Listar Artículos de revista DIEC - IEKS Aldizkari artikuluak por autor UPNA "López Martín, Antonio"
Mostrando ítems 1-18 de 18
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±0.25 V Class-AB CMOS capacitance multiplier and precision rectifiers
Pourashraf, Shirin; Ramírez-Angulo, Jaime; Hinojo Montero, José María; González Carvajal, Ramón; López Martín, Antonio
(IEEE, 2019)
Artículo / Artikulua 
Reduction of minimum supply requirements is a crucial aspect to decrease the power consumption in VLSI systems. A high performance capacitance multiplier able to operate with supplies as low as ±0.25 V is presented. It is ... -
±0.3v bulk-driven fully differential buffer with high figures of merit
Gangineni, Manaswini; Ramírez-Angulo, Jaime; Vázquez-Leal, Héctor; Huerta-Chua, Jesús; López Martín, Antonio ; González Carvajal, Ramón (MDPI, 2022)
Artículo / Artikulua
A high performance bulk-driven rail-to-rail fully differential buffer operating from ±0.3V supplies in 180 nm CMOS technology is reported. It has a differential–difference input stage and common mode feedback circuits ... -
360 nW gate-driven ultra-low voltage CMOS linear transconductor with 1 MHz bandwidth and wide input range
Rico-Aniles, Héctor Daniel; Ramírez-Angulo, Jaime; López Martín, Antonio ; González Carvajal, Ramón (IEEE, 2020)
Artículo / Artikulua
A low voltage linear transconductor is introduced. The circuit is a pseudo differential architecture that operates with ±0.2V supplies and uses 900nA total biasing current. It employs a floating battery technique to achieve ... -
AC amplifiers with ultra-low corner frequency by using bootstrapping
Martincorena Arraiza, Maite ; Carlosena García, Alfonso ; Cruz Blas, Carlos Aristóteles de la ; López Martín, Antonio (Institution of Engineering and Technology, 2021)
Artículo / Artikulua
A novel architecture for an AC (i.e. high-pass) amplifier is proposed allowing a drastic reduction of the cutoff frequency to the sub-Hertz range. It builds upon the classic AC configuration with a high gain amplifier and ... -
AC coupled amplifier with a resistance multiplier technique for ultra-low frequency operation
Martincorena Arraiza, Maite ; Cruz Blas, Carlos Aristóteles de la ; Carlosena García, Alfonso ; López Martín, Antonio (Elsevier, 2022)
Artículo / Artikulua
This paper proposes a novel, tunable AC coupled capacitive feedback amplifier, exhibiting an ultra-low high pass corner frequency. This is accomplished by actively boosting the output resistive value of a MOS transistor ... -
Class AB amplifier with enhanced slew rate and GBW
Garde Luque, María Pilar ; López Martín, Antonio ; Algueta-Miguel, Jose M. ; Ramírez-Angulo, Jaime; González Carvajal, Ramón (John Wiley & Sons, 2019)
Artículo / Artikulua
The design of a micropower class AB operational transconductance amplifier with large dynamic current to quiescent current ratio is addressed. It is based on a compact and power-efficient adaptive biasing circuit and a ... -
CMOS first-order all-pass filter with 2-Hz pole frequency
Paul, Anindita; Ramírez-Angulo, Jaime; López Martín, Antonio ; González Carvajal, Ramón (IEEE, 2019)
Artículo / Artikulua
A CMOS fully integrated all-pass filter with an extremely low pole frequency of 2 Hz is introduced in this paper. It has 0.08-dB passband ripple and 0.029-mm2 Si area. It has 0.38-mW power consumption in strong inversion ... -
Energy-efficient amplifiers based on quasi-floating gate techniques
López Martín, Antonio ; Garde Luque, María Pilar ; Algueta-Miguel, Jose M. ; Beloso Legarra, Javier ; González Carvajal, Ramón; Ramírez-Angulo, Jaime (MDPI, 2021)
Artículo / Artikulua
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 ... -
An enhanced gain-bandwidth class-AB miller op-amp with 23,800 MHz pF/mW FOM, 11-16 current efficiency and wide range of resistive and capacitive loads driving capability
Paul, Anindita; Ramírez-Angulo, Jaime; Díaz Sánchez, Alejandro; López Martín, Antonio ; González Carvajal, Ramón; Li, Frank X. (IEEE, 2021)
Artículo / Artikulua
A compact power-efficient class-AB Miller op-amp is introduced. It uses a simple auxiliary circuit that enhances the op-amp's gain-bandwidth product and helps to drive a wide range of capacitive and resistive loads with ... -
