MODEL 2290
PRECISION REFERENCE ACCELEROMETER••••••••••

Excellent Long-Term Stability
Flexible +8 to +32 VDC Power±4V Differential Output-55 to +125°C Operating Temperature Range
Responds to Frequencies from Zero (DC) to 2000+ Hz
Low Impedance Outputs Support up to 2000 Feet of Cable
Integrated Cable, Traditional 1” square Size
Integrated 10’ Cable with Simple 4-Wire Connection
Rugged Anodized Aluminum Case, Module Mass: 9 Grams
Fully Calibrated and Serialized for Traceability

AVAILABLE G-RANGESFULL SCALE
ACCELERATION±5g± 10 g± 25 g± 50 g

MODELSUFFIX-005-010-025-050

The SDI Model 2290 Precision Reference Single Axis MEMS Variable
Capacitive Accelerometer is a rugged, plug-and-play measurement
device designed for zero-to-medium frequency applications thatdemand highly precise and reliable, accurate measurements. Itfeatures SDI’s hermetically sealed, low noise, Model 1527 Inertial
MEMS accelerometer for extra-low noise performance and inertialgrade stability. The rugged, anodized aluminum, 1” x 1” square
package provides all the durability and reliability of SDI’s industrial
accelerometers with the convenience of a 4-wire pigtail for use withalmost any DAQ system.
The 2290 is relatively insensitive to temperature changes and gradients. Onboard voltage regulation and aninternal voltage reference eliminate the need for precision power supplies. The anodized aluminum case isepoxy sealed and is easily mounted via two screws, an adhesive, or by attaching a magnet. The
accelerometer is non-ferrous and will not respond to magnetic mounting. An initial calibration certificate
is provided with each unit.
The 2290 is REACH and RoHS compliant; it is ECCN 7A994 and is not ITAR controlled.

ZERO (DC) TO MEDIUM FREQUENCY APPLICATIONSPERFORMANCE BY G RANGEINPUTRANGESENSITIVITY,DIFFERENTIAL*FREQUENCYRESPONSE(TYPICAL, 5%)*FREQUENCYRESPONSE(TYPICAL, 3 DB)*FREQUENCYRESPONSE(MINIMUM, 3 DB)

OUTPUT NOISE,DIFFERENTIAL(RMS, TYPICAL)MAX.
MECHANICALSHOCK (0.1 MS)

gmV/g

HzHz

Hzµg/(root Hz)

g (peak)

0 – 700
0 – 10000 – 1500
0 – 1800

0 – 400
0 – 600
0 – 1100
0 – 1300

152338602000±5±10±25±50

800
0 – 500
400
0 – 700
1600 – 1200
800 – 1500
By Model: VDD=VR=5.0 VDC, TC=25°C

5000

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
Silicon Designs, Inc. • 13905 NE 128th Street, Kirkland WA 98034 • Phone: 425-391-8329 • Fax: 425-391-0446
www.silicondesigns.com[page 1]

1-Oct-2021

MODEL 2290 PRECISION REFERENCE ACCELEROMETEROPERATION
These accelerometer modules produce differential analog output voltage pairs (AON & AOP) which vary withacceleration. The signal outputs are fully differential about a common mode voltage of approximately 2.5 volts. At zeroacceleration, the output differential voltage is nominally 0 volts DC; at ±full scale acceleration, the output is ±4 volts
DC, respectively, as shown in the figure (below). The output scale factor is independent from the supply voltage of +8
to +32 volts.

SPECIFICATIONSPARAMETER
Bias Calibration Error (%)
Bias Calibration Error (mV)Bias Temperature Shift (Coefficient)
Scale Factor Calibration Error
Scale Factor Temperature Shift (Coefficient)
Non-Linearity (-90 to +90% of span)
Cross Axis Sensitivity
Power Supply Rejection Ratio
Output ImpedanceOutput Common Mode Voltage
Operating Current (AOP & AON open)
Mass (Excluding Cable)
Unless otherwise specified, TC=25°C, Differential Mode.
Max Case Operating Temperature
Max Storage Temperature-55 to +125°C-55 to +125°C

MIN

TYP
MAX
0.25
0.6
2048-75
0+75
0.5
1.25-75
0+50
0.15
0.5
2350>6512.5
710.5
9Span = ±g range = 8000 mV.

UNITS± % of span
± mV
(PPM of span)/°C±%
PPM/°C± % of span±%dBΩ
VDCmA DCGrams

Max Operating Voltage
Max. Mechanical Shock (0.1 MS)+8 to +32 VDC
5000g

NOTICE: Minimize exposure above 125°C for maximum lifespan. Stresses greater than those listed above may cause permanentdamage to the device. These are maximum stress ratings only. Functional operation of the device at or above these conditions isnot implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability and lifespan.

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
Silicon Designs, Inc. • 13905 NE 128th Street, Kirkland WA 98034 • Phone: 425-391-8329 • Fax: 425-391-0446
www.silicondesigns.com[page 2]1-Oct-2021

MODEL 2290 PRECISION REFERENCE ACCELEROMETERPACKAGE DIMENSIONSCABLE SPECIFICATIONS & CONNECTIONSThe standard 10-foot (approximately 3m) integrated cable consists of four 28 AWG (7x36) tin-plated
copper wires with Teflon FEP insulation surrounded by a 40 AWG tin plated copper braided shield. The
shield jacket is Teflon FEP with a nominal outer diameter of 0.096”. The cable’s braided shield iselectrically connected to the case. The black ground (GND) wire is isolated from the case. The cable ends
in a 4-wire pigtail.
SDI Model 2290 MEMS Precision Reference Accelerometers provide optimal performance when they areconnected to instrumentation in a differential configuration using both the AOP and AON output signals.

WIRE
VS: red wire
GND: black wire

SIGNALPowerGround

WIRE
AOP: (Output) green wire
AON: (Output) white wire

SIGNAL
Positive output
Negative output

CABLE LENGTH CONSIDERATIONS
Cable lengths of up to 50 feet (15 meters) can be used without the need to test for output instability. For cable lengths
exceeding 50 feet, SD recommends checking each individual installation for oscillation by tapping the accelerometer
and watching the differential output for oscillation in the 20 kHz to 50 kHz region. If no oscillation is present, extended
cable length should behave as expected. From the standpoint of output current drive and slew rate limitations, all SDI
8-32 VDC Accelerometers are capable of driving over 2000 feet (600 meters) of cable. However, at some length ranging
between 50 feet and 2000 feet, each device will likely begin to exhibit oscillation.
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
Silicon Designs, Inc. • 13905 NE 128th Street, Kirkland WA 98034 • Phone: 425-391-8329 • Fax: 425-391-0446
www.silicondesigns.com[page 3]1-Oct-2021