Abstract
In this paper, a generalized technique for the design automation of fs/4 LC bandpass ΣΔ modulators using feedback FIRDACs is proposed. The FIRDACs are used to increase the degrees of freedom in order to perform an exact equivalence with high order discrete-time ΣΔ modulators and also to allow a more efficient circuit implementation of the LC filter. The design technique is based on Discrete Time-Continuous Time equivalence simplified by using the method of partial fractions expansion. The excess loop delay is taken into account without making more difficult the calculations since we define how to get the orders of the FIRDACs. Several examples of design are simulated with different values of excess loop delay.
| Original language | English (US) |
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| Title of host publication | ISCAS 2006 |
| Subtitle of host publication | 2006 IEEE International Symposium on Circuits and Systems, Proceedings |
| Pages | 1896-1899 |
| Number of pages | 4 |
| State | Published - 2006 |
| Externally published | Yes |
| Event | ISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems - Kos, Greece Duration: May 21 2006 → May 24 2006 |
Other
| Other | ISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems |
|---|---|
| Country/Territory | Greece |
| City | Kos |
| Period | 05/21/06 → 05/24/06 |
ASJC Scopus subject areas
- Electrical and Electronic Engineering