The AD8123 is a triple differential receiver with adjustable line equalization. It compensates for up to 300 meters of wideband video signal transmission. It features fast rise and fall times and can be adjusted using frequency response gain adjustment pins. Additionally, it compensates for variations in RGB and YPbPr signals and has low output offset voltage and two built-in comparators.
The AD8123 is a triple, high‑speed differential receiver and equalizer designed to compensate transmission losses of UTP and coaxial cables up to 300 m. It uses multiple gain stages summed to approximate the inverse frequency response of the cable, providing low‑noise performance for short‑to‑medium ranges while delivering the high‑gain bandwidth needed for long‑cable equalization.
The device is offered in a 6 mm × 6 mm 40‑lead LFCSP and operates from a +4.5 V to +5.5 V supply. Detailed specifications include peak gain of 55 dB, rise/fall times as low as 4.9 ns over 150 m of Cat‑5, and an operating temperature range of –40 °C to +85 °C. Pin‑out, typical performance curves, and layout recommendations are provided for designers.
| Rise/Fall Time (150 m Cat‑5, 2 V step) | 4.9 ns |
|---|---|
| Rise/Fall Time (300 m Cat‑5, 2 V step) | 8.0 ns |
| Input Voltage Range | +3.0 V |
| Operating Temperature Range | ‑40 °C to +85 °C |
It can compensate UTP or coaxial cables up to 300 meters in length.
The typical rise/fall time is 4.9 ns.