2264-005 Datasheet, PDF (1/2 Pages) List of Unclassifed Manufacturers – ANALOG ACCELEROMETER MODULE

SILICON DESIGNS, INC
P-Cap_TM Model 2264
ANALOG ACCELEROMETER MODULE
! Accurate, Easy-to-Use Alternative to
Piezoresistive Accelerometers
! Sensitivity Insensitive to Variations in Excitation
Voltage, Temperature and Cable Resistance
! Frequency Response Insensitive to Temperature
! 6 to 22V Excitation (dual or single supply)
! Differential Output Signal / EMI Resistant
! Capacitive Micromachined
! Nitrogen Damped to 0.7 (nominal)
! Sensitivity Accurate to 2% (typical)
! -40 to +85EC Operation
! Traditional Four Wire Connection
! Responds to DC and AC Accelerations
! Rugged Anodized Aluminum Module & PTFE Cable
! Serialized for Traceability
ORDERING INFORMATION
Full Scale
Acceleration
Model
Number
± 5g
± 10 g
± 25 g
2264-005
2264-010
2264-025
! Non-Standard g Ranges Available
! Other Output Sensitivities Available
± 50 g
±100 g
±200 g
2264-050
2264-100
2264-200
DESCRIPTION
The P-Cap_TM model 2264 accelerometer is a high performance and wide temperature range accelerometer intended
to directly replace piezoresistive units for existing and new applications. It uses a capacitive sensing element and
an advanced ASIC to simulate the operation of a piezoresistive bridge. It 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. Internal regulation is provided to eliminate the effects of excitation voltage variation. Unlike piezoresistive
elements, its sensitivity, bias and frequency response are insensitive to temperature changes or thermal gradients.
The cable’s shield is electrically connected to the case while the ground (GND) wire is isolated from the case. An
optional initial calibration sheet (2264-CAL) and periodic calibration checking are also available.
OPERATION
The P-Cap_TM model 2264 can be operated from supply voltages ranging from ±3 to ±11 VDC. It produces two analog
voltage outputs which vary with acceleration as shown in the graph on the next page. The sensitive axis is
perpendicular to the bottom of the package, with positive acceleration resulting from a force pushing on the bottom
of the package. The signal outputs are fully differential about a common mode voltage that is midway between the
two supply voltages which is 0 volts when equal plus and minus supplies are used. The output sensitivity or scale
factor is independent of changes in the excitation voltage. At zero acceleration, the output differential voltage is
nominally 0 volts DC; at ±full scale acceleration the output differential voltage is ±0.5 volts DC respectively. Single
supply operation is also possible by connecting -Exc to ground and +Exc to +6 to +22 VDC but the average value of
the +OUT and -OUT signals will be at ½ the supply voltage and each output will swing from ±0.25 volts around the ½
supply voltage level. Standard cable length is 1 meter.
APPLICATIONS
! CRASH TESTING
! VIBRATION MONITORING
! VIBRATION ANALYSIS
! MACHINE CONTROL
! MODAL ANALYSIS
! ROBOTICS
! FLIGHT TESTING
! MACHINERY INSTRUMENTATION
P-Cap is a trademark of Silicon Designs, Inc.
Silicon Designs, Inc. ! 1445-NW Mall Street, Issaquah, WA 98027-5344 ! Phone: [phone] ! Fax: [phone]
web site: www.silicondesigns.com
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Apr 07