This paper presents the analysis of hybrid cascode compensation scheme, merged Ahuja and improved Ahuja style compensation methods, which is used in two-stage CMOS operational transconductance amplifiers (OTAs). The open loop signal transfer function is derived to allow the accurate estimation of the poles and zeros. This analytical approach shows that the non-dominant poles and zeros of the hy...

The influence of different gate-layout geometries on a cascode nMOSFET’s transit frequencywas studied. Four cascode nMOSFET transistors were fabricated using different interdigitized gate layout geometries. Furthermore, a conventional cascode transistor was fabricated in order to compare it with the proposed interdigitized layouts. The transistors were measured on-wafer and the maximum transit ...

An eighth-order switched-current bandpass delta-sigma modulator is described. Simulations indicate that our 1.2pm CMOS implementation will achieve a S N R of 90dB in the band 10 MHzk150 KHz when clocked at 40 MHz. The modulator makes use of a switched-current resonator based on the N-path technique and the resonator employs regulated-cascode current-copiers to simultaneously achieve high speed ...

In this research paper, Simulation and Analysis of innovative folded cascode Operational Amplifier based on carbon nanotubes (CNT) has been performed using 45 nm technology. DC voltage gain, average power, bandwidth and output resistance have been computed. CNT based folded cascode Op Amp results in high performance with the increase of CNTs. For example, the increase in DC gain is 41.48% in pC...

This work presents the design of an inductively source degenerated CMOS differential common source cascode Low Noise Amplifier (LNA) operating at 2 GHz frequency. An inductor is added at the drain of the main transistor to reduce the noise contribution of the cascode transistors. Another inductor connected at the gate of the cascode transistor and capacitive cross-coupling are strategically com...

This work presents an ultra-low-voltage ultra-low-power weak inversion composite MOS transistor. The steady state power consumption and the linear swing signal of the composite transistor are comparable to a single transistor, whereas presenting very high output impedance. This work also presents two interesting applications for the composite transistor; a 1:1 current mirror and an extremely lo...