A5080305990- Analog and Mixed-Signal Circuit Design
- Advancements in Semiconductor Devices and Circuit Design
- CCD and CMOS Imaging Sensors
- Advancements in PLL and VCO Technologies
- Low-power high-performance VLSI design
- Neuroscience and Neural Engineering
- Radio Frequency Integrated Circuit Design
- Advanced Memory and Neural Computing
- Energy Harvesting in Wireless Networks
- Semiconductor materials and devices
- Image and Signal Denoising Methods
- Full-Duplex Wireless Communications
- Mechanical and Optical Resonators
- Nuclear Physics and Applications
- Chaos control and synchronization
- Radiation Effects in Electronics
- Advanced Sensor and Energy Harvesting Materials
- Sensor Technology and Measurement Systems
- Analytical Chemistry and Sensors
- ECG Monitoring and Analysis
- Radiation Detection and Scintillator Technologies
- Innovative Energy Harvesting Technologies
- Fractional Differential Equations Solutions
- Ion-surface interactions and analysis
- Advanced Frequency and Time Standards
National Institute of Astrophysics, Optics and Electronics
2016-2025
Benemérita Universidad Autónoma de Puebla
2012-2024
New Mexico State University
2020
Universidad Veracruzana
2016
Texas A&M University
2003-2004
Analog Devices (United States)
2004
Center for Research and Advanced Studies of the National Polytechnic Institute
2004
This work describes MexSIC, a data acquisition channel designed for Silicon Photomultipliers (SiPMs), composed of mixed-mode application specific integrated circuit (ASIC) front-end, an FPGA-based processing stage, and user interface. The ASIC provides 1-bit sigma-delta modulated (ΣΔ – <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">M</i> ) digital equivalent the input SiPM current, flag indicating start/end pulse, clock reference generated...
A full CMOS seventh-order linear phase filter based on g/sub m/-C biquads with a -3-dB frequency of 200 MHz is realized in 0.35-μm process. The operational transconductance amplifier complementary differential pairs order to achieve both low-distortion figures and high-frequency operation. common-mode feedback (CMFB) employed takes advantage the architecture; incorporating load capacitors into CMFB loop improves further its margin. very simple automatic tuning system corrects deviations due...
A simple technique to implement highly power efficient class AB-AB Miller op-amps is presented in this paper. It uses a composite input stage with resistive local common mode feedback that provides AB operation the and essentially enhances op-amp's effective transconductance gain, dc open-loop gain-bandwidth product, slew rate just moderate increase dissipation. The experimental results of strong inversion subthreshold fabricated 130-nm standard CMOS technology validate proposed approach....
This work presents a Cap-less Low-Drop Out (LDO) Voltage Regulator that uses Bootstrap Flipped-Voltage Follower (B-FVF) as the input stage of its active compensation network. Previous works use networks whose frequency response shows high-pass behavior depends on their capacitor Cf. The dominant pole is related to value By using B-FVF, this Cf-pole dependency broken; only gain loop lies Cf, while referred B-FVF node capacitance. advantage allows integration smaller 10X reduction compared...
This work presents a reconfigurable-band analog filter capable of performing the low-pass, high-pass, band-pass or all-pass functions. The proposed is simple and compact cell composed only two RC networks one differential Operational Transconductance Amplifier (OTA). To select desired type, configurations must be done: 1) network shall configured as low-pass/low-pass, high-pass/high-pass low-pass/high-pass, 2) input signals fed in single mode. validate theory simulations, was designed,...
A CMOS low-voltage amplifier with approximately constant bandwidth and DC rejection is introduced. The design based on the cascade of a wide linear input range OTA, an op-amp servo-loop extremely large time constants. It operates ±0.45V supplies power consumption 0.81mW in 180nm technology. changes only from 9.08MHz to 9.54MHz over gain 1 32, it has 9.8Hz low cutoff frequency attenuation 38dBs. floating voltage sources are used keep gates all differential pairs at value close supply rail...
