Title :
Continuous Time Interface for ±1.5 g Closed-Loop Accelerometer
Author :
Aaltonen, Lasse ; Rahikkala, Pasi ; Saukoski, Mikko ; Halonen, Kari
Author_Institution :
Helsinki Univ. of Technol., Helsinki
fDate :
May 30 2007-June 1 2007
Abstract :
A continuous time analog interface for a capacitive accelerometer element is implemented. The integrated part of the interface includes an oscillator and readout circuitry excluding a controller and references. For the realized sensor, the minimum equivalent acceleration noise density of 400 ng/radicHz is measured. A full scale acceleration of plusmn1.5 g and a signal bandwidth of 300 Hz is achieved. The closed-loop sensor is capable of surviving a shock condition.
Keywords :
accelerometers; capacitive sensors; closed loop systems; continuous time systems; bandwidth 300 Hz; capacitive accelerometer; closed-loop sensor; continuous time analog interface; Acceleration; Accelerometers; Bandwidth; Capacitive sensors; Force feedback; Frequency; Low pass filters; Oscillators; Resonance; Voltage;
Conference_Titel :
Integrated Circuit Design and Technology, 2007. ICICDT '07. IEEE International Conference on
Conference_Location :
Austin, TX
Print_ISBN :
1-4244-0757-5
Electronic_ISBN :
1-4244-0757-5
DOI :
10.1109/ICICDT.2007.4299571
