LaberCRef - lEEEJOURNAL SOLID-STATE OF CIRCUITS,...

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lEEEJOURNALOF SOLID-STATE CIRCUITS,VOL.SC-22,NO.2, APRIL1987 181 Design Considerations for a High-Performance 3-pm CMOS Analog Standard-Cell Library CARLOS A. LABER, MEMBER, IEEE, CHOWDHURY F. RAHIM, MEMBER, IEEE, STEPHEN F. DREYER, GREGORY T. UEHARA, MEMBER, IEEE, PETER T. KWOK, MEMBER, IEEE, AND PAUL R. GfZAY, FELLOW, IEEE ,4.rtract —Severaf design aspects of a high-performance analog cell library implemented in 3-~m CMOS are deseribed, including an improved centraJ biasing scheme, a new circuit for high-swing caseode biasing, an impact ionization shielding technique, and a fanrily of operational trans - conductaoce amplifiers (OTA’S) including a precision low offset-voltage amplifier utilizing lateral bipolar transistors. I. INTRODUCTION T HE application of standard-cell methodology to the design of digital integrated circuits has greatly re- duced their design time and associated engineering costs. While the same potential advantages are available in the mixed analog–digital domain, the application of stan- dard-cell-based design methodology in the analog domain is more difficult because of the much wider range of applications encountered, the wider variety of types of cell functions required, and the tendency of analog blocks to interact with one another in a variety of ways, some difficult to predict a priori. This variety of different perfor- mance levels and types of functions required makes the SyS@IMldC application of a standard-cell-based methodol- ogy I.O high-performance mixed analog and digital designs a challenging task. This paper will describe several circuit design ap- proaches intended to alleviate some of the problems men- tioned above, and to improve circuit robustness in the presence of wide process parameter variations found in different silicon foundries. The techniques have been ap- plied to a general-purpose CMOS analog cell library, de- scribed in general terms at the end of the paper. This library consists of a variety of analog and digital standard cells intended for application in IC’S for high-performance telecommunications systems, precision data-acquisition and instrumentation systems, and general analog pro- cessing. In Section II, the overall characteristics of the cell Manuscript received Se tember 9, 1986; revised January 5, 1987. & C. A. Laber, C. F. R m, and S. F. Dreyer are with Micro Linear Corporation, San Jose, CA 95131. G. T. LJehara was with Micro Linear Corporation, San Jose, CA 95131 He is now with the Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, CA 94720. P. T. Kwok was with Micro Linear Corporation, SamJose, CA 95131. He is now with Exar Corporation, Sunnyvale, CA 94088. P. IR. Gray is with the Department of Electrical Engineering and Computer Scievces, University of California, Berkeley, CA 94720.
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This note was uploaded on 09/19/2010 for the course EE 7326 taught by Professor Jimhellums during the Spring '08 term at University of Texas at Dallas, Richardson.

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LaberCRef - lEEEJOURNAL SOLID-STATE OF CIRCUITS,...

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