Community Forums Custom IC Design common mode level in vcvs

Stats

  • Replies 2
  • Subscribers 128
  • Views 716
  • Members are here 0

common mode level in vcvs

paulinho

the vcvs in analoglib is by default fully differential (both input and output is differential). Say if i give an input of 1.5V to both input terminals (vcvs having a gain of 1), and I want the same values at the output, how do I do it. Even though the differential output is 0V, the common mode levels at the output seem to be at some arbitrary level.

  • Dear paulinho,

    paulinho said:
    Say if i give an input of 1.5V to both input terminals (vcvs having a gain of 1), and I want the same values at the output, how do I do it

    Would something like this work in your application?

    Shawn

  • in reply to ShawnLogan

    Isn't the simplest solution to have two vcvs sources with the minus pins all connected to ground? Then have the two + input pins connected to the two input voltages, and the two output + pins will reflect the input pins. It's not really a differential input you want for a controlled source, if I've understood your description properly.

    Andrew

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.