VMEM

VMEM Military Clock Oscillator VMEM Description Vectron’s VMEM high shock resistant Clock Oscillator is the next generation ruggedized silicon MEMS based stabilized square wave generator with a CMOS output, operating off a +1.8, +2.5, +2.7 or +3.3Vdc supply. The VMEM uses an internal compensation scheme to improve temperature stability which produces temperature performance equivalent to quartz based products. Features • • • • • • • • • Silicon Resonator High Shock Survivability +1.8V, +2.5V, +2.7V or +3.3V Operation CMOS Output Output Frequencies to 150 MHz Enable/Disable for Board Test and Debug -20/70°C or –40/85°C Operating Temperature Industry Standard 5.0 x 3.2, 3.2 x 2.5 or 2.5 x 2.0 SMD Footprints Product is Compliant to RoHS Directive and Fully Compatible with Lead Free Assembly • • • • Applications Smart Munitions Projectile Electronics Missiles High Shock & Vibration Applications Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Page1 Performance Specifications Specifications Table 1. Electrical Performance Parameter Frequency Stability (ordering option) Operating Temperature (ordering option) Operating Supply Voltage (ordering option) 1 Symbol fO Δ f/fo TOP VDD Min 1.000 Typical ±25, ±50, ±100 -20/70 or -40/85 Maximum 150.000 Units MHz ppm °C 1.65 2.3 2.45 3.0 1.8 2.5 2.7 3.3 3 4 5 6 1.95 2.7 2.95 3.6 6 8 10 12 1 V V V V mA mA mA mA uA V V pf ns ns % ps ps Supply Current, Output Enabled 1 to 40MHz 40.01 to 80MHz 80.01 to 125MHz 125.01 to 150MHz Supply Current, Output Disabled Output Logic Levels Output Logic High2 Output Logic Low2 Output Load Output Rise/Fall Time2 Duty Cycle3 Period Jitter , RMS, 80MHz Output Peak to Peak Start-up Time Enable/Disable Output Enabled Output Disabled 1] 2] 3] 4] 5] 5 4 IDD IDD VOH VOL tR tF SYM 9 75 tSU VIH VIL 0.75*VDD 3 0.8*VDD 0.2*VDD 15 1.3 1.3 3 3 45/55 10 ms V V 0.25*VDD A 0.01uF and a 0.1uF capacitor should be located as close to the supply as possible (to ground) is recommended. Figure 2 defines these parameters. Figure 1 illustrates the operating conditions under which these parameters are tested and specified. Duty Cycle is measured defined as On Time/Period. Measured using a Wavecrest SIA3300C, 90K samples Output will be active if Enable/Disable is left open. Description IDD 4 + VDD .1μF IC VC 1 + Period 3 2 15pF VOH 50% VOL On Time tR tF Fig 1: Test Circuit Fig 2: Output Waveform Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Page2 Table 2. Absolute Maximum Ratings Parameter Power Supply CMOS Input Voltage Junction Temperature Storage Temperature Soldering Temperature / Duration Symbol VDD E/D TJ TSTR TPEAK / tP Ratings -0.3 to +4.0 -0.3 to (VDD +0.3) 150 -62 to 125 260 / 40 Unit V V °C °C °C / sec Enable/Disable Functional Description Under normal operation the E/D is set to a logic high state or logic low state. When E/D is set to a logic low, the oscillator stops and the output is in a high impedance state. This helps reduce power consumption as well as facilitating board testing and troubleshooting. When E/D is set to a logic high state, the oscillator produces an output. Leaving the Enable/Disable pin open results in an active state with an output frequency. Outline Drawing, 5.0x3.2 option Suggested Pad Layout Units: mm (inches) Contact Pads are gold flash over palladium over nickel Figure 3, 5.0x3.2 Package drawing Table 3. Pin Out Pin 1 2 3 4 Symbol E/D GND fO VDD Function Enable/Disable Electrical Ground