A bit-stream digital-to-analog converter with 18-b resolution

• Published in: IEEE journal of solid-state circuits Vol. 26; no. 12; pp. 1757 - 1763
• Main Authors: Kup, B.M.J., Dijkmans, E.C., Naus, P.J.A., Sneep, J.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.12.1991; Institute of Electrical and Electronics Engineers
• Subjects: Analog circuits; Applied sciences; Circuit noise; Circuit properties; Crosstalk; Digital modulation; Digital-analog conversion; Dynamic range; Electric, optical and optoelectronic circuits; Electronic circuits; Electronics; Exact sciences and technology; Noise reduction; Noise shaping; Quantization; Semiconductor device noise; Signal convertors; Operational amplifier; AD converter; Switched capacity; Circuit design; Integrated circuit; Theoretical study; Performance; BICMOS technology
• ISSN: 0018-9200; 1558-173X
• DOI: 10.1109/4.104166

A two-channel differential 18-b bit-stream digital-to-analog converter implemented in a 2.5- mu m BiCMOS process with 7.3-mm/sup 2/ chip area is described. The circuit contains two identical 1-b D-to-A conversion channels on one single chip. Each channel consists of a digital input part, a switched-capacitor D-to-A network, and two high-performance operational amplifiers. Total harmonic distortion plus noise is better than -102 dB. The dynamic range is more than 108 dB, giving a true 18-b resolution. Output operational-amplifier distortion is below 120 dB at full-scale signal. System design considerations, implementation, and measured results of the IC are discussed.< >