The MAX3815 cable equalizer automatically provides compensation for DVI™, HDMI™, DFP, PanelLink®, and ADC cables. It extends the usable cable distance up to 36 meters. The MAX3815 is designed to equalize signals encoded in the transition-minimized differential signaling (TMDS®) format. The MAX3815 features four CML-differential inputs and outputs (three data and one clock). It provides a loss-of-signal (LOS) output that indicates loss-of-clock signal. The outputs include a disable function or the equalizer can be powered down to conserve power. For direct chip-to-chip communication, the output drivers can be switched to one-half the DVI output specification to conserve power and reduce EMI. Equalization can be automatic or set to manual control for specific in-cable applications. The MAX3815 is available in a 7mm x 7mm, 48-pin TQFP-EP package and operates over a 0°C to +70°C temperature range.
The MAX3815 is a TMDS digital video equalizer that automatically compensates for signal loss in DVI™, HDMI™, DFP, PanelLink®, and ADC cables, extending usable cable distances up to 36 m (up to 50 m with lower‑gauge cable). It features four CML‑differential inputs and outputs, a loss‑of‑signal output, and power‑down capability.
Key sections describe absolute maximum ratings, electrical characteristics, typical operating performance, pin descriptions, layout considerations, and package information. The document also provides application circuits, jitter analysis, and guidance for PCB layout to maximize high‑speed performance.
| Package | 48‑pin TQFP‑EP, 7 mm × 7 mm |
|---|---|
| Operating Temperature Range | 0 °C to +70 °C |
| Supply Voltage (VCC) Range | -0.5 V to +4.0 V |
| Equalizer Performance | Up to 40 dB loss at 825 MHz |
| Power‑Down Current | ≈10 mA |