DocumentCode :
2399181
Title :
A Floating-Point A/D Converter for Smart Sensors
Author :
Mahmoud, K.M. ; Wolffenbuttel, R.F.
Author_Institution :
Dept. of Electr. Eng., Delft Univ. of Technol., Delft, Netherlands
fYear :
1992
fDate :
21-23 Sept. 1992
Firstpage :
351
Lastpage :
354
Abstract :
A binary scaled programmable current source has been designed for use in a non-linear A/D converter for smart sensors applications. The non-linear conversion is achieved by using accurate binary-weighted current sources with emitter scaling and analog current switches. The A/D converter implements two programmable current sources, the first is used to determine the exponent, while the second is used to determine the mantissa in a floating point representation number. The current source and the required electronics are implemented using a bipolar process in silicon which makes it compatible with silicon sensors. A special layout has been implemented in the design to compensate for mismatch gradients over the chip.
Keywords :
analogue-digital conversion; elemental semiconductors; intelligent sensors; silicon; Si; analog current switches; binary scaled programmable current source; bipolar process; emitter scaling; floating-point representation A/D converter; mantissa; mismatch gradients; non-linear conversion; smart sensors; Intelligent sensors; Solid state circuits;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Solid-State Circuits Conference, 1992. ESSCIRC '92. Eighteenth European
Conference_Location :
Copenhagen
Print_ISBN :
87-984232-0-7
Type :
conf
DOI :
10.1109/ESSCIRC.1992.5468129
Filename :
5468129
Link To Document :
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