A family of alternating current amplifiers for ultra-low frequency operation
Martincorena Arraiza, Maite ; Carlosena García, Alfonso ; Cruz Blas, Carlos Aristóteles de la ; Beloso Legarra, Javier ; López Martín, Antonio (Wiley, 2021)
Artículo / Artikulua
A family of capacitively coupled alternating current (AC) amplifiers featuring ultra-low (below 1 Hz) corner frequency is presented. This is achieved by using high-gain devices which actively boost feedback resistance and ... -
Fault detection of planetary gears based on signal space constellations
Martincorena Arraiza, Maite ; Cruz Blas, Carlos Aristóteles de la ; López Martín, Antonio ; Molina Vicuña, Cristian; Matías Maestro, Ignacio (MDPI, 2022)
Artículo / Artikulua
A new method to process the vibration signal acquired by an accelerometer placed in a planetary gearbox housing is proposed, which is useful to detect potential faults. The method is based on the phenomenological model and ... -
Gain-boosted super class AB OTAs based on nested local feedback
Beloso Legarra, Javier ; Cruz Blas, Carlos Aristóteles de la ; López Martín, Antonio ; Ramírez-Angulo, Jaime (IEEE, 2021)
Artículo / Artikulua
A new approach to design super class AB operational transcon-ductance amplifiers (OTAs) with enhanced large-signal and small-signal performance is presented. It is based on employing two nested positive and negative feedback ... -
A highly efficient composite class-AB–AB Miller op-amp with high gain and stable from 15 pF up to very large capacitive loads
Pourashraf, Shirin; Ramírez-Angulo, Jaime; López Martín, Antonio ; González Carvajal, Ramón (IEEE, 2018)
Artículo / Artikulua
In this paper, a highly power-efficient class-AB–AB Miller op-amp is discussed. The structure uses gm enhancement based on local common-mode feedback to provide class-AB operation with enhanced effective gm , open-loop ... -
Power efficient simple technique to convert a reset-and-hold into a true-sample-and-hold using an auxiliary output stage
Rico-Aniles, Héctor Daniel; Ramírez-Angulo, Jaime; López Martín, Antonio ; González Carvajal, Ramón; Rocha-Pérez, José Miguel; Garde Luque, María Pilar (IEEE, 2020)
Artículo / Artikulua
A technique to implement true-sample-and-hold circuits that hold the output for almost the entire clock cycle without resetting to zero is introduced, alleviating the slew rate requirement on the op-amp. It is based on a ... -
Pseudo-three-stage Miller op-amp with enhanced small-signal and large-signal performance
Paul, Anindita; Ramírez-Angulo, Jaime; López Martín, Antonio ; González Carvajal, Ramón; Rocha-Pérez, José Miguel (IEEE, 2019)
Artículo / Artikulua
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 class AB operation to ... -
Subsampling OFDM-based ultrasonic data communication through metallic channels for monitoring of cargo containers
García Oya, José Ramón; Algueta-Miguel, Jose M. ; García Doblado, José; Muñoz Chavero, Fernando; Hidalgo Fort, Eduardo; Baena Lecuyer, Vicente; López Martín, Antonio (IEEE, 2019)
Artículo / Artikulua
An enhanced ultrasonic communication system based on piezoelectric transducers for monitoring of goods in cargo containers is presented. The proposed system consists of several sensors placed inside the container, whose ... -
Super class AB RFC OTA with adaptive local common-mode feedback
Garde Luque, María Pilar ; López Martín, Antonio ; Carvajal, Ramón G.; Ramírez-Angulo, Jaime (Institution of Engineering and Technology, 2018)
Artículo / Artikulua
A super class AB recycling folded cascode operational transconductance amplifier is presented. It employs local common-mode feedback using two matched tuneable active resistors, allowing to adapt the amplifier to different ... -
Super-gain-boosted AB-AB fully differential Miller op-amp with 156dB open-loop gain and 174MV/V MHZ pF/uW figure of merit in 130nm CMOS technology
Paul, Anindita; Ramírez-Angulo, Jaime; Díaz Sánchez, Alejandro; López Martín, Antonio ; González Carvajal, Ramón; Li, Frank X. (IEEE, 2021)
Artículo / Artikulua
A fully differential Miller op-amp with a composite input stage using resistive local common-mode feedback and regulated cascode transistors is presented here. High gain pseudo-differential auxiliary amplifiers are used ...
