Low-Power Analog Channel Selection Filtering Techniques

Garcia-Alberdi, Coro; Lopez-Martin, A.J.; Galán, J.; Carvajal, R.G.; Ramírez-Angulo, J.

doi:10.1007/s00034-016-0342-3

Cited by 4 publications

(4 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In [50], the authors found Gm-assisted Active-RC's linearity is better than Gm-C. The tunability of Active-RC for gain and bandwidth is much easier [52].…”

Section: Ecg Acquisition System Designmentioning

confidence: 99%

Design and Analysis of a High Gain, Low-Noise and Low-Power Analog Front End for ECG Acquisition in 45nm Technology Using Gm/Id Method

Emon,

Salim,

Chowdhury

2024

Preprint

View full text Add to dashboard Cite

In this work, an analog front-end (AFE) circuit for Electrocardiogram (ECG) detection system has been designed, implemented, and investigated in an industry-standard Cadence simulation framework using advanced technology node of 45 nm. The AFE consists of an instrumentation amplifier, a Butterworth band-pass filter (with fifth-order low-pass and second-order high-pass sections), and a second-order notch filter- all are based on two-stage, Miller-compensated operational transconductance amplifiers (OTA). The OTAs have been designed employing the $g_m/I_D$ methodology. Both the pre-layout and post-layout simulation were carried out. The layout consumes an area of 0.0058 mm$^2$ without the resistors and capacitors. Analysis of various simulation results were carried out for the proposed AFE. The circuit demonstrates a post-layout bandwidth of 239 Hz with a variable gain between 44 to 58 dB, a notch depth of -56.4 dB at 50.1 Hz, a total harmonic distortion (THD) of -59.65 dB (less than 1\%), an input referred noise spectral density of $

show abstract

“…In [50], the authors found Gm-assisted Active-RC's linearity is better than Gm-C. The tunability of Active-RC for gain and bandwidth is much easier [52].…”

Section: Ecg Acquisition System Designmentioning

confidence: 99%

Design and Analysis of a High Gain, Low-Noise and Low-Power Analog Front End for ECG Acquisition in 45nm Technology Using Gm/Id Method

Emon,

Salim,

Chowdhury

2024

Preprint

View full text Add to dashboard Cite

show abstract

“…In [53], the authors found Gm-assisted Active-RC's linearity is better than Gm-C. The tunability of Active-RC for gain and bandwidth is much easier [55].…”

Section: Ecg Acquisition System Designmentioning

confidence: 99%

Design and Analysis of a High-Gain, Low-Noise, and Low-Power Analog Front End for Electrocardiogram Acquisition in 45 nm Technology Using gm/ID Method

Emon,

Salim,

Chowdhury

2024

Electronics

View full text Add to dashboard Cite

In this work, an analog front-end (AFE) circuit for an electrocardiogram (ECG) detection system has been designed, implemented, and investigated in an industry-standard Cadence simulation framework using an advanced technology node of 45 nm. The AFE consists of an instrumentation amplifier, a Butterworth band-pass filter (with fifth-order low-pass and second-order high-pass sections), and a second-order notch filter—all are based on two-stage, Miller-compensated operational transconductance amplifiers (OTA). The OTAs have been designed employing the gm/ID methodology. Both the pre-layout and post-layout simulation are carried out. The layout consumes an area of 0.00628 mm2 without the resistors and capacitors. Analysis of various simulation results are carried out for the proposed AFE. The circuit demonstrates a post-layout bandwidth of 239 Hz, with a variable gain between 44 and 58 dB, a notch depth of −56.4 dB at 50.1 Hz, a total harmonic distortion (THD) of −59.65 dB (less than 1%), an input-referred noise spectral density of <34 μVrms/Hz at the pass-band, a dynamic range of 52.71 dB, and a total power consumption of 10.88 μW with a supply of ±0.6 V. Hence, the AFE exhibits the promise of high-quality signal acquisition capability required for portable ECG detection systems in modern healthcare.

show abstract

“…At the same time, large dynamic currents can be provided, since signals are capacitively coupled to the high impedance gate node. Due to these advantages, QFG transistors have found widespread use in the design of amplifiers but also in high-performance current mirrors [31][32][33][34][35], mixers [36,37], linearization of active resistors [38,39], DC offset cancellation servo loop circuits [40], bootstrapped switches [5], current conveyors [30,[41][42][43], Voltage Feedback Operational Amplifiers (VFOAs) [44], Current Feedback Operational Amplifiers (CFOAs) [45], buffers [46][47][48][49][50][51], rectifiers [35,52], capacitance multipliers [35], transconductors [30,[53][54][55], digital-based analog circuits [56], DC-DC converters [57], continuous-time filters [58][59][60][61], track and hold circuits [5], data converters [5,62], capacitive sensing interfaces [63], particle detectors [23] and retinal prosthesis [64], to name some representative applications.…”

Section: Introductionmentioning

confidence: 99%

Energy-Efficient Amplifiers Based on Quasi-Floating Gate Techniques

et al. 2021

Self Cite

View full text Add to dashboard Cite

Energy efficiency is a key requirement in the design of amplifiers for modern wireless applications. The use of quasi-floating gate (QFG) transistors is a very convenient approach to achieve such energy efficiency. We illustrate different QFG circuit design techniques aimed to implement low-voltage, energy-efficient class AB amplifiers. A new super class AB QFG amplifier is presented as a design example, including some of the techniques described. The amplifier has been fabricated in a 130 nm CMOS test chip prototype. Measurement results confirm that low-voltage, ultra-low-power amplifiers can be designed, preserving, at the same time, excellent small-signal and large-signal performance.

show abstract

Low-Power Analog Channel Selection Filtering Techniques

Cited by 4 publications

References 44 publications

Design and Analysis of a High Gain, Low-Noise and Low-Power Analog Front End for ECG Acquisition in 45nm Technology Using Gm/Id Method

Design and Analysis of a High Gain, Low-Noise and Low-Power Analog Front End for ECG Acquisition in 45nm Technology Using Gm/Id Method

Design and Analysis of a High-Gain, Low-Noise, and Low-Power Analog Front End for Electrocardiogram Acquisition in 45 nm Technology Using gm/ID Method

Energy-Efficient Amplifiers Based on Quasi-Floating Gate Techniques

Contact Info

Product

Resources

About