MODELS 2210, 2260 AND 2266
UNIVERSAL 1-AXIS DC ACCELEROMETERS•••••••••••Low Noise: 10 μg√ Hz Typical for ±2g Full Scale Versions-55 to +125°C Operating Temperature Range
Flexible +8 to +32 VDC Power
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
Low Impedance Outputs Support up to 2000 Feet of Cable
Integrated Cable or Connector, Traditional 1” & Small Footprint Sizes
Simple Four (4) Wire Connection
Rugged Anodized Aluminum Case
Fully Calibrated and Serialized for Traceability

AVAILABLE 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

UNIVERSAL ACCELEROMETER MODELS 2210, 2260, AND 2266
SDI’s Models 2210, 2260, and 2266 Low Cost Single-Axis MEMS Variable
Capacitive Accelerometers are rugged plug-and-play measurement devices forsuitable for a wide array of demanding applications. All three models excel inzero-to-medium frequency commercial and industrial applications, particularly
where reliable performance, extremely low noise, and long-term stability are
absolute requirements.
The 2210 comes in a traditional 1-inch square package and the 2260 and 2266 are the small footprint
devices designed for tight spaces. The 2210 and 2260 feature an integrated 3’ cable, while the 2266’sconnector allows for customized cable lengths and easy repositioning. All three models feature ahermetically sealed, low noise SDI surface mount accelerometer, which is individually tested,programmed, calibrated by SDI.
Onboard voltage regulation and an internal voltage reference eliminate the need for precision power supplies. Therobust, anodized aluminum case is potted then epoxy sealed and can be mounted easily via two screws, an adhesive,
or by attaching a magnet.

ZERO (DC) TO MEDIUM FREQUENCY APPLICATIONSPERFORMANCE BY G RANGE
INPUT
RANGE

SENSITIVITY,DIFFERENTIAL*FREQUENCYRESPONSE(TYPICAL, 5%)

gmV/g
Hz±2
2000
0 – 250±5800
0 – 400±104000 – 700±251600 – 1300
±50800 – 1600
±100400 – 1700
±200200 – 1900
±400
100 – 2000
By Model: VDD=VR=5.0 VDC, TC=25°C*FREQUENCYRESPONSE(TYPICAL, 3 DB)

Hz0 – 525
0 – 800
0 – 1100
0 – 1750
0 – 2100
0 – 30000 – 3600
0 – 4200*FREQUENCYRESPONSE(MINIMUM, 3 DB)

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

Hzμg/(root Hz)
g (peak)0 – 300
1020000 – 420
150 – 660
230 – 1050
38
0 – 1400
60
5000
0 – 1700
121
0 – 2100
243
0 – 2400475
Single ended sensitivity is half of values shown.

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UNIVERSAL 2210, 2260, AND 2266 1-AXIS ACCELEROMETERSPERFORMANCE - ALL VERSIONSAll Models: Unless otherwise specified, Vs=+8 to +32 VDC, TC=25°C, Differential Mode. Span = ±g range = 8000 mV.
PARAMETERMIN
TYPMAXUNITS
Bias Calibration Error (%)
0.25
0.6± % of span
Bias Calibration Error (mV)
2560± mV
Scale Factor Calibration Error 10.51.25±%
Non-Linearity (-90 to +90% of span) 10.15
0.5± % of span
Bias Temperature Shift (Coefficient)-2000+200(PPM of span)/°C
Scale Factor Temperature Shift (Coefficient)-2000+200PPM/°C
Cross Axis Sensitivity
23±%
Power Supply Rejection Ratio
50>65dB
Output Impedance1ΩOutput Common Mode Voltage
2.5VDCOperating Voltage
832
VDC
Operating Current (AOP & AON open)
710.5mA DC
Operating Temperature-55+125°C
Mass 2210 / 2260 / 2266 (not including cable)
10 / 6 / 9grams
Cable Mass (3’ integrated cable, 2210, 2260)
14grams/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.

