Kasemsuwan, Varakorn

Preferred name

Kasemsuwan, Varakorn

Alternative Name

Kasemsuwan, V.

Kasemsuwan, Varakom

Main Affiliation

School of Engineering

Email

varakorn.ka@kmitl.ac.th

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Low voltage class AB current differencing buffered amplifier (CDBA)
(2011-12-01)
Kanjanop, Arnon
;
Kasemsuwan, Varakorn
This paper presents a low voltage class AB current differencing buffered amplifier (CDBA). The circuit is developed based on two low voltage current mirrors and voltage follower. In the design, dynamic threshold voltage MOSFET (DTMOS) is employed as core devices. The proposed circuit is designed using a 0.13 m CMOS technology and can operate under the supply voltage of 0.7 V. The simulation results show the impedance at ports p, n, z and w of 16.89, 15.99, 102.4 k, and 15.56, respectively. The current transfer ratio i <inf>z</inf>/i <inf>p</inf>, i <inf>z</inf>/i <inf>n</inf> and voltage transfer ratio v <inf>w</inf>/v <inf>z</inf> are found to be close to one (i <inf>z</inf>/i <inf>p</inf>=0.998, i <inf>z</inf>/i <inf>n</inf>=0.996 and v <inf>w</inf>/v <inf>z</inf>=0.995) with the bandwidths of 460 MHz, 522 MHz and 172 MHz, respectively. © 2011 IEEE.