An asymmetrical bulk-modified composite MOS transistor with enhanced linearity

An asymmetrical bulk-modified composite MOS transistor with enhanced linearity

In this work, an asymmetrical bulk-linearized composite MOSFET is presented, with an enhanced linear range and an equivalent saturation voltage of up to several hundred mV even in weak inversion, allowing to implement large MOS resistors. Some preliminary measurements are presented, as well as 150MΩ...

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Bibliographic Details
Published in:2019 IEEE 10th Latin American Symposium on Circuits & Systems (LASCAS) pp. 49 - 52
Main Authors: Arnaud, Alfredo, Puyol, Rafael, Chacon-Rodriguez, Alfonso, Miguez, Matias, Gak, Joel
Format: Conference Proceeding
Language:English
Published: IEEE 01-02-2019
Subjects:
analog filters
analog integrated circuits
Biomedical measurement
CMOS
Current measurement
Linearity
linearization techniques
MOS resistor
MOSFET
Resistors
Sensors
Stacking
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Summary:In this work, an asymmetrical bulk-linearized composite MOSFET is presented, with an enhanced linear range and an equivalent saturation voltage of up to several hundred mV even in weak inversion, allowing to implement large MOS resistors. Some preliminary measurements are presented, as well as 150MΩ and 200MΩ equivalent resistors simulations, with a linear range up to 1.5V. A low frequency, 40dB gain, fully integrated cardiac sensing channel filter/amplifier is also shown. Taking advantage of the proposed technique, the circuit consumes only 25nA of supply current.
ISSN:2473-4667
DOI:10.1109/LASCAS.2019.8667576