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Details for Texas Instruments


Low-Power 12 Gbps 8-Channel Linear Repeater With Equalization
Buy Directly from Texas Instruments (7160 in Stock)
$9.7800 per unit
Series Information for DS125BR820NJYT - Texas Instruments


  • feature
    Advanced Configurable Signal Conditioning I/O u2013 Receive CTLE up to 10 dB at 6 GHz u2013 Linear Output Driver u2013 Variable Output Voltage Range up to 1200 mVp-p
  • feature
    Enables Host ASIC to Meet Front-Port Eye Mask Requirements over Longer Reach
  • feature
    Flow-Thru Layout in 10 mm u00d7 5.5 mm 54-Pin
  • feature
    Low 70 mW/Channel (Typ) Power Consumption, with Option to Power Down Unused Channels
  • feature
    Programmable via Pin Selection, EEPROM, or SMBus Interface
  • feature
    Seamless Link Training Support
  • feature
    Single Supply Voltage: 2.5 V or 3.3 V
  • feature
    u221240u00b0C to 85u00b0C Operating Temperature Range


The DS125BR820 is an extremely low-power highperformance 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 receiver's 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.


IC Interface Type:
Interface Applications:
Front-Port 40G-CR4/SR4/LR4 Backplane 40G-KR4 & SAS/SATA/PCIe Link Extensions High-speed Interfaces
Supply Voltage Min:
Supply Voltage Max:
Interface Case Style:
No. of Pins:
Operating Temperature Min:
Operating Temperature Max:
Product Range:
Automotive Qualification Standard:
MSL 2 - 1 year
No SVHC (27-Jun-2018)
RoHS Phthalates Compliant:

Alternate Descriptions

Avnet America

12.5 Gbps 8-Channel Linear Repeater 54-Pin WQFN EP T/R

Avnet America product

Avnet Europe

12.5 Gbps 8-Channel Linear Repeater 54-Pin WQFN EP T/R

Avnet Europe product

Texas Instruments

Low-Power 12 Gbps 8-Channel Linear Repeater With Equalization

Texas Instruments product