Background/Objectives: The main objective was to design a CMOS Operational Transconductance Amplifier (OTA) for biomedical applications and high speed transmission with an operating voltage 0.4 V. Methods/Statistical Analysis: In this paper we have proposed an OTA using bulk driven technique. The transistors are working in weak-inversion. The design was simulated using conventional transistors....

A fast settling multipath CMOS OTA for high speed switched capacitor applications is presented here. With the basic topology similar to folded-cascode, bandwidth and DC gain of the OTA are enhanced by adding extra paths for signal from input to output. Designed circuit is simulated with HSPICE using level 49 parameters (BSIM 3v3) in 0.35μm standard CMOS technology. DC gain achieved is 56.7dB an...

The article discusses the design method of operational trans-conductance amplifier-C(OTA-C) filter based on the prototype of LC filter. It gives the OTA circuit used in the filter. And it makes a detailed analysis on characteristics of OTA. A third order OTA-C filter is presented. Its cut-off frequencies can be tuned by the bias DC current of OTA. The filter is easy to integrate. The proposed O...

A fast settling multipath CMOS OTA for high speed switched capacitor applications is presented here. With the basic topology similar to folded-cascode, bandwidth and DC gain of the OTA are enhanced by adding extra paths for signal from input to output. Designed circuit is simulated with HSPICE using level 49 parameters (BSIM 3v3) in 0.35 um standard CMOS technology. The DC gain achieved is 56.7...

In this work, we propose a degraded transistor-based circuit degradation simulation method to investigate the degradation effect in complementary metal-oxide semiconductor (CMOS) biomedical devices. The method is demonstrated on an operational transconductance amplifier and capacitor (OTA-C)-based CMOS filter structure. First, we simulate the degradation of the symmetrical CMOS OTA by determini...

This paper presents the Design of low transconductance Operational Transconductance Amplifier (OTA) in 0.25μm CMOS technology. For bio-potential signal which is very weak in amplitude and very low in frequency. To capture this signal a OTA with transconductance in nanoSimens for Gm-C application required. with recent year the MOS technology is placing in to nanometer. The design of OTA in this ...

This paper presents an optimized methodology to folded cascode operational transconductance amplifier (OTA) design. The design is done in different regions of operation, weak inversion, strong inversion and moderate inversion using the gm/ID methodology in order to optimize MOS transistor sizing. Using 0.35μm CMOS process, the designed folded cascode OTA achieves a DC gain of 77.5dB and a unity...

The design of tunable operational transconductance amplifier with wide linear range has become increasingly challenging with the scaling in the power supply voltage. Use of control voltage for the purpose of tunning often results in narrow linear range. In recent years the use of voltage as a control parameter has even become more difficult with the reduced supply voltage environment. In this p...

An ultra-low power OTA-C bandpass filter is presented in this paper. An 1-150 Hz 4-th order OTC-C bandpass filter is design which is suitable for ECG application. A subthreshold region OTA is designed with current cancellation technology to achieve a very small transconductance. The OTA-C filter is design with TSMC 0.18μm CMOS process. The MIM capacitor is used in this design. The supply of the...