Design and Implementation of Sigma Delta Modulators (ΣΔM) for Class D Audio Amplifiers using Differential Pairs Springer 2015
Authors:
1 Introduction................................................ ...
1.1 Background and Motivation..................................
1.2 Main Contributions...... ...................................
1.3 Book Organization............ ..............................
2 Class D Audio Amplifiers and Data Conversion Fundamentals.......
2.1 Class D Audio Amplifiers....................................
2.2 Signal Conversion Fundamentals......... .....................
2.3 Quantization Noise.......................... ................
2.4 Oversampling................................ ..............
2.5 Continuous-Time (CT) Sigma-Delta Modulators (ΣΔM)..........
2.6 Analysis of the ΣΔM Architecture...... .......................
2.6.1 Feedforward Summation...................... ..........
2.6.2 Feedforward Summation and Local Resonator Feedback.....
2.6.3 Distributed Feedback..................... ..............
2.6.4 Distributed Feedback and Local Resonator Feedback........
2.6.5 Comparison Between Feedforward and Feedback Compensation.......... ..............................
2.6.6 1.5-bit Quantization............. .......................
3. Implementation of the ΣΔM..................... ............... 3.1 Integrator Stages................................ ............
3.1.1 Integrator Stages Using Active RC-Integrators..............
3.1.2 Integrator Stages Using Differential Pairs...... ............
3.2 1.5-bit ADC for a Fully Differential Integrator Stage..............
3.3 Encoding Logic for the 1.5-bit Quantizer.... ...................
3.4 Feedback Circuitry for a Fully Differential Architecture...........
3.5 Simulation Results of the ΣΔM with Differential Pairs... .........
3.5.1 Simulation Results for 3rd Order a 1.5-bit CT-ΣΔM in a CRFB Structure using Active-RC Integrators...........
3.5.2 3rd Order 1 -bit CT-ΣΔM in a CIFB Structure Using Differential Pairs...................................... .........
3.5.3 3rd Order 1-bit CT-ΣΔM in a CRFB Structure Using Differential Pairs....................... ...............
3.5.4 3rd Order 1.5-bit CT-ΣΔM in a CIFB Structure Using Differential Pairs................. .....................
3.5.5 3rd Order 1.5-bit CT-ΣΔM in a CRFB Structure Using Differential Pairs........... ...........................
4 Measured Prototypes and Experimental Results................. ..
4.1 3rd Order 1-bit CT-ΣΔM in a CIFB Structure...................
4.2 3rd Order 1-bit CT-ΣΔM in a CRFB Structure... ................
4.3 1.5 3rd Order-bit CT-ΣΔM in a CRFB Structure.................
4.4 Comparison Between Theoretical and Experimental Results.......
5 Conclusions...................................... .............
5.1 Final Remarks.................................. ............
Appendix 1: Analytical Sizing of the CT-ΣΔM Implemented with Differential Pairs........................ ..........
Appendix 2:........ Feedback Circuitry for Single-Ended Architectures
References
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发表于 2015-10-24 22:00:17
