GENERAL DESCRIPTION

The AD8122 is a high speed, triple differential receiver and equalizer that compensates for the transmission losses of UTP cables up to 300 meters in length and coaxial cables up to 200 meters in length. Various gain stages are summed to best approximate the inverse frequency response of the cable. Each channel features a high impedance differential input with high rejection of common-mode (CM) signals that is ideal for interfacing directly with the cable.

FEATURES

Compensates cables up to 300 meters for wideband video

60 MHz equalized BW at 300 meters of UTP cable

120 MHz equalized BW at 150 meters of UTP cable

Fast time domain performance

70 ns settling time to 1 at 300 meters of UTP cable

7 ns rise/fall times with 2 V step at 300 meters of UTP cable

3 frequency response gain adjustment pins

High frequency peaking adjustment (VPEAK)

Output low-pass filter cutoff adjustment (VFILTER)

Broadband flat gain adjustment (VGAIN)

Selectable for UTP or coaxial compensation

DC output offset adjustment pin (VOFFSET)

Low output offset voltage: ±4 mV at G = 1

Compensates both RGB and YPbPr

2 on-chip comparators with hysteresis can be used

for common-mode sync pulse extraction

Available in 40-lead, 6 mm × 6 mm LFCSP

APPLICATIONS

Keyboard-video-mouse (KVM)

Digital signage

RGB video over UTP cables

Professional video projection and distribution

HD video

Security video