Switched Capacitor Circuit Realization of Sigma-Delta ADC for Temperature Sensor

2016 ◽  
pp. 1129-1135 ◽  
Author(s):  
Abhishek Pandey ◽  
Mohd. Javed Khan ◽  
Deepak Prasad ◽  
Vijay Nath ◽  
S. S. Solanki ◽  
...  
Keyword(s):  
Temperature Sensor ◽  
Switched Capacitor ◽  
Circuit Realization ◽  
Sigma Delta ◽  
Sigma Delta Adc

scholarly journals A High-Dynamic-Range Switched-Capacitor Sigma-Delta ADC for Digital Micromechanical Vibration Gyroscopes

Micromachines ◽  
2018 ◽  
Vol 9 (8) ◽  
pp. 372 ◽  
Author(s):  
Risheng Lv ◽  
Weiping Chen ◽  
Xiaowei Liu
Keyword(s):  
Dynamic Range ◽  
Signal To Noise Ratio ◽  
High Dynamic Range ◽  
Cmos Technology ◽  
Noise Cancellation ◽  
Switched Capacitor ◽  
Noise Shaping ◽  
Sigma Delta ◽  
Multi Stage ◽  
Sigma Delta Adc

This paper presents a multi-stage noise shaping (MASH) switched-capacitor (SC) sigma-delta (ΣΔ) analog-to-digital converter (ADC) composed of an analog modulator with an on-chip noise cancellation logic and a reconfigurable digital decimator for MEMS digital gyroscope applications. A MASH 2-1-1 structure is employed to guarantee an absolutely stable modulation system. Based on the over-sampling and noise-shaping techniques, the core modulator architecture is a cascade of three single-loop stages containing feedback paths for systematic optimization to avoid deterioration in conversion accuracy caused by capacitor mismatch. A digital noise cancellation logic is also included to eliminate residual quantization errors in the former two stages, and those in the last stage are shaped by a fourth-order modulation. A multi-rate decimator follows the analog modulator to suit variable gyroscope bandwidth. Manufactured in a standard 0.35 μm CMOS technology, the whole chip occupies an area of 3.8 mm2. Experimental results show a maximum signal-to-noise ratio (SNR) of 100.2 dB and an overall dynamic range (DR) of 107.6 dB, with a power consumption of 3.2 mW from a 5 V supply. This corresponds to a state-of-the-art figure-of-merit (FoM) of 165.6 dB.

scholarly journals An Ultra Low Power CMOS Sigma Delta ADC Modulator for System-on-chip (SoC) Temperature Sensor for Aerospace Applications

2018 ◽  
Vol 7 (1) ◽  
pp. 12
Author(s):  
Deepak Prasad ◽  
Vijay Nath
Keyword(s):  
Low Power ◽  
Temperature Sensor ◽  
Operational Amplifier ◽  
System On Chip ◽  
Digital Converter ◽  
Sigma Delta ◽  
Analog To Digital ◽  
Aerospace Applications ◽  
On Chip ◽  
Sigma Delta Adc

In the current paper, an accurate with low power consumed sigma delta (ΣΔ) analog to digital converter has been designed for the aerospace applications. The sigma delta ADC has been designed in such a way that it works fine with consumption of low power and high accuracy in the system on chip (SoC) temperature sensor where the analog output from the temperature sensor unit will be the fed to the analog to digital converter. To check the robustness, different parameters with variation has been analyzed. The high gain operational amplifier plays a vital role in the circuits design. Hence, a 30 MHz operational amplifier has also been proposed whose unity gain bandwidth (UGB) has been observed of about 30 MHz, 51.1dB dc gain and slew rate (SR) of about 27.9 V/ μsec. For the proper operation of the circuit, a power supply of +1.3V to -1.3V is used. The proposed sigma delta ADC modulator is showing better results over previously designed modulator in terms of power consumption, error and performance. The design and simulation have been tested with the help of cadence analog design environment with UMC 90nm CMOS process technology.

scholarly journals A temperature sensor with glucose sensor interface based on configurable incremental sigma delta ADC

2019 ◽  
Vol 16 (4) ◽  
pp. 20181025-20181025
Author(s):  
Xianliang Chen ◽  
Linxiang Li ◽  
Xi Tan ◽  
Na Yan ◽  
Junyu Wang ◽  
...  
Keyword(s):  
Temperature Sensor ◽  
Glucose Sensor ◽  
Sensor Interface ◽  
Sigma Delta ◽  
Sigma Delta Adc

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

A multi-mode blocker-tolerant GNSS receiver with CT sigma-delta ADC in 65nm CMOS

2013 ◽  
Author(s):  
Nan Qi ◽  
Zheng Song ◽  
Zehong Zhang ◽  
Yang Xu ◽  
Baoyong Chi ◽  
...  
Keyword(s):  
Sigma Delta ◽  
Gnss Receiver ◽  
Sigma Delta Adc ◽  
Multi Mode
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