Title :
An integrated time reference
Author :
Blauschild, R.A.
Author_Institution :
Philips Semicond., Sunnyvale, CA, USA
Abstract :
The simplest and most common integrated time constant is the product of resistance and capacitance. Unfortunately, the R-C product can vary with both process and temperature by as much as 30-50%, so precision applications require trimming or external components. Many applications require an order of magnitude decrease in timing variation, and would benefit from the elimination of external components and their associated pins. The reference reported here uses mobility as a time standard to develop a resistance that is temperature stable and inversely proportional to oxide capacitance, yielding a precise RC product.<>
Keywords :
MOS integrated circuits; linear integrated circuits; oscillators; reference circuits; RC product; integrated time constant; integrated time reference; oxide capacitance; precision applications; temperature stable resistance; time standard; Capacitance; Circuits; Clocks; Doping; Filters; MOS capacitors; Oscillators; Photonic band gap; Temperature sensors; Threshold voltage;
Conference_Titel :
Solid-State Circuits Conference, 1994. Digest of Technical Papers. 41st ISSCC., 1994 IEEE International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-1844-7
DOI :
10.1109/ISSCC.1994.344728
