MAX3785 6.25Gbps, 1.8V PC Boar

MAX3785 6.25Gbps, 1.8V PC Board Equalizer

MAX3785 Description

The MAX3785 6.25Gbps equalizer operates from a single 1.8V supply and compensates for transmission-medium losses encountered with FR-4 transmission lines. Optimized for low-voltage, high-density, DC-coupled interconnections between the line card and switch card, the MAX3785 enables a system upgrade path while maintaining a legacy rate of 2.5Gbps to 3.125Gbps. Roughly the size of two 0603 passive components, the MAX3785 easily provides placement and routing flexibility.

The MAX3785 is composed of an equalizer, limiting amplifier, and output driver. For data rates of 3.2Gbps and lower, the MAX3785 equalizes signals for spans up to 40in of FR-4 board material. For data rates up to 6.25Gbps, the MAX3785 compensates for 30in of FR-4 board material. The MAX3785 is coding independent, functioning equally well for 8b/10b or scrambled signals.

The MAX3785 features DC-coupled current-mode logic (CML) data inputs and outputs. It is packaged in a tiny 1.5mm x 1.5mm chip-scale package (USCP™) and a 6-pin TDFN package.

MAX3785 pdf datasheet (6.25Gbps, 1.8V PC Board Equalizer)

MAX3785 Key Features

Single 1.8V Supply

Very Low Power, 60mW

Spans 30in with FR-4 at 6.25Gbps

Operates from 1.0Gbps to 6.4Gbps

Coding Independent, 8b/10b or Scrambled

DC-Coupled CML Inputs and Outputs

Small 1.5mm x 1.5mm Footprint

MAX3785 Applications/Uses

	Double IEEE 802.3ae XAUI
	Double STM-16/OC-48
	HSBI for ≤ 6.4Gbps

MAX3785 Diagram

Typical Application Circuit