The DS280DF810 is an eight-channel
multi-rate Retimer with integrated signal conditioning. It is used to extend the
reach and robustness of long, lossy, crosstalk-impaired high-speed serial links
while achieving a bit error rate (BER) of 10-15 or less.Each channel of the DS280DF810
independently locks to serial data rates in a continuous range from 20.2Gbps to
28.4Gbps or to any supported sub-rate (÷2 and ÷4), including key data rates such as
10.1376Gbps, 10.3125Gbps, and 12.5Gbps, which allows the DS280DF810 to support
individual lane Forward Error Correction (FEC) pass-through.Integrated physical AC coupling
capacitors (TX and RX) eliminate the need for external capacitors on the PCB. The
DS280DF810 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 DS280DF810 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 an excellent choice for front-port optical module applications to
reset the jitter budget and retimer the high-speed serial data. The DS280DF810 implements 2x2 cross-point on each channel pair, providing
the host with both lane crossing and fanout options.The DS280DF810 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 and checker
allow for in-system diagnostics.
