Xinyun Technology Launches Low-Cost Integrated CDR Chipsets Optimized for Next Generation Datacom and Telecom Networks

Hangzhou Xinyun Technology Co., Ltd. (hereinafter referred to as XY TECH) has In August 2022 completed the development of its next-generation CDR product family, successfully launched monolithically integrated CDR and trans-impedance amplifier ICs, such as XY5424V for 100G SR4 applications and XY5424 for 100G LR4/CWDM4/PSM4 applications. The XY5424 integrated CDR/TIA product family are single-chip products supporting 4x25/28G dual-rate applications, ideally suited for the ever-increasing market requirements of higher bandwidth, higher speed, smaller size, and lower cost. The launch of these differentiating products follows the successful mass production and volume shipments of its 100% internally-developed CDR product family.

Xinyun Tech’s 100G CDR+TIA products (XY5424 product family) are differentiating, high-quality complete product solutions developed and driven by the goal of supporting 5G and 100G+ high-speed network deployment with domestic IC products. This product family fully supports the construction of Data Center infrastructure in digital transformation, and empowers many major national projects such as the East-to-West Computing Resource Transfer Project. For Xinyun Tech, it also represents an important milestone of product offering addressing both datacom and telecom needs. Since Q2 2022, the XY5424 product family has undergone DVT, 500-hour reliability testing, customer evaluation, and small batch shipments.

Figure 1: 100G LR4/CWDM4/PSM4 & SR4 Transceiver Solutions

Xinyun Tech’s complete IC and OSA solutions significantly simplify the design of miniaturized high-density pluggable modules. With the optimization of other key processes, these complete solutions can greatly enhance product performance, improve reliability, and reduce the overall module power consumption, PCB size, and cost. This series of CDR products can greatly minimize the effects of signal jitter in the communication links. The extensive customer testing and verification demonstrate that the CDR product family of XinYun Tech outperforms the mainstream competing products in key areas. In addition, in terms of product experience, Xinyun Tech’s complete IC and OSA solutions substantially simplify the module development and assembly process, provide greater flexibility to meet application and operational needs, help customers further reduce costs, and achieve performance upgrades and user-friendliness. On the whole, XinYun Tech’s CDR product family is an ideal chipset solution for COB optical modules for 100G LR4/CWDM4/PSM4 & SR4 applications.

The electrical output eye diagram and sensitivity performance of the CDR+TIA integrated chips are shown in Figure 2-3 below:

Figure 2: XY5424 electrical output eye diagram at -11dBm optical input power

Figure 3: XY5424 optical sensitivity test results at various temperatures

Xiaoyong Luo, IC product line Director of Xinyun Tech, stated, "In the past year, with our 100G CDR product family which fully met the requirements of PTN, mid-haul, and backhaul networking equipment, Xinyun Tech, together with our excellent domestic and foreign customers, have participated in the high-efficiency, high-speed and reliable bearer network construction, providing strong support for domestic '5G changes society'. The launch of the CDR product family integrating DML drivers and TIA chips is a testament to Xinyun Tech's focus and success in the research and development of next-generation low-cost 100G solutions. These differentiating product solutions will help Datacom and telecom customers save investment costs and at the same time significantly enhance product performance. Xinyun Tech will continue to focus on developing domestic high-end IC product solutions, and strive to become the best long-term partner of our customers."

Note:

1. CDR: Clock and Data Recovery.
2. DML： Directly Modulated Lasers.
3. TIA： Trans-Impedance Amplifier.

Low-Cost integrated CDR chipsets Information

• XY5924D is a high-performance four-channel CDR with an integrated 25/28Gbps DML driver. The XY5924D chip adopts an advanced eWLB package, which provides low output jitter laser driving current, and the chip power consumption is about 1.7W. The XY5924D chip integrates a four-channel CDR and provides an adaptive input equalization function. The chip output has a built-in flexible de-emphasis adjustment function, which can be adapted to different laser products. In addition, the chip supports 24.3Gbps~28.05Gbps continuous rate adaptive Retime mode, supports the Bypass mode of legacy or non-standard data rates, and supports various data rate requirements such as 100G EDR Infiniband, 100G BASE, OTU4, 32G Fibre Channel, etc.

• XY5424 is a high-performance Four Channel 25G/28Gbps CDR with Integrated TIA. The power consumption of the chip is about 0.85W. The XY5424-BT2 channel spacing is 250um and as the main product, it meets the 100G LR4 and CWDM4 requirements. The XY5424-BT7 channel spacing is 750um, which can be used for traditional Zblock applications to achieve better product performance. This chip supports 24.3Gbps~28.05Gbps continuous rate adaptation and supports various data rate requirements such as 100G EDR Infiniband, 100G BASE, OTU4, and 32G Fibre Channel. The chip is supplied as a bare die, which can meet the low power consumption requirement.