PREMIUM HERMETIC LOW VOLTAGE +5V MEMS DC
MODEL 2422H ACCELEROMETER MODULE••••••••••Low Noise: 10 μg√ Hz Typical for ±2g Full Scale Versions-55 to +125°C Operating Temperature RangeAcceleration and Vibration Sensing
Excellent Long-Term Stability+5 VDC Power for Low Voltage Power Supply Systems±4V Differential Output or 0.5V to 4.5V Single Ended Output
Responds to frequencies from zero (DC) to 2000+ Hz
Simple Eight (8) Wire Connection
Rugged, Hermetic Titanium Case Capable of IP67
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

PREMIUM, LOW VOLTAGE, HERMETIC +5V DC 3-AXIS ACCELEROMETER
The Model 2422H Specialty Hermetic MEMS DC Accelerometer from Silicon Designs (SDI)
is low-cost, integrated plug-and-play measurement device suitable for a wide array ofdemanding applications. The 2422H provides enhanced performance over temperature inzero to medium frequency applications experiencing large or rapid temperature variations
or maintaining hot or cold extremes for extended periods of time.
The SDI Model 2422H contains three orthogonally mounted, premium accelerometer LCCs,
making them even less sensitive to temperature changes and gradients from -55 to +125°C and greatly reducing
bias and scale factor temperature shifts for premium performance. Their enhanced, temperature compensated,proprietary SDI Model 1522 accelerometer LCC chips are individually tested, calibrated and verified in a climatechamber. The 2422H comes with an initial calibration report featuring additional information about the linearity,output, phase, and frequency response as tested for each unit.
SDI Model 2422H accelerometers are packaged in rugged, hermetically-sealed, titanium cases, and connectors
allow for customized cable lengths and easy repositioning. The cases are rated IP67; the connector is rated IP61
and can meet IP67 when sealed with a boot, sleeve, or heat shrink. The case is easily mounted via two screws,
adhesive, or by attaching a magnet.

ZERO (DC) TO MEDIUM FREQUENCY APPLICATIONSPERFORMANCE BY G RANGEFREQUENCYRESPONSE(TYPICAL, 5%)

INPUT
RANGE

SENSITIVITY,DIFFERENTIALgmV/g

Hz±2±5±10±25±50±100±200±400

2000
800
400160804020100 – 250
0 – 400
0 – 700
0 – 1300
0 – 1600
0 – 1700
0 – 1900
0 – 2000FREQUENCYRESPONSE(TYPICAL, 3 DB)

FREQUENCYRESPONSE(MINIMUM, 3 DB)

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

HzHzμg/(root Hz)

g (peak)0 – 525
0 – 800
0 – 1100
0 – 1750
0 – 2100
0 – 30000 – 3600
0 – 4200

0 – 300
0 – 4200 – 660
0 – 1050
0 – 1400
0 – 1700
0 – 2100
0 – 2400

1015233860
121243475

By Version: VDD=VR=5.0 VDC, TC=25°C

2000

5000

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]

15-July-2020

SPECIALTY LOW VOLTAGE +5V MODEL 2422H HERMETIC MEMS DC ACCELEROMETERPERFORMANCE - 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) 10.15
0.5± % of span
Bias Temperature Shift (Coefficient)-100
0+100(PPM of span)/°C
Scale Factor Temperature Shift (Coefficient)-150
0+50PPM/°C
Cross Axis Sensitivity
23±%
Power Supply Rejection Ratio25dB
Output Impedance
1ΩOutput Common Mode Voltage
2.5
VDC
Operating Voltage
4.75
55.25
VDC
Operating Current (AOP & AON open)
2130mA DC
Mass24grams
Operating Temperature-55+125°C
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 Low-Cost accelerometer modules.
For applications experiencing larger temperature variations (i.e. exposure to engine temperatures or arctic testing)
SDI suggests the upgraded Premium accelerometer modules. These have enhanced, temperature compensated,proprietary SDI Model 1522 accelerometer chips, which are individually tested, calibrated and verified in a climate
chamber to provide the most accuracy 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 isideally equal to zero g or zero volts.
The ratio of the change in output to a unit change in the input acceleration expressed in millivolts perg (mV/g). Since the output of most accelerometers is slightly non-linear, the scale factor value isScale Factor
defined 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.
BiasFor example, the percent of span bias shift that would occur for a 25g full scale device with a +/-200
Temperature PPM of span per °C rating and a 55 °C rise from room temperature would be: +/-200 / 1,000,000 xShift(80C - 25C) x 100% of span = +/-1.1% of span. The g shift would be +/-1.1% of 50g = 0.55 g. This error(Coefficient) in terms of 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.
Scale Factor
For example, the percent shift in scale factor that would occur for a device with a +200 PPM per °C
Temperature
rating and a 60 °C rise from room temperature would be: +200 / 1,000,000 x (85C - 25C) x 100% =Shift+1.2%. For an analog 10g device, the scale factor would rise from its nominal (8 V)/(20 g) = 400 mV/g(Coefficient)
at +25C to 400 mV/g +1.2% = 404.8 mV/g.

