SILICON DESIGNS, INC. Model 2220 Advanced Accelerometer Solutions Analog Accelerometer Module Capacitive Micromachined Nitrogen Damped ±4V Differential Output or 0.5V to 4.5V Single Ended Output Fully Calibrated Low Power Consumption -55 to +125°C Operation +9 to +32V DC Power Simple Four Wire Connection Low Impedance Outputs Will Drive Up To 15 Meters of Cable Responds to DC and AC Acceleration Non Standard g Ranges Available Rugged Anodized Aluminum Module Low Noise Serialized for Traceability Available G-Ranges Full Scale Model Acceleration Number ±2g 2220-002 ±5g 2220-005 ± 10 g 2220-010 ± 25 g 2220-025 ± 50 g 2220-050 ±100 g 2220-100 ±200 g 2220-200 DESCRIPTION The model 2220 accelerometer is a higher performance and wider temperature range version of the model 2210. This rugged module combines an integrated model 1221L accelerometer with high drive, low impedance buffering for measuring acceleration 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 #4 (or M3) screws. On-board regulation is provided to minimize the effects of supply voltage variation. It is relatively insensitive to temperature changes and gradients. The cable’s shield is electrically connected to the case while the ground (GND) wire is isolated from the case. An initial calibration sheet (2220-CAL) is included and periodic calibration checking is available. OPERATION The Model 2220 accelerometer module produces two analog voltage outputs, which vary with acceleration as shown in the graph on the next page. The sensitive axis is perpendicular to the bottom of the package, with positive acceleration defined as a force pushing on the bottom of the package. The signal outputs are fully differential about a common mode voltage of approximately 2.5 volts. The output scale factor is independent from the supply voltage of +9 to +32 volts. At zero acceleration the output differential voltage is nominally 0 volts DC; at ±full scale acceleration the output differential voltage is ±4 volts DC respectively. APPLICATIONS OUTPUT VOLTAGE 5 • Flight Tests • Vibration Monitoring • Vibration Analysis • Robotics • Machine Control • Modal Analysis • Crash Testing • Instrumentation 4 AO N P AO 3 2 1 0 -Full Scale 0 + Full Scale ACCELERATION SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE th Silicon Designs, Inc. • 13905 NE 128 Street, Kirkland WA 98034 • Phone: 425-391-8329 • Fax: 425-391-0446 www.silicondesigns.com [page 1] September 2012

SIGNAL DESCRIPTIONS Vs and GND (Power): Red and Black wires respectively. Power (+9 to +32 Volts DC) and ground. AOP and AON (Output): Green and White wires respectively. Analog output voltages proportional to acceleration; AOP voltage increases (AON decreases) with positive acceleration. At zero acceleration both outputs are nominally equal to 2.5 volts. The device experiences positive (+lg) acceleration with its lid facing up in the Earth's gravitational field. Either output can be used individually or the two outputs can be used differentially. (See output response plot below) ^ = Location...

Model 2220 CABLE SPECIFICATIONS & LENGTH CONSIDERATIONS The 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”. Cable lengths of up to 15 meters (50 feet) can be added to the standard 1 meter cable without the need to test for output instability. For lengths longer than 15 meters, we recommend you check each individual installation for oscillation by tapping the accelerometer and watching the differential output for oscillation in...