SDI 2290 HIGH PRECISION MEMS DC CALIBRATION REFERENCE ACCELEROMETER Description：

Datasheet

The SDI Model 2290 Single-Axis MEMS DC Precision Reference Calibration Accelerometer offers a precise, reliable, and accurate means of determining the sensitivity and frequency response characteristics of unknown MEMS DC accelerometers during end-to-end calibrations and related performance verifications. Within these applications, the Model 2290 serves as the "Reference Standard," either for performance specification comparisons, or as an actual substitute for the working accelerometer.

In addition to calibration verifications, the Model 2290 Series supports a variety of zero-to-medium frequency instrumentation applications, ranging from DC to 2000 Hz, and including both center of gravity acceleration measurements and equipment calibrations.

The SDI Model 2290 incorporates SDI’s hermetically sealed, low noise, Model 1527 MEMS DC Inertial-Grade surface mount accelerometer chip and SDI’s proprietary electronics for extra-low noise performance and inertial-grade stability. The rugged, anodized aluminum, 1-inch square package provides all the same durability and reliability of SDI’s industrial accelerometers, along with the convenience of a 4-wire pigtail for seamless compatibility with almost any DAQ system.

The SDI Model 2290, as with the company's other MEMS DC accelerometer lines, is relatively insensitive to temperature changes and gradients. Onboard voltage regulation and an internal voltage reference eliminate the need for precision power supplies. The anodized aluminum case is epoxy sealed and is easily mounted via two screws, an adhesive, or by attaching it to a magnet. The accelerometer is non-ferrous and will not respond to magnetic mounting. An initial calibration certificate is provided with each unit.

The Model 2290’s US export designation is ECCN 7A994. It is not ITAR controlled.

The SDI Model 2290 is both REACH and RoHS compliant.

ZERO TO MEDIUM FREQUENCY APPLICATIONS

OPERATION

These accelerometer modules 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 zero acceleration, 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.

PERFORMANCE - ALL VERSIONS

All Models: Unless otherwise specified, Vs=+8 to +32 VDC, TC=25°C, Differential Mode. Span = ±g range = 8000 mV.

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.

PACKAGE DIMENSIONS