SPECIALTY +5V DC MODELS 2012 & 2422
LOW VOLTAGE MEMS DC ACCELEROMETERS••••••••••Low Noise: 10 μg√ Hz Typical for ±2g Full Scale Versions-55 to +125°C Operating Temperature Range+5 VDC Power for Low Voltage Power Supply Systems
Excellent Long-Term Stability±4V Differential Output or 0.5V to 4.5V Single Ended Output
Responds to frequencies from zero (DC) to 2000+ Hz
Integrated 3’ Shielded Cable
Simple Four (4) or Eight (8) Wire Connections
Rugged Anodized Aluminum Case
Fully Calibrated and Serialized for TraceabilityAVAILABLE G-RANGESFULL SCALE
ACCELERATION±2g±5g± 10 g± 25 g± 50 g± 100 g± 200 g± 400 g

MODELSUFFIX-002-005-010-025-050-100-200-400

SPECIALTY +5V DC LOW VOLTAGE ACCELEROMETER MODELS 2012 & 2422
SDI’s Models 2012 and 2422 Low Cost Single-Axis and Triaxial MEMS DC Accelerometers
are rugged plug-and-play measurement devices suitable for a wide array of demanding
applications. Both models only require a steady +5 V DC Power Supply to support
industrial-grade sensing on acquisition systems with limited power supply options.
The 2012 and 2422 feature an integrated 3’ cable, and both models feature one (1) or three(3) hermetically sealed, low noise SDI surface mount accelerometers, which areindividually tested, programmed, and calibrated by SDI.
The 2012 and 2422 are relatively insensitive to temperature changes and gradients
between -55 and +125°C. The cable’s shield is electrically connected to the casewhile the ground (GND) wire is isolated from the case. The robust, anodized
aluminum case is epoxy sealed and can be mounted easily via two screws, anadhesive, or by attaching a magnet.

ZERO (DC) TO MEDIUM FREQUENCY APPLICATIONSPERFORMANCE BY G RANGE*FREQUENCYRESPONSE(TYPICAL, 3 DB)*FREQUENCYRESPONSE(MINIMUM, 3 DB)

OUTPUT NOISE,DIFFERENTIAL(RMS, TYPICAL)MAX.
MECHANICALSHOCK (0.1 MS)Hz
0 – 300μg/(root Hz)
10g (peak)

INPUT
RANGE

SENSITIVITY,DIFFERENTIAL*FREQUENCYRESPONSE(TYPICAL, 5%)g±2mV/g2000

Hz0 – 250

Hz
0 – 525±5800
0 – 400±104000 – 700±25160
0 – 1300±5080
0 – 1600±100400 – 1700
±200200 – 1900±400
100 – 2000
By Model: VDD=VR=5.0 VDC, TC=25°C

0 – 800
0 – 1100
0 – 1750
0 – 2100
0 – 30000 – 3600
0 – 4200

2000
0 – 420
150 – 660
230 – 1050
380 – 1400
60
5000
0 – 1700
121
0 – 2100
243
0 – 2400475
Single ended sensitivity is half of values shown.

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]7-January-2022

+5V MODELS 2012 & 2422 LOW VOLTAGE ACCELEROMETERSPERFORMANCE - ALL VERSIONSAll Models: Unless otherwise specified, Vs=+8 to +32 VDC, TC=25°C, Differential Mode. Span = ±g range = 8000 mV.
PARAMETERMINTYPMAXUNITS
Bias Calibration Error (%)
0.25
0.6± % of span
Bias Calibration Error (mV)
2560± mV
Scale Factor Calibration Error 1
0.5
1.25±%
Non-Linearity (-90 to +90% of span) 1
0.15
0.5± % of span
Bias Temperature Shift (Coefficient)-2000+200(PPM of span)/°C
Scale Factor Temperature Shift (Coefficient)-2000+200
PPM/°C
Cross Axis Sensitivity
23±%
Power Supply Rejection Ratio
25dB
Operating Temperature-55+125°C
Output Impedance (2012/2422)
90/1ΩOutput Common Mode Voltage
2.5VDCOperating Voltage
4.75
5.0
5.25
VDC
Operating Current (AOP & AON open, 2012/2422)
8/21
10/30
mA DC
Mass 2012/2422
8/21
grams
Cable Mass (3’ integrated cable, 2012/2422)
14/25
grams/meter
Note 1: For 2g thru 50g only; 100g and greater versions are tested and specified from -65 to +65g.
NOTICE: Stresses greater than those listed may cause permanent damage to the device. These are maximum stress ratings
only. Functional operation of the device at or above these conditions is not implied.

OPERATION
SDI Models 2012 & 2422 MEMS MEMS DC Accelerometers provide optimal performance when they are connected
to instrumentation in a differential configuration using both the AOP and AON output signals, but they also support
single ended operation for complete flexibility.
These Accelerometers produce differential analog output voltage pairs (AON & AOP) which vary with acceleration.
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+5 volts.
When a differential connection is not possible, SDI recommends connecting the accelerometer to instrumentationin single ended mode by connecting AOP and GND to the instrumentation and leaving AON disconnected. Keep inmind that the signal to noise ratio is reduced by half for a single-ended vs. a differential connection.

