MOSFET - Current Mirror Explained

In this video, what is Current Mirror, the use of the Current Mirror circuit, and the design of the Current Mirror Circuit using MOSFET is explained. Timestamps: 0:00 Introduction 0:30 Why Current Mirrors are used? 2:11 MOSFET Current Mirror Circuit (NMOS Current Mirror) 7:18 Effect of Channe Length Modulation on Current Mirror 10:24 PMOS Current Mirror and Current Steering Circuit 14:00 Current Mirror as Active Load What is Current Mirror: The current mirror is an analog circuit that senses the reference current and generates the copy or number of copies of the reference current, with the same characteristics. The replicated current is as stable as the reference current source. The replicated current could be the same as the reference current (Icopy = Iref), or it could be either multiple or fraction of the reference current. (Icopy = N*Iref or Icopy = (1/N)*Iref) In the video, how to generate the multiple or the fraction of the reference current using the MOS Current Mirror is explained in detail. Why Current Mirrors are used? Current Mirrors are particularly useful in the integrated circuits, for biasing the amplifiers. In integrated circuits, one stable current source is fabricated within IC, and using the current mirror the multiple copies of the stable current source is generated (which can be used to bias the amplifiers) For notes, check this link: https://www.allaboutelectronics.org/what-is-current-mirror-mosfet-current-mirror-explained/ The link for the other useful videos related to MOSFET: 1) MOSFET Biasing: Enhancement Type MOSFET Biasing Explained https://youtu.be/Ae8L9-WOiVE 2) MOSFET Channel Length Modulation https://youtu.be/qFbdsLm5mvI 3) MOSFET Small Signal Model: https://youtu.be/utBRWK4GmmE 4) MOSFET Amplifier with Active Load: https://youtu.be/IOCK41RNpGs 5) MOSFET- Cascode Amplifier https://youtu.be/uFxXgDCLhGw This video is helpful to all the students of science and engineering for understanding what is Current Mirror Circuit, why it is used, and how it can be designed using the MOSFET. #ALLABOUTELECTRONICS #MOSFET #CurrentMirror #MOSCurrentMirror -------------------------------------------------------------------------------------------------- Follow my second channel: https://www.youtube.com/channel/UCGA2TO8ylVqFHpucwn_6Jlw Official Website: https://www.allaboutelectronics.org Follow me on Facebook: https://www.facebook.com/ALLABOUTELECRONICS/ Follow me on Instagram: https://www.instagram.com/all_about.electronics/ -------------------------------------------------------------------------------------------------- Music Credit: http://www.bensound.com