ML4039EML 400G BERT with EML

4-Channel | 56 GBaud PAM4 & NRZ | Bit Error Ratio Tester ML4039E 400G BERT PAM4 / NRZ | Integrated EML Laser Driver |
  • DataRates:23–29&46–58Gbps
  • Ability to tune the bit rate in steps of 100 kbps and find the RX PLL locking margin.
  • Independent control of inner eye levels
  • Up to 1.4 Vpp output swing single ended supports Gray coding and polarity inversion
  • Adaptive DFE and FFE with reflection canceller.
  • AGC
  • SNR monitoring over time.
  • PAM histogram monitor.
  • PAM slicer threshold adjustable.

The ML4039EML is a full featured 400G BERT that can be configured as a four-channel PAM4 56 GBaud or four-channel NRZ 56 Gbps lanes. Also, half rates around 28 GBd are supported.

The transmitters Support all standard test patterns mandated by IEEE and OIF such as PRBS13Q, SSPRQ, PRBS31Q, etc…
It is also possible to program the TX to output a user-defined pattern of 16384 UI maximum size The transmitters are single-ended with swing up to 1400 mVpp to enable driving EML-based optics.

The error detectors are differential pairs with adaptive front-end signal conditioning.

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