GS2984 Datasheet, PDF (10/20 Pages) Gennum Corporation – GS2984 Adaptive Cable Equalizer

VCC
CM_SET
R
R_L
OUT
IN
R_L
OUT
IN
I
Figure 3-6: CM_SET
VCC
GAIN_SEL
Figure 3-7: GAIN_SEL
4. Detailed Description
The GS2984 is a high-speed BiCMOS IC designed to equalize serial digital signals.
The GS2984 can equalize 3Gb/s, HD and SD serial digital signals, and will typically
equalize 140m of Belden 1694A cable at 2.97Gb/s, 200m at 1.485Gb/s and 400m at
270Mb/s.The GS2984 is powered from a single +3.3V power supply and consumes
approximately 195mW 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.
GS2984 Adaptive Cable Equalizer
Data Sheet
50985 - 3
March 2010
10 of 20