Tetra Semiconductors Ltd.

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Tetra Semiconductors Announces Very Low Power Chipset for 200/400G Ethernet

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Zurich, September 13th, 2018

Tetra Semiconductors Ltd., Zurich, Switzerland today announced the TS2 Chipset for 200G/400G Ethernet SR/LR applications. The chipset combines outstanding performance at a minimum power consumption and offers the cost-effectiveness required to build competitive 200G/400G optical modules.

Tetra Semiconductors’ chipset includes a 4 Channel PAM4 VCSEL Driver, 4 Channel PAM4 TIAs as well as a 4 Channel PAM4 Silicon Photonics driver, all running at 28 Gbaud suitable for 200G and 400G Ethernet/Infiniband solutions. The chipset enables QSFP-DD/OSFP module designs with best in class power consumption of <7 W for the complete 400G module.

All chips are based on the commercially available TS1 chipset for Test & Measurement applications. Circuit optimization and newly designed optical front-ends allow for the integration of the CDR with the optical front-ends onto a single chip resulting in the best possible power and cost saving.

Features included in the chips are:

TST2PAM:
  • 4 Channel PAM-4 CDR with integrated VCSEL Driver
  • 50 Ohm inputs with CTLE and DFE equalization
  • PAM4 VCSEL Driver with individual eye adjustment to overcome possible VCSEL nonlinearities
  • Power consumption of 390 mW/Channel (10 mA Average Current; 10 mA Modulation Current)
TSR2PAM:
  • 4 Channel PAM-4 CDR with integrated TIA
  • PAM4 TIA with gain controlled linear amplifier that includes CTLE and DFE equalization
  • 50 Ohm outputs with pre- and postcursor equalization
  • Power consumption of 430 mW/Channel (300 mVpp output swing)
TSC2PAM:
  • 4 Channel PAM-4 CDR with high output swing of up to 1.4Vpp, enough to drive silicon photonics modulators
  • 50 Ohm inputs with CTLE and DFE equalization
  • 50 Ohm outputs with pre- and postcursor equalization
  • Power consumption of 410 mW/Channel (@ 1 Vpp output swing)

All three chips will be available as Known-Good-Die in Q1 2019.

For further information please visit www.tetra-semi.com or get in touch with us via email: info@tetra-semi.com.