Pedro Toledo

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A self-biased current reference based on the MOSFET Zero Temperature Coefficient (ZTC) condition is presented. It can be implemented in any CMOS process and it provides a simple alternative to design a reference current suitable for low TC biasing. This topology was designed in a 0.18 μm process to generate 5 μA under a supply voltage from 1.4V to 1.8(More)
A 0.7 V supply voltage fully differential first order GZTC-C filter is herein proposed. The GZTC-C filter definition is used in this paper as a Transconductance-Capacitor filter (Gm-C) in which its gm stage is biased exactly on transconductance zero-temperature (GZTC) bias condition. This special bias point has all necessary conditions to design MOSFET(More)
A low-voltage high-PSRR CMOS voltage reference operating with picowatt power consumption is presented. The voltage reference is generated from the threshold voltage (V<sub>T</sub>) difference of two transistors biased in weak inversion. The V<sub>T</sub> difference is achieved through its dependence with the transistor dimensions. The high-PSRR is obtained(More)
The continuous scaling of CMOS devices has required the consequent reduction of the supply voltages. There is a need for analog and RF circuits able to operate under at supplies lower than 0.5 V. This paper presents a voltage reference based on the MOSFET zero-temperature condition (ZTC) that operates with a low 0.5 V supply. The circuit is composed by a(More)
The necessary conditions to design MOSFET transconductors with low temperature dependence are analysed and defined in this paper. Transconductors, or Gm circuits, are fundamental blocks used to implement adjustable filters, multipliers, controlled oscillators, amplifiers and a large variety of analog circuits. Temperature stability is a must in such(More)