A Low-Offset Low-Noise Sigma-Delta Modulator With Pseudorandom Chopper-Stabilization Technique
- 24 March 2009
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Circuits and Systems I: Regular Papers
- Vol. 56 (12), 2533-2543
- https://doi.org/10.1109/tcsi.2009.2018922
Abstract
This paper presents a low-offset low-noise sigma-delta modulator with pseudorandom chopper-stabilization technique. The comparison of the noise-cancellation ability with the correlated double sampling and chopper-stabilization techniques is demonstrated; also, the noise performance of these cancellation techniques is observed and discussed. Using the proposed technique, the modulator achieves 92 dB of dynamic range and -135 dB of noise floor while consuming 950 ¿W from a 3-V supply. Based on the experimental results, the pseudorandom chopper-stabilization technique has a DC offset voltage that is 6 dB lower than that of the chopper-stabilization technique, and retains a thermal noise floor that is 1.6 dB lower than that of the correlated double sampling technique.Keywords
This publication has 21 references indexed in Scilit:
- On the Polyphase Decomposition for Design of Generalized Comb Decimation FiltersIEEE Transactions on Circuits and Systems I: Regular Papers, 2008
- Cancellation of Amplifier Offset and $1/{f}$ Noise: An Improved Chopper Stabilized TechniqueIEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing, 2007
- Generalized Comb Decimation Filters for $\Sigma\Delta$ A/D Converters: Analysis and DesignIEEE Transactions on Circuits and Systems I: Regular Papers, 2007
- Design-oriented estimation of thermal noise in switched-capacitor circuitsIEEE Transactions on Circuits and Systems I: Regular Papers, 2005
- Chopper-stabilized high-pass sigma delta modulator utilizing a resonator structureIEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing, 2003
- Generalization of the principle of chopper stabilizationIEEE Transactions on Circuits and Systems I: Regular Papers, 2003
- Wideband low-distortion delta-sigma ADC topologyElectronics Letters, 2001
- Circuit techniques for reducing the effects of op-amp imperfections: autozeroing, correlated double sampling, and chopper stabilizationProceedings of the IEEE, 1996
- A higher order topology for interpolative modulators for oversampling A/D convertersIEEE Transactions on Circuits and Systems, 1990
- Decimation for Sigma Delta ModulationIEEE Transactions on Communications, 1986