Programmable analog circuits yield single-chip sinusoidal oscillators

摘要

Programmable-logic devices provide a popular method of implementing complex functions in digital designs. Although manufacturers don't yet offer analog circuits whose complexity compares to VLSI digital circuits, field-programmable analog circuits are enjoying extensive use in signal-conditioning and filtering applications. Based on CMOS-operational-transconductance and switched-capa-citor amplifiers, these devices offer a convenient approach to relatively complex design problems.