Electronic interface system with 7.5/12.5V actuation for MEMS accelerometer

An electronic interface system for MEMS accelerometer is implemented in 0.18μm HVCMOS technology. The ASIC uses 7.5/12.5V to increase the net actuation force and increases the input acceleration range. The measured ASIC sensitivity is 35fF/g. Maximum measured error is 0.38% of full scale, for 0 to 5g input acceleration. This ASIC interface includes on-chip reference generation, decimation, and temperature compensation.