Title :
A 10-bit video BiCMOS track-and-hold amplifier
Author :
Nayebi, Mehrdad ; Wooley, Bruce A.
Author_Institution :
Center for Integrated Syst., Stanford Univ., CA, USA
fDate :
12/1/1989 12:00:00 AM
Abstract :
A 1.2-μm VLSI BiCMOS technology has been used to implement a monolithic video track-and-hold amplifier that settles to an accuracy of 10 b in 15 ns. This level of performance is competitive with hybrid track-and-hold circuits and surpasses previously reported monolithic implementations by nearly two orders of magnitude. The amplifier´s design is based on a closed-loop topology incorporating two BiCMOS folded-cascode gain stages, an NMOS sampling switch, and a BiCMOS switch driver with 1-ns transitions between ±4 V. The circuit operates from ±5-V power supplies and is capable of driving a 50-Ω load with ±1-V swings. For a fully differential implementation, the power dissipation is 1.2 W. The amplifier can be integrated either as a stand-alone track-and-hold circuit or as the front end of an analog-to-digital conversion system for video and high-speed instrumentation applications
Keywords :
BIMOS integrated circuits; VLSI; differential amplifiers; linear integrated circuits; sample and hold circuits; video amplifiers; -5 V; 1.2 W; 1.2 micron; 10 bit; 5 V; ADC front end application; BiCMOS switch driver; BiCMOS technology; NMOS sampling switch; VLSI; closed-loop topology; folded-cascode gain stages; fully differential implementation; high-speed instrumentation applications; monolithic implementations; track/hold amplifier; video BiCMOS; BiCMOS integrated circuits; Circuit topology; Driver circuits; MOS devices; Power amplifiers; Power supplies; Sampling methods; Switches; Switching circuits; Very large scale integration;
Journal_Title :
Solid-State Circuits, IEEE Journal of
