Abstract
A novel input stage for low-voltage, low-noise preamplifiers for
integrated capacitive sensors is presented. The input stage of the
preamplifier employs floating-gate MOS transistors which are
capable of storing the operation point of the input stage over
several years without any severe degradation of the performance of
the circuit and without the need for a repeating programming. In
this way the noise originating from any resistance previously used
for the definition of the operating point is avoided completely
and, moreover, by avoiding the input high-pass filter both the
saturation of the input stage is abolished and very-low-frequency
signal can be handled. A preamplifier using the proposed input
stage, optimized for lowest white noise operation has been
fabricated in a 0.8 micron CMOS process. The circuit operates with
a power supply of 1.5V and consumes only a little bias current.
| Original language | English |
|---|---|
| Title of host publication | Proc. 1997 European Conference on Circuit Theory and Design, vol.2 |
| Place of Publication | Budapest |
| Publisher | Technical University of Budapest |
| Publication date | 1997 |
| Pages | 990-995 |
| Publication status | Published - 1997 |
| Event | 1997 European Conference on Circuit Theory and Design - Technical University of Budapest, Budapest, Hungary Duration: 30 Aug 1997 → 3 Sept 1997 |
Conference
| Conference | 1997 European Conference on Circuit Theory and Design |
|---|---|
| Location | Technical University of Budapest |
| Country/Territory | Hungary |
| City | Budapest |
| Period | 30/08/1997 → 03/09/1997 |