GS2974A HD-LINX™ III Adaptive Cable Equalizer

Data Sheet

42216 - 3

January 2009

9 of 16

4. Detailed Description

The GS2974A is a high speed BiCMOS IC designed to equalize serial digital signals.

The GS2974A can equalize both HD and SD serial digital signals, and will typically

equalize 120m of Belden 1694A cable at 2.97Gb/s, 200m at 1.485Gb/s and 350m at

270Mb/s.The GS2974A is powered from a single +3.3V power supply and consumes

approximately 215mW of power.

4.1 Serial Digital Inputs

The serial data signal may be connected to the input pins (SDI/SDI) in either a

differential or single-ended configuration. AC-coupling of the inputs is recommended,

as the SDI and SDI inputs are internally biased at approximately 1.8V.

Figure 3-3: Output Circuit

Figure 3-4: MUTE and BYPASS Circuits

Figure 3-5: CD Circuit

50

50

SDO

SDO

MUTE,

BYPASS

CD