Abstract
A high resolution 1bit Sigma-Delta modulator for low power/low
voltage applications is presented. The modulator operates at a
supply of 1-1.5V, the current drain is 0.1mA. The maximum
resolution is 87dB equivalent to 14 bits of resolution. This is
achieved with a signal-band of 5kHz, over-sampling ratio (OSR) of
128 and a sampling frequency of 1.28MHz. The very low power
consumption is achieved by using a new type of efficient class AB
amplifiers in a fully differential configuration. The modulator is
implemented in a 0.7 micron n-well CMOS technology. Optimisation
details concerning modulator coefficients and bias requirement of
amplifiers is described.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 14th NORCHIP Conference |
| Place of Publication | Copenhagen |
| Publisher | Technoconsult |
| Publication date | 1996 |
| Pages | 106-113 |
| Publication status | Published - 1996 |
| Event | 14th NORCHIP Conference - Helsinki, Finland Duration: 4 Nov 1996 → 5 Nov 1996 |
Conference
| Conference | 14th NORCHIP Conference |
|---|---|
| Country/Territory | Finland |
| City | Helsinki |
| Period | 04/11/1996 → 05/11/1996 |