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DS250DF810

SNLS495A – SEPTEMBER 2015 – REVISED JANUARY 2016

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5 Description con't.

Integrated physical AC coupling capacitors (TX and RX) eliminate the need for external capacitors on the PCB.

The DS250DF810 has a single power supply and minimal need for external components. These features reduce

PCB routing complexity and BOM cost.

The advanced equalization features of the DS250DF810 include a low-jitter 3-tap transmit finite impulse

response (FIR) filter, an adaptive continuous-time linear equalizer (CTLE), and an adaptive decision feedback

equalizer (DFE). This enables reach extension for lossy interconnect and backplanes with multiple connectors

and crosstalk. The integrated CDR function is ideal for front-port optical module applications to reset the jitter

budget and retime the high-speed serial data. The DS250DF810 implements 2x2 cross-point on each channel

pair, providing the host with both lane crossing and fanout options.

The DS250DF810 can be configured either via the SMBus or through an external EEPROM. Up to 16 devices

can share a single EEPROM. A non-disruptive on-chip eye monitor and a PRBS generator/checker allow for in-

system diagnostics.