Open AccessProceedings Article
Design of high frequency OTA in 130nm CMOS technology with single 1.2V power supply
Bogdan Pankiewicz,Mariusz Madej +1 more
- pp 209-212
TLDR
In this article, a CMOS operational transconductance amplifier (OTA) for low power supply voltage and VHF continuous time filtering applications is described, and a tuning circuit is also discussed.Abstract:
In this paper, a CMOS operational transconductance amplifier (OTA) for low power supply voltage and VHF continuous time filtering applications is described. The input stage of the proposed circuit is based on CMOS inverters. The transconductance of OTA is tuned using the bulk effect of transistors. A tuning circuit is also discussed. A good frequency behavior of the described OTA is obtained due to the lack of internal nodes. In order to enhance a DC voltage gain of the open loop OTA, a negative resistance circuit is employed. This circuit is also tuned. The proposed amplifier was designed and simulated using the UMC (United Microelectronic Corp., Taiwan) 130 nm process with the 1.2 V supply voltage. The OTA was used in the application of a third order Gm - C elliptic filter. SPECTRE simulation results show the cutoff frequency of about 800 MHz and the THD less than − 40 dB for the output voltage up to 0.5 Vpp.read more
Citations
More filters
Journal ArticleDOI
A Statistical Design Approach for a Digitally Programmable Mismatch-Tolerant High-Speed Nauta Structure Differential OTA in 65-nm CMOS
TL;DR: This paper presents a digitally programmable Nauta structure OTA architecture built using digital-to-transconductance converters (DTCs), designed to allow for flexibility in producing digital tuning solutions to the device mismatch problem using NautA OTAs.
Journal ArticleDOI
Comparative Analysis of CMOS OTA
Shireen T. Sheikh,Hemant Lohana +1 more
TL;DR: In this article, the performance analysis of conventional OTA techniques and suggesting the topology, using advanced process technology that can break the previous frequency barrier is a key objective of this paper.
Proceedings ArticleDOI
A Low Voltage Wideband CMOS Operational Transconductance Amplifier for VHF Applications
TL;DR: A low voltage, low power CMOS OTA that can be used in high frequency applications and the comparative analysis of designed OTA at three different process technologies is presented.
Proceedings ArticleDOI
A Low Power CMOS Operational Transconductance Amplifier with Improved CMRR
Nedson J. Maia,Arnaldo del Risco Sanchez,Robson L. Moreno,Tales Cleber Pimenta,Luis H. C. Ferreira +4 more
TL;DR: In this paper, the authors proposed a new low power Operational Transconductance Amplifier (OTA) topology, which achieved a gain of 87.34 dB at 9.65 μW power consumption.
Performance Analysis of CMOS OTA
TL;DR: A Fully differential OTA is designed and analyzed in this paper which has Transconductance of 8ms over GHz Frequency range and worked on supply voltage of 1.4V.
References
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Journal ArticleDOI
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