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Renesas Electronics Corporation

400ZR Optical Module

Overview

Description

400ZR is an interoperable optical networking standard developed by the Optical Internetworking Forum (OIF) to simplify high‑capacity data transport between data centers. Designed for efficiency, it enables seamless delivery of 400GbE traffic over Data Center Interconnect (DCI) links targeting distances of at least 80km. This helps cloud providers, colocation networks, and service operators scale bandwidth without increasing system complexity. Its compact, low‑power architecture supports both Quad Small Form Factor Pluggable Double Density (QSFP‑DD) and Octal Small Form Factor Pluggable (OSFP) modules, allowing easy integration into routers and switches while reducing power consumption, equipment footprint, and overall network cost.

System Benefits​:

  • 120MHz MCU and high‑performance driver support a compact control architecture, ensuring responsive management of 400ZR optical functions.
  • Efficient synchronous buck converter and PMIC minimize power loss and board area, enabling reliable operation in space‑constrained QSFP‑DD and OSFP modules.

Comparison

Applications

Block Diagram

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16:9JP007JP007JP007ConnectorC o n n e c t o rCONNECTORPDPDPD64G COSA64G COSA64G COSAOpticalOpticalOpticalControlControlControlConnector Arrow.31Connector double arrowConnector ArrowSheet.42Sheet.46Sheet.47Sheet.48Sheet.49Sheet.51Connector Arrow.52Connector LineSheet.56Connector Arrow.57Connector Arrow.58Connector Arrow.59Connector Arrow.60Connector Arrow.61Connector Arrow.63Connector Line.65Connector Line.66Connector Line.67Connector Arrow.68Sheet.70Connector Line.72Connector Arrow.73Sheet.75Connector Arrow.77Sheet.78Sheet.79Sheet.80Sheet.81OscillatorOscillatorOscillatorConnector 1Connector 1.83Connector 1.84Connector 1.85Linear Differential Driver (LDD)Linear Differential Driver (LDD)Linear Differential Driver (LDD)Transimpedance AmplifierTransimpedance Amplifier (TIA)Transimpedance Amplifier (TIA)Sheet.86Sheet.87Sheet.88Sheet.89Sheet.90Buck RegulatorBuck RegulatorBuck Regulator5V<2A5V<2A5V<2A3.3V<3A3.3V<3A3.3V<3A0.53V0.53V0.53V0.75V0.75V0.75V0.9V0.9V0.9V1.8V1.8V1.8VLane x8Lane x8Lane x8Lane x4Lane x4Lane x4Lane x4Lane x4Lane x4Connector.20Connector.19Connector.18Lane x8Lane x8Lane x8Si Photonics ChipSi Photonics ChipSi Photonics ChipMCUMCUMCUMCUSPISPISPI12bit ADC12-bit ADC12-bitADCI2CI2CI2CI2CI2CI2CPMIC 1PMICPMICPMIC 2PMICPMICDSPDSPDSPDual Pol MixerDual Pol MixerDual Pol MixerPM-IQ ModulatorPM-IQ ModulatorPM-IQModulator
Exiting Interactive Block Diagram

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