DC-DC converter with continuous-time feed-forward Sigma-Delta modulator control

2012 ◽  
Author(s):  
Hong Gao ◽  
Lin Xing ◽  
Yasunori Kobori ◽  
Feng Zhao ◽  
Haruo Kobayashi ◽  
...  
Keyword(s):  
Continuous Time ◽  
Sigma Delta Modulator ◽  
Sigma Delta ◽  
Feed Forward

A 56 mW Continuous-Time Quadrature Cascaded $\Sigma\Delta$ Modulator With 77 dB DR in a Near Zero-IF 20 MHz Band

2007 ◽  
Vol 42 (12) ◽  
pp. 2696-2705 ◽  
Author(s):  
Lucien J. Breems ◽  
Robert Rutten ◽  
Robert H. M. van Veldhoven ◽  
Gerard van der Weide
Keyword(s):  
Continuous Time ◽  
Sigma Delta Modulator ◽  
Sigma Delta

scholarly journals Chip Design of a Low-Voltage Wideband Continuous-Time Sigma-Delta Modulator with DWA Technology for WiMAX Applications

2011 ◽  
Vol 02 (03) ◽  
pp. 201-209 ◽  
Author(s):  
Jhin-Fang Huang ◽  
Yan-Cheng Lai ◽  
Wen-Cheng Lai ◽  
Ron-Yi Liu
Keyword(s):  
Continuous Time ◽  
Low Voltage ◽  
Chip Design ◽  
Sigma Delta Modulator ◽  
Sigma Delta

Design of Third-Order Single-Loop Full Feed-Forward Sigma Delta Modulator

2014 ◽  
Vol 609-610 ◽  
pp. 1176-1180
Author(s):  
Liang Liu ◽  
Song Chen ◽  
Chong He ◽  
Liang Yin ◽  
Xiao Wei Liu
Keyword(s):  
Model Building ◽  
Inertial Sensors ◽  
Sampling Rate ◽  
Third Order ◽  
Sigma Delta Modulator ◽  
Sigma Delta ◽  
Feed Forward ◽  
Single Loop ◽  
Local Feedback ◽  
Sigma Delta Adc

Sigma Delta modulator is widely used in ADC for kinds of micro inertial sensors, Sigma Delta ADC can be easily integrated with digital circuits. It possesses some performances of good linearity and high accuracy, while it has no such strict requirements for the match of device dimensions. In this paper, the design of third-order Sigma Delta modulator with a structure of single-loop full feed-forward is accomplished, meanwhile it uses local feedback for zero optimization to improve the shaping capacity of the modulator noise within the signal bandwidth. The OSR (over-sampling rate) of the modulator is 128 and the signal bandwidth is 10 kHz. By the system model building and simulation in the Simulink of MATALAB, the SNR is 96.3 dB and the ENOB is 15.71 bits. Then the modulator is implemented into transistor-level circuits with 0.5um process, by the simulation in Spectre of Cadence, the SNR is 88.5 dB and the ENOB is 14.41 bits. 搜

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