Design and implementation of a V-f converter using FPAA

Abstract

Voltage-to-frequency converters convert an input analog voltage to square waves at frequencies that are accurately proportional to the analog quantity. They are built into long-term high-precision integrators, digital voltmeters and two-wire high-noise-immunity digital transmission. The presented voltage-to-frequency converter is designed and implemented as an integrated analog IP core using Anadigm/sup /spl reg// FPAAs. As the physical platform, the FPAA architecture is built on a natural precision, generic form, and the switching fabric of a CMOS-based switched-capacitor (SC) network.