The MMA2241KEG is a micro-machined Accelerometer featuring signal conditioning, a 2-pole low pass filter and temperature compensation. Zero-g offset full scale span and filter cut-off are factory set and require no external devices. A full system self-test capability verifies system functionality. The X-axis g-cell is constructed using surface micromachining; and the interface IC is fabricated in a 1.2micron (60%) silicon gate CMOS process. The signal conditioning of the accelerometer channel begins with a capacitance to voltage conversion (C to V) followed by a 2-stage switched capacitor amplifier. This 2-stage amplifier has adjustable offset and gain trimming. The offset and gain of the interface IC can be controlled by the serially accessed EPROM trimming register.
Integral signal conditioning
Linear output
Ratiometric performance
Calibrated self-test
Low voltage detect, clock monitor and EPROM parity check status
Transducer hermetically sealed at wafer level for superior reliability
(EN)
