDC DC Electrical Characteristics High Level Input Voltage (Vih).7* VI2C VI2C +.3 Vdc Low Level Input Voltage (Vil) VI2C Vdc Electrical Characteristic SCL Clock Frequency 1 khz Communication EEPROM I2C Device 7-bit Address: Mhz SDA (internally pulled-up to V I2C with a 22kohm resistor) and SCL SDA (internally pulled-up to V I2C with a 22kohm resistor) and SCL Product is to communicate via industry standard I 2 C bus timing. I 2 C is a Phillips Semiconductor registered trademark. Product is to communicate via industry standard I 2 C bus timing. I 2 C is a Phillips Semiconductor registered trademark. Internal Temperature Sensor I2C Device 7-bit Address: 11 model LM73 For full EEPROM Map please contact factory Page 2 of 8

3 11,6 3 6 H+,22/-,32 1,8 Absolute Maximum Ratings supply voltage (Vs) 5.5 V with Vs=3.3 & 5. VDC Output Load 5 pf Operable Temperature Range C Storage Temperature Range C Outline Drawing / Enclosure 15,24,1 MD-43 Height H cover material 1,7 mm metal 5,8,1 1,8 1,16,1 Pin Connections 1 I.C (int. connected, do not connect) 5 WP (Write protect; I2C) 6 I.C (int. connected, do not connect) 7 Ground (Case) 8 RF Output 12 SDA (I2C) 13 SCL (I2C) 14 Supply Voltage Input (Vs) 2,1,2 12,6,2 1,15 top view original size recommended PCB Layout 2 5,8 1,16 15,24 Dimensions in mm Page 3 of 8

4 .2 ±.5 Standard Shipping Method (MD-43 ) K A Lage im Gurt Position in tape Pin ±.1 B XXXXX XXXXX B B W Abwickelrichtung Unwinding direction Schnitt A - A R.75 A A P Schnitt B - B Bei W < 32mm nur obere Lochreihe vorhanden if W < 32mm only upper hole line existent Maßangaben in mm: Dimension in mm: A, B und K Maße von Bauelement abhängig A, B und K are dependent uppon component dimensions Fertigungstoleranzen entsprechen der DIN IEC production tolerance complying DIN IEC All dimensions in millimeters unless otherwise stated Enclosure Type Tape Width W (mm) Quantity per meter Quantity per reel Dimension P MD Recommended Reflow Profile IPC/JEDEC J-STD-2 (latest revision) Additional Information: This SMD oscillator has been designed for pick and place reflow soldering. SMD oscillators must be on the top side of the PCB during the reflow process. Additional Environmental Conditions Parameter Rapid temperature changes Vibration Shock Solderability Description MIL-8831 Cond B 1 cycles -55/125C MIL-STD-883 Meth 27 Cond A 2G 2-2Hz 4x in each 3axis 4 min Mech.Shock MIL-STD-22 Meth 213 Cond.C 1G 6ms 6 shocks in each direction J_STD_2C Cond A, Through hole device/ Cond. B, SMD 255C (diving time 5,5sec.) Dip+Look with 8h damp pre-treatment: solder wetting >95% Solvent resistance MIL-STD-883 Meth 215 Solv. 1,3,4 ESD Moisture Sensit. RoHS compliance Washable HBM JESD22-A114-F Class 1C 1* 1V Level 1 JESD22-A113-B 1% RoHS 6 compliant washable device Note: All temperatures refer to topside of the package, measured on the package body surface. Page 4 of 8

5 typical performance data typical warm up typical temperature stability Frequency deviation [] Time [sec] df/f [] Temperaure [ C] typical Phase Noise typical residual error compare to fit curve,6,4 Residual error compare to fit curve [], ,2 -,4 -,6 Temperature [ C] Page 5 of 8

6 typical performance data typical aging data typical frequency vs. supply voltage 2, 4, 1,5 3,5 1, 3, Frequency deviation [],5, -,5-1, 2,5 2, 1,5 1, Supply voltage [V] -1,5,5-2,, Time [sec] typical ADEV typical retrace 68 hours power on; 24 hours power off; 24 hours power on 2, 1,5 Frequency deviation [] 1,,5,, 2, 4, 6, 8, 1, 12, 14, -,5-1, -1,5 Time [hours] Page 6 of 8

7 typical performance data typical case temperature vs. outside temperature typical power consumption vs. operating temperature Temperature 1 cm above oscillator [ C] 4 2 Current [ma] Ambient temperature [ C] Temperature Test Chamber [ C] recommended power on time after x days of power off 1 power on time before fine adjustment [hours ] storage time [days] Page 7 of 8

8 Ordering Information MD E A E M Product Family OX: OCXO Package SMD version: 43 Frequency Frequency Control : No Tuning Height 2: 1,7 mm Stability Code 18±1 Supply Voltage E: 3.3V RF Output Code A: HCMOS Temperature Range J: -2 C to +7 C E: -4 C to +85 C 8: -4 C to +95 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. 6. final results depend on the compensation algorithm, position on the board, shielding against airflow and other For Additional Information, Please Contact USA: Vectron International 267 Lowell Road Suite 12 Hudson, NH 351 Tel: Fax: Europe: Vectron International Landstrasse, D Neckarbischofsheim, Germany Tel: +49 () Fax: +49 () Asia: Vectron International 68 Yin Cheng Road(C), 22nd Floor One LuJiaZui Pudong, Shanghai 212, China Tel: Fax: 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: Page 8 of 8