GRAYCHIP, INC.

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JUNE 22, 1998

GC3021 MIXER AND CARRIER REMOVAL CHIP

DATA SHEET

This document contains information which may be changed at any time without notice

6.5

QAM DEMODULATOR

The GC3021 chip can be used for carrier removal high speed digital modems. Examples include

digital microwave links and HDTV systems. For details in using the GC3021 chips in a digital modem contact

GRAYCHIP for the application note: BUILDING DIGITAL PSK AND QAM DEMODULATORS, August 17,

1994.

6.6

DIAGNOSTICS

Eight diagnostic tests are defined on the following pages. Note that the CIN input to the chip must

be grounded.