Abstract
A compact high-speed low-power rail-to-rail class-B buffer amplifier, which is suitable for liquid crystal display applications, is proposed. The amplifiers are biased by each other to reduce the power consumption and the die area. The buffer draws little current while static but has a large driving capability while transient. The circuit achieves the large driving capability by employing simple comparators to sense the transients of the input to turn on the output stages, which are statically off in the stable state. This increases the speed of the circuit without increasing static power consumption too much. An experimental prototype output buffer implemented in a 0.35-μm CMOS technology demonstrates that the circuit can operate under a wide power supply range. Quiescent current of 4 μA is measured. The buffer exhibits the settling time of 1.5 μs for a voltage swing of 0.1 ∼ (VDD − 0.1) V under a 600 pF capacitance load. The area of this buffer is 32 × 109 μm2.
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.
