Title :
A self-configuring accelerometer hybrid
Author_Institution :
Dept. of Electr. & Comput. Eng., Kansas State Univ., Manhattan, KS, USA
Abstract :
The SCAT (self-configuring acceleration transducer) CMOS chip is part of a hybrid circuit which buffers analog signals in the 1-Hz to 1-kHz range and has two pins: ground and supply. Since power to the hybrid is from a DC current source (2 mA to 20 mA) the voltage at the supply cable is the output signal. SCAT outputs a unique 36-b signature when power is applied and then becomes a buffer amplifier for a high-impedance, plastic, Kynar accelerometer. The author describes the unique sections of the SCAT chip used in the hybrid: (1) a buffer amplifier, (2) the signature logic with polysilicon fuses, (3) an oscillator, (4) a voltage/current reference, and (5) a power-off timer to avoid signature glitches. Prototype chips and hybrids met or exceeded all specifications
Keywords :
acceleration measurement; accelerometers; hybrid integrated circuits; 1 Hz to 1 kHz; 2 to 20 mA; CMOS chip; DC current source; SCAT; analog signals; buffer; buffer amplifier; oscillator; polysilicon fuses; power-off timer; self-configuring accelerometer hybrid; signature logic; voltage/current reference; Acceleration; Accelerometers; CMOS analog integrated circuits; High power amplifiers; Logic; Pins; Plastics; Power amplifiers; Transducers; Voltage;
Conference_Titel :
Circuits and Systems, 1991., Proceedings of the 34th Midwest Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-0620-1
DOI :
10.1109/MWSCAS.1991.252166
