The DS125BR820 is an extremely low-power high-performance repeater/redriver designed to support eight channels carrying high speed interface up to 12.5 Gbps, such as 40G-CR4, 40G-KR4, SAS/SATA, and PCIe. The receivers continuous time linear equalizer (CTLE) provides high frequency boost that is programmable from 3 to 10 dB at 6 GHz (12 Gbps) followed by a linear output driver. The CTLE receiver is capable of opening an input eye that is completely closed due to inter symbol interference (ISI) induced by interconnect medium such as board traces or twin axial-copper cables. The programmable equalization maximizes the flexibility of physical placement within the interconnect channel and improves overall channel performance.
When operating in 40G-CR4/KR4, SAS/SATA, and PCIe applications, the DS125BR820 preserves transmit signal characteristics, thereby allowing the host controller and the end point to negotiate transmit equalizer coefficients. This transparency in the link training protocol facilitates system level interoperability and minimizes latency.
The programmable settings can be applied easily via pin control, software (SMBus or I2C), or direct loading from an external EEPROM. In EEPROM mode, the configuration information is automatically loaded on power up, thereby eliminating the need for an external microprocessor or software driver.
Part number | オーダー・オプション | Device type | Protocols | Application | Number of channels (#) | Speed (Max) (Gbps) | Supply voltage (V) | Rating | Operating temperature range (C) | Package Group |
---|---|---|---|---|---|---|---|---|---|---|
DS125BR820 |
|
Repeater |
10G-SR/LR
10G-KR 40G-SR4/LR4 40G-KR4 SAS1 SAS2 SAS3 SATA1 SATA2 SATA3 Infiniband Fibre Channel CPRI OBSAI Interlaken sRIO General purpose PCIe1 PCIe2 PCIe3 |
Front Port
Backplane Peripheral I/O |
8 | 12.5 |
3.3
2.5 |
Catalog | -40 to 85 | WQFN | 54 |
DS100KR800 |
|
Repeater |
10G-SR/LR
10G-KR 40G-SR4/LR4 40G-KR4 Infiniband Fibre Channel CPRI OBSAI Interlaken sRIO General purpose |
Front Port
Backplane Peripheral I/O |
8 | 10.3 | -40 to 85 | WQFN | 54 | ||
DS280BR810 |
|
Repeater |
IEEE802.3bj
100GbE Infiniband EDR OIF-CEi-25G-LR/MR/SR/VSR/CR 100G-CR QSFP28 CFP2/CFP4 CDFP |
Front Port
Backplane |
8 | 28.125 | -40 to 85 | NFBGA | 135 | ||
DS280BR820 |
|
Repeater |
IEEE802.3bj
100GbE Infiniband EDR OIF-CEi-25G-LR/MR/SR/VSR/CR 100G-CR QSFP28 CFP2/CFP4 CDFP |
Front Port
Backplane |
8 | 28.125 | -40 to 85 | NFBGA | 135 |