scholarly journals A Band-pass ΔΣ Modulator with Variable Center Frequency

2015 ◽  
Vol 51 (10) ◽  
pp. 678-686
Author(s):  
Hiroto YOSHINARI ◽  
Kosuke TSUKAMOTO
Keyword(s):  
Center Frequency ◽  
Delta Sigma Modulator ◽  
Delta Sigma ◽  
Band Pass ◽  
Variable Center

scholarly journals A 1 V 92 dB SNDR 10 kHz Bandwidth Second-Order Asynchronous Delta-Sigma Modulator for Biomedical Signal Processing

Sensors ◽  
2020 ◽  
Vol 20 (15) ◽  
pp. 4137
Author(s):  
Vilém Kledrowetz ◽  
Lukáš Fujcik ◽  
Roman Prokop ◽  
Jiří Háze
Keyword(s):  
Signal Processing ◽  
Supply Voltage ◽  
Input Voltage ◽  
General Purpose ◽  
Second Order ◽  
Biomedical Signal Processing ◽  
Center Frequency ◽  
Voltage Range ◽  
Delta Sigma Modulator ◽  
Delta Sigma

In this paper, a second-order asynchronous delta-sigma modulator (ADSM) is proposed based on the active-RCintegrators. The ADSM is implemented in the 0.18 μ m CMOS Logic or Mixed-Signal/RF, General Purpose process from the Taiwan Semiconductor Manufacturing Company with a center frequency of 848 kHz at a supply voltage of 1 V with a 92 dB peak signal-to-noise and distortion ratio ( S N D R ), which corresponds to 15 bit resolution. These parameters were achieved in all the endogenous bioelectric signals bandwidth of 10 kHz. The ADSM dissipated 295 μ W and had an area of 0.54 mm 2 . The proposed ADSM with a high resolution, wide bandwidth, and rail-to-rail input voltage range provides the universal solution for endogenous bioelectric signal processing.

Sign in / Sign up

Export Citation Format

Share Document