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]7-January-2022

+5V MODELS 2012 & 2422 LOW VOLTAGE ACCELEROMETERS
CABLE SPECIFICATIONS
Model 2012: The standard 3’ 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 anominal outer diameter of 0.096”. The cable’s braided shield is electrically connected to the case. The black ground(GND) wire is isolated from the case.
Model 2422: The SDI 2422 has an integrated 1-meter (approx. 3 feet) cable with strain relief attached at theconnection to the case and consists of seven 28 AWG (7x36) and one 26 AWG (7x34) tin-plated copper wires. Theseven smaller 28 AWG wires are covered by 5.5 mils of Teflon FEP insulation. The large single 26 AWG wire iscovered by 8.5 mils of black Teflon FEP insulation. The seven smaller gauge wires surround the single larger
gauge (black) wire. The cable’s braided shield is electrically connected to the case. The black ground (GND) wire
is isolated from the case. The wire bundle is surrounded by a braided shield and covered by a 10 mil thick Teflon
FEP jacket with a nominal outer diameter of 0.136”.

CABLE LENGTH CONSIDERATIONSExtending the cable length is possible but not recommended on Models 2012 and 2422 due to the limited voltage.

MODEL 2012 PACKAGE DIMENSIONS
1.00 [25.4]

0.10 [2.5]0.825 [20.95]
39 [1000]

6 ,/ , &2 1'( 6 , * 16   [ [ [ 9 2 1/<

1.00 [25.4]

0.50 [12.7]

0.21 [5.3]0.125 [3.2] DIA
0.45 [11.4]
0.30 [7.6]
PositiveAcceleration
0.12 [3.0]

XXXXX
Serial #(ACTUAL SIZE)

0.20 [5.1]
INCH [mm]= Location of Sense Element



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]7-January-2022

+5V MODELS 2012 & 2422 LOW VOLTAGE ACCELEROMETERS
MODEL 2422 PACKAGE DIMENSIONSFor serial num bers:>@>@>@',$>@>@>@9'&21/<

A(X)
B(X)
C(X)
A(Y)
B(Y)
C(Y)
A(Z)
B(Z)
C(Z)

>@6 ,/,&21' (6 , * 1 62422-XXX
YX

6(5,$/>@after 3 0 0 00 .5 80 .1 30 .5 50 .1 30 .6 00 .5 50 .3 70 .6 00 .1 8up to 3 0 0 00 .6 10 .1 60 .5 90 .1 60 .5 90 .5 90 .5 40 .6 40 .2 2

XXXX
Z
X

Inch [mm]A(Z)>@dim ensions in inches+5V ONLY
SILICON
DESIGNS2422-nnn
YX

Y
X

C(X)

C(Y)

B(Z)

C(Z)

Z

XXXX

Z

A(Y)
A(X)

Z
X

B(X)
B(Y)

OPTIONAL ACCESSORIESModel 2230 Triaxial Mounting Block• Anodized 6061-T6
aluminum 1.25"
cube• Mix and Match glevels for custom
combinations

Model 2232 Magnetic Mount• 10 lbs / 4.6 KG pull force• Rated for use up to +/-50G• Low mass: 23 grams

Model 2235 Stud Mount Adaptor Block• Stud mount Adaptor for any SDI
module• Anodized 6061-T6
aluminum block• 6.2 grams, 0.7” x 1”
footprint

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 4]7-January-2022

+5V MODELS 2012 & 2422 LOW VOLTAGE ACCELEROMETERS
RECOMMENDED CONNECTIONS - DIFFERENTIAL
SDI Models 2012 & 2422 MEMS Variable Capacitive Accelerometers provide optimal performance when they areconnected to instrumentation in a differential configuration using both the AOP and AON output signals.

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 5]7-January-2022

+5V MODELS 2012 & 2422 LOW VOLTAGE ACCELEROMETERS

RECOMMENDED CONNECTIONS – SINGLE ENDEDSingle ended operation is also possible with minor changes to the wiring configuration, as described below.

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 6]

7-January-2022

+5V MODELS 2012 & 2422 LOW VOLTAGE ACCELEROMETERS

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 7]

7-January-2022

+5V MODELS 2012 & 2422 LOW VOLTAGE ACCELEROMETERSCALIBRATION REPORT EXAMPLESLINEARITY, PHASE & FREQUENCY RESPONSE BY G-LEVELThe optional calibration reports provide additional information about the linearity, output, phase, and frequency
response as tested for each individual unit. The following are examples of the graphical data supplied on the ThreeAxis Model 2422 calibration reports, by G-level. The Single-Axis Model 2012’s reports are similar but only display
one (1) channel in the charts.

EXAMPLE 2G in 3-AXIS

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
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www.silicondesigns.com[page 8]

7-January-2022

+5V MODELS 2012 & 2422 LOW VOLTAGE ACCELEROMETERS
EXAMPLE 5G in 3-AXIS

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 9]7-January-2022

+5V MODELS 2012 & 2422 LOW VOLTAGE ACCELEROMETERS
EXAMPLE 10G in 3-AXIS

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 10]7-January-2022

+5V MODELS 2012 & 2422 LOW VOLTAGE ACCELEROMETERS
EXAMPLE 25G in 3-AXIS

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 11]7-January-2022

+5V MODELS 2012 & 2422 LOW VOLTAGE ACCELEROMETERS
EXAMPLE 50G in 3-AXIS

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 12]7-January-2022

+5V MODELS 2012 & 2422 LOW VOLTAGE ACCELEROMETERS
EXAMPLE 100G in 3-AXIS

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 13]7-January-2022+5V MODELS 2012 & 2422 LOW VOLTAGE ACCELEROMETERS
EXAMPLE 200G in 3-AXIS

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+5V MODELS 2012 & 2422 LOW VOLTAGE ACCELEROMETERS
EXAMPLE 400G in 3-AXIS

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7-January-2022