Earnest, Aruj

Gupta, Priya

Mitra, Srinjoy

English

In this paper, a 2nd order Discrete-time (DT) modulator for 8-channel Incremental Sigma-Delta analog-to-digital (IADC) is presented for biomedical applications ranging from kHz. The proposed DT modulator with input bandwidth of 25 kHz on each channel is sampled at 51.2 MHz, with oversampling ratio of 128 implemented at 180nm technology. The proposed IADC has high-resolution, multichannel A/D conversion, simple architecture, low offset, low gain error and low area over the standard ADCs suitable. Measured results show that the SNR, DR, ENOB, power consumption and chip area of proposed IADC are 63.9 dB, 62.2 dB, 10.11 bits, 0.832 mW, and 0.032 mm2 respectively at 1.8V power supply. For testing purpose, the non-coherent sampling is done to get the FFT plot of the output signal. For further validation, the proposed 2nd order IADC was also designed and compared in MATLAB/Simulink

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10-Bit 200 kHz/8-Channel Incremental ADC for Biosensor Applications

https://www.research.ed.ac.uk/files/289949630/jcsc_paper_Revised.pdf

10-Bit 200 kHz/8-Channel Incremental ADC for Biosensor Applications

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