2412-025

SILICON DESIGNS, INC  3 Axis Acceleration Sensing  Contains 3 Model 1210 Capacitive Micromachined Accelerometers  Built-in Nitrogen Damping  ± 4V Differential & .5V to 4.5V Single Ended Outputs  Low Cost Open Frame Design  -40 to +85°C Operation  +5 V DC, 21 mA Power (typical)  Responds to DC & AC Acceleration  Non Standard Ranges Available  No External Reference Voltage Required  Serialized for Traceability Model 2412 ANALOG OPEN FRAME TRIAXIAL ACCELEROMETER DESCRIPTION The Model 2412 is a three axis, open frame accelerometer assembly for use in zero to medium frequency instrumentation applications. It contains three Model 1210 analog capacitive accelerometers orthogonally mounted on a phenolic frame. Overall size is 1.2" x 1.2" x 1.0", weight is 16 grams, and it is easily mounted via two #4 (or M3) screws (not included). An optional calibration test sheet (2412-TST) is also available which lists the measured bias, operating current and frequency response. ORDERING INFORMATION Full Scale Model Acceleration Number ± 5G ± 10 G ± 25 G ± 50 G ±100 G 2412-005 2412-010 2412-025 2412-050 2412-100 OPERATION The Model 2412 accelerometer produces three individual analog outputs which can be used either in differential or single ended modes referenced to +2.5 volts. The voltage of each output is proportional to the orthogonal component of the applied acceleration. The Model 2412 operates with a single +5 volt power supply and generates its own +2.5 volt reference with an on-board resistive divider. The three sensitive axes are perpendicular to the bottom of each of the individual accelerometer packages, with positive acceleration defined as a force pushing on the bottom of the package. PERFORMANCE Operating current is three times the current specified on the Model 1210 data sheet. Bias Calibration Error is derated from the model 1210 accelerometer to 1.5% typical and 3% max. For all other performance data, absolute maximum ratings and detailed descriptions of the AOP, AON and DV signals, please refer to Silicon Designs' Model 1210 data sheet. MOUNTS VIA TWO #4 (or M3) SCREWS. CONNECTION IS VIA STANDARD 20 CONDUCTOR RIBBON CABLE (0.05" CENTERS) & CONNECTOR (0.10” CENTERS). ACTUAL SIZE Silicon Designs, Inc.  1445 NW Mall Street, Issaquah, WA 98027-5344 web site: www.silicondesigns.com [page 1]  Phone: 425-391-8329  Fax: 425-391-0446 Nov 05 Model 2412 Triaxial Analog Accelerometer Module PIN CONNECTIONS PIN # 1 3 5 7 9 11 13 15 17 19 PIN NAME AONZ GND AOPX AONY GND DV SIGNAL DESCRIPTION (no connection) (no connection) (no connection) (no connection) Negative Analog Output (Z-Axis) Shield Ground Positive Analog Output (X-Axis) Negative Analog Output (Y-Axis) Shield Ground Deflection Voltage (test) input PIN # 2 4 6 8 10 12 14 16 18 20 PIN NAME GND GND GND GND AOPZ AONX GND AOPY VDD +2.5V SIGNAL DESCRIPTION Shield Ground Shield Ground Shield Ground Shield Ground Positive Analog Output (Z-Axis) Negative Analog Output (X-Axis) Shield Ground Positive Analog Output (Y-Axis) +5 Volt DC power 2.5 Volt Reference * * NOTE: The +2.5V reference is generated on-board and is supplied to pin 20 as a reference for single ended connections. Silicon Designs, Inc.  1445 NW Mall Street, Issaquah, WA 98027-5344 web site: www.silicondesigns.com [page 2]  Phone: 425-391-8329  Fax: 425-391-0446 Nov 05