Output Frequency Supply Voltage Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Page3 Outline Drawing, 3.2x2.5 option Suggested Pad Layout Units: mm (inches) Contact Pads are gold flash over pallladium over nickel Figure 4, 3.2x2.5 Package drawing Outline Drawing, 2.5x2.0 option Suggested Pad Layout Units: mm (inches) Contact Pads are gold flash over palladium over nickel Figure 5, 2.5x2.0 Package drawing Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Page4 Reliability The VMEMxQ qualification tests were performed per MIL-PRF-55310 & the following environmental tests Table 4. Environmental Compliance Parameter Mechanical Shock Mechanical Vibration Thermal Shock Ambient Pressure Operating Gross and Fine Leak Resistance to Solvents Salt Atmosphere Moisture Resistance Low Temperature Storage Life Conditions MIL-STD-202, Method 213, Condition F except 30,000g, 0.1 ms MIL-STD-883, Method 2007, Condition C, 100g MIL-STD-202, Method 107, Condition B MIL-STD-202, Method 105, Condition E MIL-STD-883, Method 1014, Condition A2 & C MIL-STD-202, Method 215 MIL-STD-883, Method 1009, Condition A MIL-STD-202, Method 106 JESD22-A119, Condition B Handling Precautions Although ESD protection circuitry has been designed into the the VMEMxQ, proper precautions should be taken when handling and mounting. VI employs a Human Body Model and a Charged-Device Model (CDM) for ESD susceptibility testing and design protection evaluation. ESD thresholds are dependent on the circuit parameters used to define the model. Table 5. ESD Ratings Model Human Body Model Charged Device Model Machine Model Minimum 2000V 500V 200 V Suggested IR Profile Devices are built using lead free epoxy and can also be subjected to standard lead free IR reflow conditions. Figure 6 shows max temperatures and lower temperatures can also be used e.g. peak temperature of 220C. Table 6. Reflow Profile Parameter PreHeat Time Ts-min Ts-max Ramp Up Time Above 217 °C Peak Temperature Time To Peak Temperature Time at Peak Temperature Ramp Down Symbol tS Value 60 sec Min, 260 sec Max 150°C 200°C 3 °C/sec Max 60 sec Min, 150 sec Max 255-260°C 480 sec Max 20 sec Max 6 °C/sec Max RUP tL tP T25C to Peak tP RDN Figure 6 Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Page5 Ordering Information Standard Frequencies (MHz) 2.000 9.216 17.000 29.4912 48.000 75.000 116.640 3.686 9.600 20.000 30.000 50.000 80.000 125.000 4.000 10.000 21.000 32.000 55.000 83.333 127.872 4.032 12.000 21.500 33.000 56.448 84.000 4.9152 12.500 22.000 33.333 58.320 95.000 5.000 12.729 23.000 36.000 60.000 100.000 6.000 14.31818 24.000 37.500 64.000 110.000 7.3728 14.746 25.000 40.000 66.000 112.500 7.680 16.000 26.000 42.500 66.666 114.000 8.000 16.128 27.000 45.000 72.000 115.200 Other Frequencies Available Upon Request. VMEMxQ - x 3 x - 25M0000000 Product Family Ruggedized MEM’s Oscillator Package Size 5: 5.0x3.2mm 3: 3.2x2.5mm 2: 2.5x2.0mm Frequency (See Above) In MHz Stability Options A: ±100ppm, -20 to 70°C B: ±50ppm, -20 to 70°C C: ±100ppm, -40 to 85°C D: ±50ppm, -40 to 85°C E: ±25ppm, -10 to 70°C F: ±25ppm, -40 to 85°C Electrical Options 3: Enable/Disable, 45/55% Duty Cycle Voltage Options B: +3.3Vdc J: +2.7Vdc G: +2.5Vdc H: +1.8Vdc Example: VMEM2Q-H3D-40M0000000 = 2.5x2.0, +1.8V, E/D, 45/55%, ±50ppm over -40/85°C with a 40.000MHz output 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: 03/26/2010 Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Page6