EXHIBIT 23.1 CONSENT OF INDEPENDENT AUDITORS We consent to the reference to our firm under the caption "Experts" and to the use of our report dated January 11, 2000, in Amendment No. 1 to the Registration Statement (Form S-1 No. 333-94853) and related Prospectus of Silicon Laboratories Inc. filed with the Securities and Exchange Commission on or about February 24, 2000. /s/ ERNST & YOUNG LLP Austin, Texas February 23, 2000