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SILICON DESIGNS, INC
! 3 Axis Acceleration Sensing ! Capacitive Micromachined ! Nitrogen Damped ! 4V Differential or +4V Single Ended Outputs ! Low Power Consumption ! -55 to +125EC Operation E ! +5 V DC Power ! 8 Wire Connection ! Responds to DC & AC Acceleration ! Non Standard Ranges Available ! Rugged Anodized Aluminum Module ! Fully Calibrated DESCRIPTION
Model 2422 TRIAXIAL ANALOG ACCELEROMETER MODULE
ACTUAL SIZE
The Model 2422 triaxial accelerometer module combines three orthogonally mounted model 1210 integrated accelerometers in a rugged case for measuring accelerations in commercial/industrial environments. It is tailored for zero to medium frequency instrumentation applications. The anodized aluminum case is epoxy sealed and is easily mounted via two #8 (or M4) screws. It is relatively insensitive to temperature changes and gradients. An optional initial calibration sheet (2422-CAL) and periodic calibration checking are also available.
OPERATION
The Model 2422 produces three differential analog output voltage pairs (AON & AOP) which vary with acceleration as shown in the figure (at right). The outputs can be used in differential mode or single ended, referenced to halfway between VDD and GND. The output scale factor is ratiometric to the applied VDD voltage and at zero acceleration, both AON & AOP are equal to halfway between VDD and GND. The "Z" axis is perpendicular to the bottom of the package, with positive acceleration defined as a force pushing on the bottom of the package. The "X" and "Y" axis directions are marked on the cover with positive acceleration defined as acceleration in the direction of the axis arrow.
ORDERING INFORMATION Full Scale Model Acceleration Number 2g 2422-002 5g 2422-005 10 g 2422-010 25 g 2422-025 50 g 2422-050 100 g 2422-100 200 g 2422-200 400 g 2422-400
SIGNALS
+5V: GND: AOPX: AONX: AOPY: AONY: AOPZ: AONZ: (Power) (Ground) (Output) (Output) (Output) (Output) (Output) (Output) reddish brown wire black wire green wire . . . . . . . white wire . . . . . . . light brown wire . . . orange wire . . . . . . light blue wire . . . . yellow wire . . . . . .
APPLICATIONS
X-Axis positive output. X-Axis negative output. Y-Axis positive output. Y-Axis negative output. Z-Axis positive output. Z-Axis negative output. VIBRATION MONITORING VIBRATION ANALYSIS MACHINE CONTROL MODAL ANALYSIS ROBOTICS CRASH TESTING INSTRUMENTATION ROTATING MACHINERY CONTROL
Silicon Designs, Inc. ! 1445-NW Mall Street, Issaquah, WA 98027-5344 ! Phone: 425-391-8329 ! Fax: 425-391-0446 web site: www.silicondesigns.com [page 1] May 07
Model 2422 Analog Accelerometer Module
ABSOLUTE MAXIMUM RATINGS *
Case Operating Temperature . . . . . . . . . . . . . . -55 to +125EC Storage Temperature . . . . . . . . . . . . . . . . . . . . -55 to +125EC Acceleration Over-range . . . . . . . . . . . . . . . . 2000g for 0.1 ms Voltage on VDD to GND . . . . . . . . . . . . . . . . . . . . -0.5V to 6.5V 1 Voltage on Any Pin to GND . . . . . . . . . . . -0.5V to VDD+0.5V Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 mW * NOTICE: Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only. Functional operation of the device at or above these conditions is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ESD CONSIDERATIONS: The model 2422 accelerometer is a CMOS device subject to damage by large electrostatic discharges. Diode protection is provided on the outputs but care should be exercised during handling of the cable wire ends. Individuals and tools should be grounded before coming in contact with the cable wire ends .
PERFORMANCE - By Model: VDD=5.0VDC, TC=25EC.
MODEL NUMBER Input Range Frequency Response (Nominal, 3 dB) Sensitivity (Differential)
2
2422-002 2422-005 2422-010 2422-025 2422-050 2422-100 2422-200 2422-400 2 5 10 400 63 25 160 158 2000 50 80 316 100 40 632 200 20 1265 400 10 2530
UNITS g Hz mV/g g/(root Hz) g
0 - 300
2000 13
0 - 400
800 32
0 - 600 0 - 1000 0 - 1500 0 - 2000 0 - 2500 0 - 3500
Output Noise, Differential (RMS, typical) Max Mechanical Shock (0.1 ms)
PERFORMANCE - All Models: Unless otherwise specified VDD=5.0VDC, TC=25EC, Differential Mode.
Parameter Cross Axis Sensitivity Bias Calibration Error
3
Min -002 & -005 -010 thru -200 -002 & -005 -010 thru -200
Typ 2 2 1 100 50 1 +300 0.5 0.7 1.0 25 90 5.0 21 21 18
Max 3 4 2 300 200 2 1.0 1.5 2.0
Units % % of span (ppm of span)/EC % ppm/EC % of span dB
Bias Temperature Shift 3 (TC= -55 to +125EC) Scale Factor Calibration Error
3, 4
Scale Factor Temperature Shift (TC= -55 to +125EC) Non-Linearity 3, 4 (-90 to +90% of Full Scale) Power Supply Rejection Ratio Output Impedance Operating Voltage Operating Current 3 Mass (not including cable) Cable Mass -200 -400
3
-002 thru -100
4.75
5.25 30
V mA grams grams/meter
Notes: 1. Voltages AOP & AON may exceed 0.5 volt above or below the supply voltage, provided the current into or out of the wire is limited to 1mA. 2. Single ended sensitivity is half of values shown. 3. Tighter tolerances are available on special order. 4. 100g versions and above are tested from -65 to +65g.
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
Silicon Designs, Inc. ! 1445 NW Mall Street, Issaquah, WA 98027-5344 ! Phone: 425-391-8329 ! Fax: 425-391-0446 web site: www.silicondesigns.com [page 2] May 07
Model 2422 Analog Accelerometer Module
CABLE SPECIFICATION & LENGTH CONSIDERATIONS
The cable consists of seven 28 AWG (7x36) and one 26 AWG (7x34) tin plated copper wires. The seven smaller 28 AWG wires are covered by 6.5 mils of Teflon FEP insulation. The larger single 26 AWG wire is covered by 9 mils of black Teflon FEP insulation. The seven smaller gauge wires surround the single larger gauge (black) wire and the bundle is covered by a 10 mil thick Teflon FEP jacket with a nominal outer diameter of 0.115". We do not recommend extending the standard 1 meter cable cable length of the model 2422. If you decide to extend the cable length, we recommend you check each individual installation for oscillation by tapping the accelerometer and watching the differential output for oscillation in the 20kHz to 50kHz region. If no oscillation is present then the cable length being used is OK for that particular device. Different devices will tolerate different cable lengths.
SENSOR LOCATIONS:
+5V ONLY SILICON DESIGNS 2422-nnn Y X
.64 (Z)
.54 (Z)
Y X
.61 (X)
.216(Z)
.59 (Y)
Z X
Z
.16 (X) .59 (Y)
Inches
.16 (Y)
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
Silicon Designs, Inc. ! 1445 NW Mall Street, Issaquah, WA 98027-5344 ! Phone: 425-391-8329 ! Fax: 425-391-0446 web site: www.silicondesigns.com [page 3] May 07
.59 (X)
XXXX

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