Closed-loop oversampled D/A conversion with embedded filtering
Abstract/Contents
- Abstract
- This dissertation presents an oversampled DAC based on a closed-loop architecture that consists of a hybrid cascade of a digital sigma-delta modulator and an analog quasi-sigma-delta modulator. This closed-loop approach relaxes the linearity, timing and matching required of a multi-bit D/A interface. A single-pole RC filter embedded within an analog modulation loop achieves substantial out-of-band quantization noise suppression at a significant savings in power and area because no high-performance analog low-pass filter is needed at the D/A output. An experimental prototype of the closed-loop oversampled DAC with embedded reconstruction filtering has been integrated in 0.18-um CMOS. This circuit provides multi-bit conversion without DEM, as well as 3rd-order filtering of out-of-band noise. At a sampling rate of 10MHz with an OSR of 16, the DAC achieves 61-dB SNDR, 63-dB DR, and 50-dB out-of-band noise suppression, while dissipating 22mW from a 1.2-V supply.
Description
| Type of resource | text |
|---|---|
| Form | electronic; electronic resource; remote |
| Extent | 1 online resource. |
| Publication date | 2013 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Associated with | Ding, Xinying |
|---|---|
| Associated with | Stanford University, Department of Electrical Engineering. |
| Primary advisor | Wooley, Bruce A, 1943- |
| Thesis advisor | Wooley, Bruce A, 1943- |
| Thesis advisor | Meng, Teresa H |
| Thesis advisor | Su, David (David Kuochieh) |
| Advisor | Meng, Teresa H |
| Advisor | Su, David (David Kuochieh) |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | Xinying Ding. |
|---|---|
| Note | Submitted to the Department of Electrical Engineering. |
| Thesis | Thesis (Ph.D.)--Stanford University, 2013. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2013 by Xinying Ding
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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