The MAX3785 6.25Gbps equalizer operates from a single
1.8V supply and compensates for transmission-medium
losses encountered with FR4 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 FR4 board material. For data rates up to
6.25Gbps, the MAX3785 compensates for 30in of FR4
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.
Key Features
Applications/Uses
Single 1.8V Supply
Very Low Power, 60mW
Spans 30in with FR4 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
Double IEEE 802.3ae XAUI
Double STM-16/OC-48
HSBI for ≤ 6.4Gbps
Key Specifications:
Equalizers (Cable and Circuit Board)
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