Silicon Designs Model 2420 Triaxial Digital Accel Module, Pulse Density Output, +5 VDC Power, 9-Pin D-Subminiature Connector0 pages

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
ORDERING INFORMATION
Full Scale
Acceleration
Model
Number
± 2 g 2420-002
± 5 g 2420-005
± 10 g 2420-010
± 25 g 2420-025
± 50 g 2420-050
± 100 g 2420-100
±200 g 2420-200
SILICON DESIGNS, INC Model 2420
TRIAXIAL DIGITAL ACCELEROMETER MODULE
! 3 Axis Acceleration Sensing
! Capacitive Micromachined
! Nitrogen Damped
! Use with model 3320 G-LOGGERTM or
Interface to your Microprocessor
! Digital Pulse Density Outputs
! Fully Calibrated
! Low Power Consumption
! -55 to +125EC Operation
! +5 V DC Power
! Serialized for Traceability
! Good EMI Resistance
! Responds to DC & AC Acceleration
! TTL / CMOS Compatible
! Non Standard Ranges Available
! Rugged Anodized Aluminum Module
! D-Sub, 9-Pin (4 signal+2 Power) Connection
DESCRIPTION
The Model 2420 triaxial accelerometer module is meant to be used with the model
3320 G-LOGGERTM Acceleration Acquisition System. The 2420 contains three
orthogonally mounted model 1010 accelerometers which feature a
micromachined capacitive sense element, a custom integrated circuit sense
amplifier and sigma-delta 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 #8 (or
M4) screws. It is relatively insensitive to temperature changes and gradients. An
optional calibration sheet (2420-CAL) and periodic calibration checking are also
available.
OPERATION
The Model 2420 produces three digital pulse train outputs in which the density of pulses (number of pulses per
second) is proportional to applied acceleration. It operates from a single +5 volt power supply and a 100kHz to 1MHz,
TTL/CMOS compatible, clock. Each of the three outputs are ratiometric to the clock frequency and independent of
the power supply voltage. The "Z" axis is perpendicular to the bottom of the package, with positive acceleration
defined as a force pushing on the bottom of the package. The "X" and "Y" axis directions are marked on the cover
with positive acceleration defined as acceleration in the direction of the axis arrow. External digital line drivers can
be used to drive long cables or when used in an electrically noisy environment.
SIGNALS
+5V: (pin 5) DC Power . . . . . . . . . . . . . . (reddish brown wire)
GND: (pins 6-9) Ground . . . . . . . . . . . . . . . . . . . . . . . . (black wire)
CLK: (pin 1) Input reference clock; 100Khz-1MHz . (white wire)
CNTX: (pin 2) X-Axis count output . . . . . . . . . . . . . . (green wire)
CNTY: (pin 4) Y-Axis count output . . . . . . . . . . (light brown wire)
CNTZ: (pin 3) Z-Axis count output . . . . . . . . . . . . (light blue wire)