BENCHMARQ MICROELECTRONICS INC

Q: Mar 31 1998

FY: Dec 31 1997

FY: Dec 31 1997

Q: Sep 30 1997

Q: Jun 30 1997

Q: Mar 31 1997

FY: Dec 31 1996

Q: Jun 30 1996

Q: Sep 30 1996

Q: Aug 13 1996

5,7

5,7

5,7

5,7

Certification of termination of registration of a class of securities (Section 12(g))

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Definitive Proxy Statement

AMVESCAP PLC \GA\

AMVESCAP PLC \GA\

AMVESCAP PLC \GA\

SEVIN L J

PHIPPS CHARLES H

UNITRODE CORP

FMR CORP

WEST HIGHLAND CAPITAL INC/LHG/WHP/PB/BP

UNITRODE CORP

SEVIN L J

NICHOLAS APPLEGATE CAPITAL MANAGEMENT

INVESCO PLC

WELLINGTON MANAGEMENT CO LLP

FMR CORP

PUTNAM INVESTMENTS INC

DRIEHAUS CAPITAL MANAGEMENT INC

PHIPPS CHARLES H

SEVIN L J

FMR CORP