Title :
A hybrid 3 Gs/s, 6-bit digital to analog converter
Author :
Priatko, Gordon J. ; Thompson, Barry L. ; Kaskey, Jeffrey A.
Author_Institution :
Lawrence Livermore Nat. Lab., Livermore, CA, USA
Abstract :
A hybrid GaAs 3-gigasample-per-second (Gs/s) digital-to-analog converter (DAC) is presented. Five-bit 1-Gs/s operation and peak operating speeds of 3 Gs/s are demonstrated. DC differential and integral linearity are shown to be consistent with 6-bit operation. Sub-500-ps settling times are demonstrated at operating speeds of 1-3 Gs/s. The device has ECL (emitter-coupled logic) level differential inputs and is capable of producing a 1-V output when driven into 50 Ω. The hybrid DAC is implemented with thin-film resistors and commercially available GaAs MESFETs. Power dissipation is approximately 1.5 W. The device has applications in telecommunications, microwave digitally programmable waveform generation, and very-high-resolution graphics display systems
Keywords :
digital-analogue conversion; hybrid integrated circuits; thin film circuits; DC differential; ECL; GaAs; MESFETs; differential inputs; digital to analog converter; hybrid DAC; integral linearity; microwave digitally programmable waveform generation; peak operating speeds; settling times; telecommunications; thin-film resistors; very-high-resolution graphics display; Digital-analog conversion; Gallium arsenide; Linearity; Logic devices; MESFETs; Microwave devices; Microwave generation; Power dissipation; Resistors; Transistors;
Conference_Titel :
University/Government/Industry Microelectronics Symposium, 1989. Proceedings., Eighth
Conference_Location :
Westborough, MA
DOI :
10.1109/UGIM.1989.37326