Bias
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]15-July-2020

SPECIALTY LOW VOLTAGE +5V MODEL 2422H HERMETIC MEMS DC ACCELEROMETEROPERATION
SDI Model 2422H Specialty +5 VDC Hermetic MEMS DC Accelerometers provide optimal performance when they areconnected to instrumentation in a differential configuration using both the AOP and AON output signals, but theyalso 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 SPECIFICATIONSThe SDI Model 2422H has a 9-pin connector and only
eight pins are used for the 8-wire cable; the 8PINCAB cable consists of eight 26 AWG tin-plated
copper wires. All eight of the 26 AWG wires arecovered by 8.5 mils of Teflon insulation.
Cables are available in five standard lengths, andcustom lengths may be available for special order.

CABLE LENGTH CONSIDERATIONSThe 8PIN-CAB is available in five (5) standard lengths. Custom lengths may be available for special order. However,while it is possible to extend the cable length of the Model 2422H beyond 10 feet, it is not recommended due to thelimited voltage.
NAME
8PIN-CAB-04
8PIN-CAB-10

LENGTH - FEET
4 feet10 feetLENGTH - METERS (APPROXIMATE)
1.2 Meters
3 Meters


SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
Silicon Designs, Inc. • 13905 NE 128th Street, Kirkland WA 98034 • Phone: 425-391-8329 • Fax: 425-391-0446
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SPECIALTY LOW VOLTAGE +5V MODEL 2422H HERMETIC MEMS DC ACCELEROMETERRECOMMENDED CONNECTIONS - DIFFERENTIAL
SDI Model 2422H is connected to instrumentation in a differential configuration using both the AOP and AON outputsignals.

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]15-July-2020

SPECIALTY LOW VOLTAGE +5V MODEL 2422H HERMETIC MEMS DC ACCELEROMETERRECOMMENDED 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 5]15-July-2020

SPECIALTY LOW VOLTAGE +5V MODEL 2422H HERMETIC MEMS DC ACCELEROMETERPACKAGE DIMENSIONS
>@',$6(5,$/

2422H-xxx

X Y$23=$21<$21;
$23<PINOUT

ZYZZ

0.13 (X)
0.60 (Y)

0.55 (X)X

0.60 (Z)

*1'
96
$23;

XXXX

2422H-xxx

X.(<$21=0.55 (Y)0.18 (Z)Inch [mm]6,/,&21'(6,*16X YZX>@>@0.37 (Z)XXXX
>@

6,/,&21'(6,*16

>@>@>@>@>@>@

0.13 (Y)
0.58 (X)X

All measurements are in inches

COMPARABLE MODELSSDI also produces premium 3-axis accelerometer models with power regulation and internal amplifiers for use with+8-32 V DC power supplies. Within these, customers can choose between an integrated 3’ cable or an identicalconnector to that on the 2422H, allowing for interchagable cables.
ALTERNATIVE MODEL

CHARACTERISTICS

24702476

2480

•
•
•

Anodized aluminum case
LxWxH Dimensions: 1”x1”x 0.825”
Integrated 3’ cable with strain relief•••

Anodized aluminum case
LxWxH Dimensions: 1”x 1”x 0.825”
Same connector as 2422H for interchangeable
cables•••Hermetic, titanium case identical to 2422H
LxWxH Dimensions: 1”x 1”x 0.825”
Same connector as 2422H for interchangeablecables


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]15-July-2020

SPECIALTY LOW VOLTAGE +5V MODEL 2422H HERMETIC MEMS DC ACCELEROMETERCALIBRATION REPORT EXAMPLESLINEARITY, PHASE & FREQUENCY RESPONSE BY G-LEVEL
The included 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 calibration
reports, by G-level for the SDI Model 2422 Premium 3-axis accelerometer.

EXAMPLE 2G in 3-AXIS

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SPECIALTY LOW VOLTAGE +5V MODEL 2422H HERMETIC MEMS DC ACCELEROMETER
EXAMPLE 5G in 3-AXIS

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SPECIALTY LOW VOLTAGE +5V MODEL 2422H HERMETIC MEMS DC ACCELEROMETER
EXAMPLE 10G in 3-AXIS

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SPECIALTY LOW VOLTAGE +5V MODEL 2422H HERMETIC MEMS DC ACCELEROMETER
EXAMPLE 25G in 3-AXIS

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SPECIALTY LOW VOLTAGE +5V MODEL 2422H HERMETIC MEMS DC ACCELEROMETER
EXAMPLE 50G in 3-AXIS

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SPECIALTY LOW VOLTAGE +5V MODEL 2422H HERMETIC MEMS DC ACCELEROMETEREXAMPLE 100G in 3-AXIS

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SPECIALTY LOW VOLTAGE +5V MODEL 2422H HERMETIC MEMS DC ACCELEROMETER
EXAMPLE 200G in 3-AXIS

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Silicon Designs, Inc. • 13905 NE 128th Street, Kirkland WA 98034 • Phone: 425-391-8329 • Fax: 425-391-0446
www.silicondesigns.com[page 13]15-July-2020SPECIALTY LOW VOLTAGE +5V MODEL 2422H HERMETIC MEMS DC ACCELEROMETER
EXAMPLE 400G in 3-AXIS

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www.silicondesigns.com[page 14]

15-July-2020