Abstract
A CMOS current differencing transconductance amplifier (CDTA) with high transconductance has been proposed. The transconductance (gm) of CDTA is generally increased either by increasing the biasing current IB or by increasing the size of transistors used in differential pair and current mirror structures. The first technique leads to higher power dissipation and limited range of transconductance while the second limits the input/output swing and bandwidth of CDTA due to higher parasitic capacitances. In the proposed design of CDTA, a cross coupled PMOS active load has been used in place of conventional PMOS active load. The cross coupled PMOS active load forms a positive feedback which results in higher transconductance, wider tuning range and less power consumption without any limitations on input/output swing and bandwidth of the CDTA. Mentor Graphics Eldo simulation tool has been used to verify the performance of proposed CDTA with TSMC 0.18 µm technology parameters. A voltage/current mode oscillator circuit of third order has been designed by proposed CDTA.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
