DS320PR822 Series

PCIe® 5.0, 32-Gbps, 8-channel linear redriver with four 2x2 crosspoint multiplexers

Catalog

PCIe® 5.0, 32-Gbps, 8-channel linear redriver with four 2x2 crosspoint multiplexers

Part	Supplier Device Package	Input	Operating Temperature [Max]	Operating Temperature [Min]	Applications	Type	Mounting Type	Number of Channels	Capacitance - Input	Data Rate (Max)	Package / Case	Delay Time	Signal Conditioning	Voltage - Supply [Max]	Voltage - Supply [Min]	Output
Texas Instruments DS320PR822NJXT	64-WQFN (5.5x10)	Differential	85 °C	-40 °C	PCIe	Buffer ReDriver	Surface Mount	4 x 2:2	1.6 pF	32 Gbps	64-WFQFN Exposed Pad	0.1 ns	Input Equalization	3.6 V	3 V	Differential

Catalog

PCIe® 5.0, 32-Gbps, 8-channel linear redriver with four 2x2 crosspoint multiplexers

Key Features

• Linear redriver supporting PCIe 5.0, CXL 2.0, UPI 2.0 up to 32 GbpsSupports most ac coupled interfaces including DP, SAS, SATA, XFIProvides four 2x2 Crosspoint mux functionCTLE boosts up to 22 dB at 16 GHzUltra-low latency of 100 psLow additive random jitter of 75 fs for PRBS dataExcellent return loss of −10 dB at 16 GHzSingle 3.3 V supplyInternal voltage regulator provides immunity to supply noiseLow active power of 160 mW per channelNo heat sink requiredPin-strap, SMBus or EEPROM programmingAutomatic receiver detection for PCIe use casesProtocol agnostic linear redriver allows seamless support for PCIe link trainingSupport for x2, x4, x8, x16, x24 bus width with one or multiple DS320PR 822Temperature range of –40 °C to 85 °C5.5 mm × 10 mm, 64 pin WQFN packageLinear redriver supporting PCIe 5.0, CXL 2.0, UPI 2.0 up to 32 GbpsSupports most ac coupled interfaces including DP, SAS, SATA, XFIProvides four 2x2 Crosspoint mux functionCTLE boosts up to 22 dB at 16 GHzUltra-low latency of 100 psLow additive random jitter of 75 fs for PRBS dataExcellent return loss of −10 dB at 16 GHzSingle 3.3 V supplyInternal voltage regulator provides immunity to supply noiseLow active power of 160 mW per channelNo heat sink requiredPin-strap, SMBus or EEPROM programmingAutomatic receiver detection for PCIe use casesProtocol agnostic linear redriver allows seamless support for PCIe link trainingSupport for x2, x4, x8, x16, x24 bus width with one or multiple DS320PR 822Temperature range of –40 °C to 85 °C5.5 mm × 10 mm, 64 pin WQFN package

Description

The DS320PR 822 is a low-power high-performance linear repeater or redriver designed to support PCIe 5.0, CXL 2.0, UPI 2.0, and other interfaces up to 32 Gbps. The DS320PR 822 provides four 2x2 cross-point mux functionality. The DS320PR 822 receivers deploy continuous time linear equalizers (CTLE) to provide a programmable high-frequency boost. The equalizer can open an input eye that is completely closed due to inter-symbol interference (ISI) induced by an interconnect medium, such as PCB traces. The CTLE receiver is followed by a linear output driver. The linear data-paths of DS320PR 822 preserve transmit preset signal characteristics. The linear redriver becomes part of the passive channel that as a whole get link trained for best transmit and receive equalization settings. This transparency in the link training protocol results in best electrical link and lowest possible latency. Low channel-channel cross-talk, low additive jitter and excellent return loss makes the device almost a passive element in the link, but with its useful equalization. The data-path of the device uses an internally regulated power rail that provides high immunity to any supply noise on the board. The device also has low AC and DC gain variation providing consistent equalization in high volume platform deployment. The DS320PR 822 is a low-power high-performance linear repeater or redriver designed to support PCIe 5.0, CXL 2.0, UPI 2.0, and other interfaces up to 32 Gbps. The DS320PR 822 provides four 2x2 cross-point mux functionality. The DS320PR 822 receivers deploy continuous time linear equalizers (CTLE) to provide a programmable high-frequency boost. The equalizer can open an input eye that is completely closed due to inter-symbol interference (ISI) induced by an interconnect medium, such as PCB traces. The CTLE receiver is followed by a linear output driver. The linear data-paths of DS320PR 822 preserve transmit preset signal characteristics. The linear redriver becomes part of the passive channel that as a whole get link trained for best transmit and receive equalization settings. This transparency in the link training protocol results in best electrical link and lowest possible latency. Low channel-channel cross-talk, low additive jitter and excellent return loss makes the device almost a passive element in the link, but with its useful equalization. The data-path of the device uses an internally regulated power rail that provides high immunity to any supply noise on the board. The device also has low AC and DC gain variation providing consistent equalization in high volume platform deployment.