Silicon Designs Model 2010 Digital Accel Module

Product catalog summary

Overview: The Silicon Designs Model 2010 is a digital accelerometer module designed for use with the Model 3020 G-LOGGERTM Acceleration Acquisition System. It features a micromachined capacitive sense element, a custom integrated circuit sense amplifier, and a sigma-delta A/D converter. The module is housed in a rugged anodized aluminum case and is suitable for commercial and industrial environments.

Specifications: The accelerometer operates within a temperature range of -55 to +125°C and requires a +5 VDC power supply with a typical consumption of 2 mA. It is compatible with TTL/CMOS and provides a digital pulse density output. The module is available in various g ranges from ±2g to ±200g.

Operation: The Model 2010 produces a digital pulse train where the pulse density is proportional to the applied acceleration. It requires a clock frequency between 100kHz and 1MHz, and the output is ratiometric to the clock frequency. The sensitive axis is perpendicular to the bottom of the package.

Signal Descriptions: The module uses a four-wire connection: +5V (red), GND (black), CLK (white), and CNT (green). The CLK input requires a 50% duty cycle square wave, and the CNT output provides a digital pulse stream proportional to acceleration.

Performance: The accelerometer's frequency response varies by model, with a nominal range from 0-400 Hz to 0-2000 Hz depending on the g range. Sensitivity and other performance parameters are specified at a clock frequency of 250kHz and a temperature of 25°C.

Absolute Maximum Ratings: The device can withstand an acceleration over-range of 2000g for 0.1 ms and has specific voltage limits for VDD and signal wires. Exceeding these ratings may cause permanent damage.

ESD Considerations: As a CMOS device, the Model 2010 is susceptible to electrostatic discharge. Diode protection is provided, but grounding precautions should be taken during handling.

Cable Length Considerations: The standard 1-meter cable can be extended up to 45 meters using a Model 3901 Adapter Cable and a Model 3320 G-LOGGERTM. Longer cables should be flat to minimize crosstalk.

Ordering Information: The module is available in several models, each with a different full-scale acceleration range, from ±2g to ±200g.

Catalog excerpts

Silicon Designs Model 2010 Digital Accel Module-1

Silicon Designs, Inc. ! 1445-NW Mall Street, Issaquah, WA 98027-5344 ! Phone: 425-391-8329 ! Fax: 425-391-0446 web site: www.silicondesigns.com [page 1] Sep 07 SILICON DESIGNS, INC Model 2010 DIGITAL ACCELEROMETER MODULE ! Capacitive Micromachined ! Nitrogen Damped ! Digital Pulse Density Output ! Low Power Consumption ! -55 to +125EC Operation ! Rugged Anodized Aluminum Module ! Four Wire Connection ! TTL/CMOS Compatible ! +5 VDC, 2 mA Power (typical) ! Easy Interface to Microprocessors or the model 3320 G-LOGGERTM ! Good EMI Resistance ! Responds to DC & AC Acceleration ! Non Standard g Ranges Available ! Serialized for Traceability DESCRIPTION The model 2010 single axis accelerometer module is designed to be used with the model 3020 G-LOGGERTM Acceleration Acquisition System. Up to three 2010's may be connected to a G-LOGGERTM using a model 3901 Cable Adapter. The 2010 contains a model 1010L accelerometer which features a micromachined capacitive sense element, a custom integrated circuit sense amplifier, and sigmadelta A/D converter. It provides a TTL/CMOS compatible output signal for measuring accelerations in commercial/industrial environments and is tailored for zero to medium frequency instrumentation applications. The anodized aluminum case is epoxy sealed and is easily mounted via two #4 (or M3) screws. It is relatively insensitive to temperature changes and gradients. An optional calibration sheet (2010-CAL) and periodic calibration checking are available. OPERATION The model 2010 accelerometer produces a digital pulse train in which the density of pulses (number of pulses per second) is proportional to applied acceleration. It requires a single +5VDC power supply and a TTL/CMOS level clock of 100kHz-1MHz. The output is ratiometric to the clock frequency and independent of the power supply voltage. The sensitive axis is perpendicular to the bottom of the package, with positive acceleration defined as a force pushing on the bottom of the package. External digital line drivers can be used to drive long cables or when used in an electrically noisy environment. SIGNALS +5V: DC Power (red wire) GND: Ground. (black wire, isolated from aluminum case) SHIELD: Cable shield electrically connected to aluminum case. CLK: Input reference clock; 100Khz-1MHz (white wire). CNT: Count (digital pulse stream) output (green wire) ORDERING INFORMATION Full Scale Acceleration Model Number ± 2 g 2010-002 ± 5 g 2010-005 ± 10 g 2010-010 ± 25 g 2010-025 ± 50 g 2010-050 ± 100 g 2010-100 ± 200 g 2010-200

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Silicon Designs Model 2010 Digital Accel Module-2

Silicon Designs, Inc. ! 1445-NW Mall Street, Issaquah, WA 98027-5344 ! Phone: 425-391-8329 ! Fax: 425-391-0446 web site: www.silicondesigns.com [page 2] Sep 07 Model 2010 Digital Accelerometer Module ABSOLUTE MAXIMUM RATINGS * Operating Temperature (Case & Cable) . . . . -55 to +125EC Operating Temperature (Connector) . . . . . . . -40 to +65EC Storage Temperature . . . . . . . . . . . . . . . . . . . -40 to +65EC Acceleration Over-range . . . . . . . . . . . . . . 2000g for 0.1 ms Voltage on VDD to GND . . . . . . . . . . . . . . . . . . -0.5V to 6.5V Voltage on CNT or CLK to GND 1 . . . . ....

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Silicon Designs Model 2010 Digital Accel Module-3

Silicon Designs, Inc. ! 1445-NW Mall Street, Issaquah, WA 98027-5344 ! Phone: 425-391-8329 ! Fax: 425-391-0446 web site: www.silicondesigns.com [page 3] Sep 07 Where: ) 1 g full scale acceleration in g' s sample rate in Hertz accelerometer clock rate in Hertz pulse rate in pulses / sec acceleration in gravity units 9.807 m / s 2 or 32.175ft / s 2 g f f f g SPAN SR CLK CNT FORCE = = = = = = 2 *( CNT CNT Quantization (g' s) = = + = - g • f f f f g g g g f f SPAN SR CLK CNT CLK FORCE SPAN FORCE SPAN CNT CLK 1 2 1 2 Model 2010 Digital Accelerometer Module SIGNAL DESCRIPTIONS CLK (input): Reference...

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