Title :
Trimless high precision ratioed resistors in D/A and A/D converters
Author :
Wittmann, Reimund ; Schardein, Werner ; Hosticka, Bedrich J. ; Burbach, Gert ; Arndt, Juergen
Author_Institution :
Fraunhofer Inst. of Microelectron. Circuits & Syst., Duisberg, Germany
fDate :
8/1/1995 12:00:00 AM
Abstract :
Investigations into realization of high precision ratioed resistors in standard CMOS and BiCMOS processes have been carried out. The results indicate that the layout of the resistors can be optimized with respect to area and matching requirements to yield relative accuracy better than 0.25%. Using an intermeshed ladder architecture, fast converters with resolution up to 10 b are realizable without trimming
Keywords :
BiCMOS digital integrated circuits; analogue-digital conversion; digital-analogue conversion; ladder networks; resistors; 10 bit; A/D converters; BiCMOS processes; D/A converters; area requirements; intermeshed ladder architecture; matching requirements; relative accuracy; resistor layout; resolution; trimless high precision ratioed resistors; BiCMOS integrated circuits; CMOS process; Contact resistance; Design optimization; Error correction; Etching; Lithography; Microelectronics; Resistors; Temperature;
Journal_Title :
Solid-State Circuits, IEEE Journal of
