Differential Voltage (ΔV) Comparator with Variable Channel-Size MOSFET

Yasuhiro KOSASAYAMA  Yutaka ARIMA  Masashi UENO  Masafumi KIMATA  Kana HIMEI  Tanemasa ASANO  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E87-A   No.2   pp.357-363
Publication Date: 2004/02/01
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
VS-MOS,  VT-INV,  variable,  channel-size,  comparator,  

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This paper describes the operation and the test results of a novel comparator, called a differential voltage (ΔV) comparator, which detects the difference between two input signal voltages. This comparator utilizes variable threshold voltage inverters (VT-INVs) which can change a logic threshold continuously using a variable channel size MOSFETs (VS-MOSs). The circuit configuration is very simple, and has the potential to achieve high integration and low power consumption in mixed signal system LSIs.