BIAS & SCALE FACTOR TEMPERATURE SHIFT EXPLAINEDEvery accelerometer has a bias and scale factor temperature coefficient, meaning the output shifts slightly due totemperature changes. Many applications operate within a relatively small temperature band or at room
temperature, and therefore rarely encounter interference from the bias or scale factor temperature shifts. Thesecustomers are ideal candidates for SDI’s standard accelerometer modules 2210, 2260, and 2266.
For applications experiencing larger temperature variations (i.e. exposure to engine temperatures or arctic testing)
SDI suggests its Premium High-Performance accelerometer modules, the 2220 and 2276. These contain enhanced,
temperature compensated, proprietary SDI Model 1522 accelerometer chips, which are individually tested,calibrated and verified in a climate chamber and come with an initial calibration certificate.
The accelerometer output with no acceleration present. For SDI’s differential output analog
accelerometers, it is a signed quantity that is expressed in terms of either g or output volts and is ideallyequal to zero g or zero volts.
The ratio of the change in output to a unit change in the input acceleration expressed in millivolts per g(mV/g). Since the output of most accelerometers is slightly non-linear, the scale factor value is defined
Scale Factor
as the slope of the least-squares-fit line to the acceleration input vs output curve. SDI measures over
the range of -90% to +90% of full scale or from -65g to +65g, whichever is smaller.
The amount of bias shift to expect with a change in temperature expressed as PPM of span per °C. For
Biasexample, the percent of span bias shift that would occur for a 25g full scale device with a +/-200 PPM
Temperatureof span per °C rating and a 55 °C rise from room temperature would be: +/-200 / 1,000,000 x (80C - 25C)
Shiftx 100% of span = +/-1.1% of span. The g shift would be +/-1.1% of 50g = 0.55 g. This error in terms of(Coefficient)
output voltage for a 25 g analog accelerometer would be +/-1.1% of span = +/-1.1% of 8 V = 88 mV.
The amount of scale factor shift to expect with a change in temperature expressed as PPM per °C. For
Scale Factor
example, the percent shift in scale factor that would occur for a device with a +200 PPM per °C rating
Temperature
and a 60 °C rise from room temperature would be: +200 / 1,000,000 x (85C - 25C) x 100% = +1.2%. For
Shiftan analog 10g device, the scale factor would rise from its nominal (8 V)/(20 g) = 400 mV/g at +25C to 400(Coefficient)mV/g +1.2% = 404.8 mV/g.

Bias

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UNIVERSAL 2210, 2260, AND 2266 1-AXIS ACCELEROMETERSOPERATION
SDI Models 2210, 2260, and 2266 MEMS Variable Capacitive 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+8 to +32 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.

CABLE SPECIFICATIONS
2210, 2260: 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 a nominal 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.
2266: The case’s integrated connector
shells, pins and sockets are gold plated
brass. The 4PIN-CAB cable consists offour 30 AWG (7x38) silver-plated copper
wires with PTFE insulation surrounded bya braided shield. The black FEP shieldjacket has a nominal outer diameter of0.100”.
The 4PIN-CAB is available in fivestandard lengths, and custom lengths
may be available for special order.
Both cable styles end in a 4-wire pigtail.

NAME
4PIN-CAB-04
4PIN-CAB-10
4PIN-CAB-20
4PIN-CAB-33
4PIN-CAB-50

LENGTH - FEET
4 Feet10 Feet20 Feet33 Feet50 FeetLENGTH - METERS (APPROXIMATE)
1.2 Meters
3.0 Meters
6.0 Meters
10 Meters
15.4 Meters

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UNIVERSAL 2210, 2260, AND 2266 1-AXIS ACCELEROMETERS
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, Silicon Designs recommends checking each individual installation for oscillation bytapping 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 Universal 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.

