The signal to noise and distortion ratio for sigma delta ADC for SDR 3G/4G mobile receivers

2013 ◽  
Author(s):  
Preeti Trivedi ◽  
Ajay Verma
Keyword(s):  
Signal To Noise ◽  
Sigma Delta ◽  
Mobile Receivers ◽  
Sigma Delta Adc

VCO-BASED CONTINUOUS-TIME SIGMA DELTA ADC BASED ON A DUAL-VCO-QUANTIZER-LOOP STRUCTURE

2013 ◽  
Vol 22 (09) ◽  
pp. 1340013 ◽  
Author(s):  
Z. T. XU ◽  
X. L. ZHANG ◽  
J. Z. CHEN ◽  
S. G. HU ◽  
Q. YU ◽  
...  
Keyword(s):  
Continuous Time ◽  
Signal To Noise Ratio ◽  
Quantization Noise ◽  
Cmos Process ◽  
Voltage Controlled Oscillator ◽  
Loop Structure ◽  
Signal To Noise ◽  
Sigma Delta ◽  
Analog To Digital ◽  
Sigma Delta Adc

This paper explores a continuous time (CT) sigma delta (ΣΔ) analog-to-digital converter (ADC) based on a dual-voltage-controlled oscillator (VCO)-quantizer-loop structure. A third-order filter is adopted to reduce quantization noise and VCO nonlinearity. Even-order harmonics of VCO are significantly reduced by the proposed dual-VCO-quantizer-loop structure. The prototype with 10 MHz bandwidth and 400 MHz clock rate is designed using a 0.18 μm RF CMOS process. Simulation results show that the signal-to-noise ratio and signal-to-noise distortion ratio (SNDR) are 76.9 and 76 dB, respectively, consuming 37 mA at 1.8 V. The key module of the ADC, which is a 4-bit VCO-based quantizer, can convert the voltage signal into a frequency signal and quantize the corresponding frequency to thermometer codes at 400 MS/s.

Sigma-Delta ADC on SOI Technology for Working at High Temperatures

2020 ◽  
Vol 63 (11) ◽  
pp. 586-595
Author(s):  
Alexander Korotkov ◽  
Dmitry Morozov ◽  
Mikhail Pilipko ◽  
Mikhail Yenuchenko
Keyword(s):  
High Temperatures ◽  
Sigma Delta ◽  
Sigma Delta Adc ◽  
Soi Technology

A 2.5-V 14-bit, 180-mW Cascaded $\Sigma\Delta$ ADC for ADSL2+ Application

2007 ◽  
Vol 42 (11) ◽  
pp. 2357-2368 ◽  
Author(s):  
Teng-Hung Chang ◽  
Lan-Rong Dung ◽  
Jwin-Yen Guo ◽  
Kai-Jiun Yang
Keyword(s):  
Sigma Delta ◽  
Sigma Delta Adc

Mixed Mode Sigma-Delta ADC Design for High Quality Audio

2000 ◽  
pp. 229-246
Author(s):  
Giovanni Cesura ◽  
Alessandro Venca ◽  
Vittorio Colonna ◽  
Gabriele Gandolfi ◽  
Sandro Dalle Feste ◽  
...  
Keyword(s):  
Mixed Mode ◽  
High Quality ◽  
Sigma Delta ◽  
Sigma Delta Adc
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