In this work, a photodiode for the visible spectral range, which will be integrated monolithically with CMOS circuits, is presented. Such Optoelectronic Integrated Circuit (OEIC) high sensitivity in 400-900 nm range utilized to realize electronic processing from light beam position that hit specific area of photodetector. The output signals voltages 0V and 3 V can implemented controller circuit. By Using He-Ne Laser at 633 as incident light, responsivity Position Sense Photodetector (PSPD)...
This paper presents a study to build firstly pair of low effective transconductance OTAs, and secondly choose the better OTA for designing band-pass amplifier suitable process biosignals, where it is desirable obtain high CMRR. From this one OTAs reaches CMRR 87dB when ±0.5V bias used, while required cut-off frequencies (0.5Hz 10.0kHz) are well achieved. The at room temperature gm=695nS. In order satisfy high-pass frequency, pole based on pseudo-resistor was designed. resistance...
Active filter design is a mature topic that provides good solutions can be implemented using discrete devices or integrated circuit technology. For instance, when the topologies are commercially available operational amplifiers (opamps), one explore varying parameters to tune central frequency enhance quality (Q) factor. We show addition of feedback loop in signal flow graph biquadratic topology, which enhances Q and highlights sensitivity analysis performed identify elements influence...
This paper presents a compact bidirectional current mirror suitable for low voltage applications. The idea is to use complementary transistors in subthreshold which are able set reduced bias through the mirror. circuit class AB operation with THD near 1% at 1MHz. bandwidth above 10MHz as shown by simulations using Spectre 0.5μm CMOS technology parameters.
An OTA with a feedforward compensation scheme uses positive phase shift of left half plane (LHP) zeros created by path to cancel the negative poles, thereby overcoming limitations traditional Miller schemes. The is used in design fourth order switched capacitor bandpass /spl Sigma//spl Delta/ modulator IF at one-fourth sampling frequency. cascade resonators feedback architecture, along paths for stability. Experimental results designed TSMC 0.35 mu/m CMOS technology show peak SNR 80 dB and...
In this paper, we present the design of an analog Automatic Gain Control with a small silicon area and reduced power consumption using 0.5 μ m process. The uses classical approach implementing AGC system simple blocks, such as: peak detector, difference amplifier, four-quadrant multiplier, inversor amplifier. Those blocks were realized by modified Miller type OPAMP, which allows indirect compensation, while detector MOS diode. is simulated Tanner-Eda environment Berkeley models BSIM49...
This work proposes a Digitally Enhanced Low-Drop Out Voltage Regulator (DE-LDO) for Ultra High Radio Frequency IDentification (UHF RFID) passive tags. The DE-LDO design approach is based on the Finite State Machine (FSM) nature of tag Digital Control. Injecting part FSM unconsumed current into LDO loop to enhance transient response, more flat output voltage obtained. Chip measurements shows that consumes quiescent 600 nA at 1.6 V, delivering an and 8 µA 1.2 V; 69.76% Power Efficiency (PE)...
This paper presents a review of CMOS circuit trends for biomedical applications. Biosignals are explored in relation to their bandwidth, providing insights into the set requirements effective signal conditioning. The need such conditioning arises particularly when integrating very low-frequency poles and zeros silicon. We analyze relevant proposals from open literature, specifically focusing on in-field applications where both Power Supply Rejection Ratio (PSRR) Common-Mode (CMRR) must...
This study rigorously investigates the effectiveness of nonlinear filters in CMOS for 2-D signal processing to enhance image quality. We comprehensively compare traditional linear filters' performance, which operate on principle linearity, with filters, such as median-median (Med-Med) approach, designed handle data. To ensure validity our findings, we use widely accepted metrics like normalized squared error (NSE), peak signal-to-noise ratio (PSNR), and structural similarity index (SSIM)...