A CMOS Micro-power, Class-AB “Flipped” Voltage Follower using the quasi floating-gate technique
Circuito CMOS seguidor de voltaje “rotado” de micro-potencia con salida clase AB usando Técnicas de Compuerta Cuasi-flotante
DOI:
https://doi.org/10.15446/ing.investig.v37n2.62625Keywords:
CMOS analog integrated circuit design, quasi-floating gate circuits, low voltage, micro-power (en)Diseño de circuitos integrados CMOS analógicos, compuerta flotante, bajo voltaje, micro-potencia (es)
This paper presents the design and characterization of a new analog voltage follower for low-voltage applications. The main idea is based on the “Flipped” Voltage Follower and the use of the quasi-floating gate technique for achieving class AB operation. A test cell was simulated and fabricated using a 0,5 μm CMOS technology. When the proposed circuit is supplied with VDD = 1,5 V, it presents a power consumption of only 413 μW. Measurement and experimental results show a gain bandwidth product of 10 MHz and a total harmonic distortion of 1,12 % at 1 MHz.
En este trabajo se presenta el diseño y caracterización de un nuevo seguidor de voltaje analógico para aplicaciones de bajo voltaje. La idea principal aquí desarrollada, está basada en el Seguidor de Voltaje “Volteado” y el uso de técnicas de compuerta casiflotante para lograr un funcionamiento de clase AB. Usando una tecnología CMOS de 0.5 μm, se simuló y se fabricó una celda de prueba. Cuando el circuito propuesto se alimenta con VDD = 1,5 V, este presenta un consumo de potencia de tan solo 413 μW. Las mediciones y los resultados experimentales muestran un producto ganancia-ancho de banda de 10 MHz y una distorsión harmónica total de 1,12 % a 1 MHz.
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Copyright (c) 2017 Juan Jesus Ocampo-Hidalgo, Iván Vázquez-Álvarez, Sergio Sandoval-Perez, Rodolfo Garcia-Lozano, Marco Gurrola-Navarro, Jesus Ezequiel Molinar-Solis

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