all kind of integrated circuit include:
Analog decives
National Semiconductor
MICROSEMI
TEXAS INSTRUMENTS
burr-brown
INTERSIL
HARRIS
ATMEL
DATEL
CYPRESS
WHITE ELECTRONIC DESIGNS
MOTOROLA
SGS-THOMSON
IDT
INTEL
AMD
LATTICE
ASI
AHA
XILINX
ERICSSON
MINI-CIRCUITS
HOLT
ASI
M/A-COM
LUMILEDS
etc
All kinds of electronic component, integrated circuit