EXHIBIT 23.1

               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS

      We consent to the incorporation by reference in the Registration Statement
(Form S-8 No. 333-81820) pertaining to the Amended and Restated 2001 Incentive
Compensation Plan, the Registration Statement (Form S-8 No. 333-82288)
pertaining to the 1986 Incentive Stock Option Plan and the 1996 Stock Option
Plan, the Registration Statement (Form S-8 No. 333-82286) pertaining to the 2000
Nonstatutory Stock Option Plan and the Registration Statement (Form S-8 No.
333-82282) pertaining to the Amended and Restated 2001 Employee Stock Purchase
Plan of our report dated July 26, 2002, except for Note 13, as to which the date
is August 14, 2002, with respect to the consolidated financial statements and
schedule of Synaptics Incorporated included in the Annual Report (Form 10-K) for
the year ended June 30, 2002.

                                              /s/ Ernst & Young LLP

San Jose, California
September 11, 2002