A highly linear wide range continuous tuning CMOS OTA

This paper introduces a new operational transconductance amplifier (OTA) that maintains a highly linear wide continuous tuning range and wide frequency response range, enabled by splitting linear voltage-to-current conversion and tuning into two different blocks. The input differential pair assures...

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Bibliographic Details
Published in2007 7th International Conference on ASIC pp. 588 - 591
Main Authors Shu-Xiang Song, Guo-Ping Yan, Hua Cao
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2007
Subjects
Analog integrated circuits
Circuit optimization
CMOS integrated circuits
CMOS process
Differential amplifiers
Frequency response
Mirrors
operational amplifier
Operational amplifiers
Transconductance
Transconductors
tunable transconductors
Tuning
Voltage
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Summary:This paper introduces a new operational transconductance amplifier (OTA) that maintains a highly linear wide continuous tuning range and wide frequency response range, enabled by splitting linear voltage-to-current conversion and tuning into two different blocks. The input differential pair assures a wide input voltage swing via a fixed bias current, and a programmable-gain current amplifier working in saturation region can assure over three decades Gm tuning range and 119 MHz bandwidth. With plusmn1.5 V supply voltages, HSPICE simulation results using TSMC 0.35-mum CMOS process model confirm the expected good performance of the proposed OTA.
ISBN:1424411319
9781424411313
ISSN:2162-7541
2162-755X
DOI:10.1109/ICASIC.2007.4415699