RECOMMENDED CONNECTIONS - DIFFERENTIAL
SDI Models 2210, 2260, and 2266 MEMS Variable Capacitive Accelerometers provide optimal performance when
they are connected to instrumentation in a differential configuration using both the AOP and AON output signals.

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UNIVERSAL 2210, 2260, AND 2266 1-AXIS ACCELEROMETERS

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

COMPARABLE 3-AXIS MODELS
SDI’s universal single axis accelerometers are also built in three-axis
configurations for multi-dimensional sensing in one package with only asingle excitation connection. The SDI Models 2460 and 2466 are the threeaxis versions of the 2210, 2260 and 2266, using the same hermeticallysealed, low noise SDI surface mount accelerometers. The 2460 includes
a 3-foot integrated cable and is internally identical to the 2466, whichfeatures a connector for easily customized cable lengths and positions.

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

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

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UNIVERSAL 2210, 2260, AND 2266 1-AXIS ACCELEROMETERS
PACKAGE DIMENSIONS
1.00 [25.4]

0.10 [2.5]0.63 [16.0]0.48 [12.2]

INCH [mm]0.825 [20.95]

0.315 [8.0]

39 [1000]

Serial #0.12 [3.0]6, / ,&2 1'( 6 ,* 16SD I    [ [ [1.00 [ 25.4]

1.00 [25.4]
0.50 [12.7]

0.22 [5.6]0.65 [16.5]

    ;;;0.125 [3.2] DIA
0.44 [11.2]
0.30 [7.6]9'&0.46 [11.68]

XXXXX
Serial #0.20 [5.1]= Location of Sense Element

INCH [mm]0.12 [3.0].020 [5.1]= Location of Sense Element

2210

2260

Module Mass: 10 grams
Cable Mass: 14 grams/meter

Module Mass: 8 grams
Cable Mass: 14 grams/meter
0.63 [16.0]
0.48 [12.2]
0.315 [8.0]

INCH [mm]0.12[3.0]9'&;;;;;

Serial #Positive
Acceleration

0.125[ 3.2]

39 [1000]
0.30 [7.6]

Positive
Acceleration

SD I
0.94
[23.9]

0.59[15.0]

    

0.40 [10.16]

0.33 [8.4]
GRN

Positive
Acceleration

BLK= Location ofSense Element

WHT

0.425 [10.8]
RED

Note: Connector index may not be positioned as drawn

2266
Module Mass: 9 grams

Data sheets dated 1-November-2015 and newer apply to 2210’s with serial numbers above 23532, 2260’s with
serial numbers above 3870, and 2266’s with serial numbers above 1000.
Contact SDI for data sheets pertaining to parts made prior to these.
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25-Aug-2020

UNIVERSAL 2210, 2260, AND 2266 1-AXIS 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 thecalibration reports, by G-level.

EXAMPLE 2G

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UNIVERSAL 2210, 2260, AND 2266 1-AXIS ACCELEROMETERS
EXAMPLE 5G

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UNIVERSAL 2210, 2260, AND 2266 1-AXIS ACCELEROMETERS
EXAMPLE 10G

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UNIVERSAL 2210, 2260, AND 2266 1-AXIS ACCELEROMETERS
EXAMPLE 25G

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UNIVERSAL 2210, 2260, AND 2266 1-AXIS ACCELEROMETERS
EXAMPLE 50G

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UNIVERSAL 2210, 2260, AND 2266 1-AXIS ACCELEROMETERS
EXAMPLE 100G100g and greater versions are tested and specified from -65 to +65g.

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UNIVERSAL 2210, 2260, AND 2266 1-AXIS ACCELEROMETERS
EXAMPLE 200G

100g and greater versions are tested and specified from -65 to +65g.

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25-Aug-2020

UNIVERSAL 2210, 2260, AND 2266 1-AXIS ACCELEROMETERS
EXAMPLE 400G

100g and greater versions are tested and specified from -65 to +65g.

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25-Aug-2020