Name
Title | ||
|---|---|---|
A Multibit Dual-Feedback Ct Delta Sigma Modulator With Lowpass Signal Transfer Function |
Abstract | ||
|---|---|---|
This paper presents a dual-feedback continuous-time delta-sigma modulator that features a signal transfer function with low sensitivity to coefficient variations. The anti-aliasing of this topology is similar to that of the feedback architecture while using only two feedback paths for modulators of any order. The proposed architecture is a good candidate for low-power applications as it shows relaxed amplifier gain-bandwidth requirements for the first integrator. As a proof of concept, a third-order delta-sigma modulator has been implemented and tested which achieves 76 dB dynamic range over 5 MHz signal bandwidth while consuming 6 mW from a 1.2 V supply. The prototype chip, fabricated in a 130 nm CMOS process, provides 70 dB anti-aliasing with no out-of-band peaking in the signal transfer function. |
Year | DOI | Venue |
|---|---|---|
2011 | 10.1109/TCSI.2011.2162464 | IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS |
Keywords | Field | DocType |
Analog to digital converter, anti-aliasing, continuous-time, delta-sigma modulation, low-pass filter | Control theory,Integrator,Electronic engineering,Delta-sigma modulation,Modulation,Analog-to-digital converter,Bandwidth (signal processing),Transfer function,Mathematics,Signal transfer function,Amplifier | Journal |
Volume | Issue | ISSN |
58 | 9 | 1549-8328 |
Citations | PageRank | References |
5 | 0.56 | 12 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Mohammad Ranjbar | 1 | 136 | 8.76 |
| Omid Oliaei | 2 | 75 | 20.09 |