Silicon Designs designs and manufactures both commercial and inertial grade MEMS capacitive accelerometer modules and chips for OEM, instrumentation, and test & measurement applications. Our rugged accelerometer designs, featuring integrated amplification, provide both DC and dynamic response to acceleration. Integrated electronics provide a high-level, low-impedance output to minimize environmental noise pickup. No separate charge amplifiers are required. A rigorous quality control system and a variety of additional screening options also make our accelerometers suitable for high-reliability applications, such as spacecraft, military, and aerospace testing. An overview of our surface mount offerings may be found below.
Compare Surface Mount Accelerometers
All Silicon Designs high-performance, low-noise MEMS capacitive accelerometers are based upon a field-proven hermetically sealed, nitrogen damped design which provides both DC (constant) and AC (vibration) response. Our custom Digital and Analog ASICs allow us to produce a variety of MEMS capacitive accelerometer products, each with their own unique set of outputs, sensitivities, and form factors to fit nearly any application, whether DC or AC.
MEMS Analog Surface Mount Accelerometers
All Silicon Designs MEMS analog surface mount accelerometers feature:
±4V Differential or 0.5V to 4.5V Single Ended Output
+5 VDC power supply, 5-6 mA power (typical)
20-Pin Chip Carrier
LCC Package Size: 0.35" square x 0.11"
J-Lead Package Size: 0.35" square x 0.17"
Sensitivity is a function of G-Level and full scale differential output (4000 mV). SDI's customized MEMS sensing elements for each G-Range of sensor specify the frequency response by G-Range, which results in a lower noise accelerometer.
MEMS Analog Accelerometers | Models 1521, 1522, 1531
MEMS Inertial Navigation Analog Accelerometers | Models 1525, 1527
Silicon Designs MEMS Analog Surface Mount Accelerometers produce a differential output of ±4 volts, in voltage or single ended mode;
or 0.5 to 4.5 volts full scale, the value of which varies with acceleration, as shown.
The sensitive axis is perpendicular to the bottom of the package, with positive acceleration resulting from a positive force pushing on the bottom of the package. The seismic center is located on a centerline through the dual sense elements and halfway between them. The internal electronics effectively cancel any errors due to rotation. Two reference voltages, +5.0V and +2.5V (nominal), are required; scale factor is ratiometric to the +5.0V reference voltage relative to GND, and both outputs at zero acceleration are nominally 80 mV below the +2.5 volt input.
MEMS Digital Surface Mount Accelerometers
All Silicon Designs MEMS digital surface mount accelerometers feature:
Integrated Sensor & Amplifier
+5 VDC, 2 mA Power (typical)
Responds to DC & AC Acceleration
No External Reference Voltage
Easy Interface to Microprocessors, TTL/CMOS Compatible
Good EMI Resistance
The Model 1410 produces a digital pulse train in which the density of pulses (number of pulses per second) is proportional to applied acceleration. It requires a single +5V power supply and a TTL/CMOS level clock of 100 kHz to 1MHz. The output is ratiometric to the clock frequency and independent of the power supply voltage. Two forms of digital signals are provided for direct interfacing to a microprocessor or counter. 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. External digital line drivers can be used to drive long cables or when used in an electrically noisy environment.