An eighth-order CMOS lowpass filter with 30-120 Mhz tuning range and programmable boost

An eighth-order CMOS lowpass filter with 30-120 Mhz tuning range and programmable boost

A CMOS lowpass filter with programmable cutoff frequency is presented. The architecture is gm/C type with the gm controlled through a resistor servo approach. The wide tuning range is achieved by exploiting a dual loop control over a degenerated differential pair. This filter, implemented in a 0.25...

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Bibliographic Details
Published in:Proceedings of the 26th European Solid-State Circuits Conference pp. 133 - 136
Main Authors: Bollati, G., Marchese, S., Castello, R., Demicheli, M.
Format: Conference Proceeding
Language:English
Published: IEEE 2000
Subjects:
Circuit optimization
CMOS technology
Dynamic range
Filters
Frequency
Resistors
Tail
Transconductance
Transconductors
Voltage
Online Access:Get full text
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Summary:A CMOS lowpass filter with programmable cutoff frequency is presented. The architecture is gm/C type with the gm controlled through a resistor servo approach. The wide tuning range is achieved by exploiting a dual loop control over a degenerated differential pair. This filter, implemented in a 0.25 µm 2.5V CMOS technology, dissipates 120mW with fc=120MHz and has a die area of 0.23mm 2 .