DS125BR820NJYT Part Information

Details for DS125BR820NJYT by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Driver & Interface ICs

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Part Description

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.

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Part Features

  • 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
  • Enables Host ASIC to Meet Front-Port Eye Mask Requirements over Longer Reach
  • Flow-Thru Layout in 10 mm u00d7 5.5 mm 54-Pin
  • Low 70 mW/Channel (Typ) Power Consumption, with Option to Power Down Unused Channels
  • Programmable via Pin Selection, EEPROM, or SMBus Interface
  • Seamless Link Training Support
  • Single Supply Voltage: 2.5 V or 3.3 V
  • u221240u00b0C to 85u00b0C Operating Temperature Range

Part Specifications

IC Interface Type SMBus
Interface Applications Front-Port 40G-CR4/SR4/LR4 Backplane 40G-KR4 & SAS/SATA/PCIe Link Extensions High-speed Interfaces
Supply Voltage Min 3V
Supply Voltage Max 3.6V
Interface Case Style WQFN
No. of Pins 54Pins
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
MSL MSL 2 - 1 year
SVHC No SVHC (27-Jun-2018)
RoHS Phthalates Compliant Yes
RoHS Compliant

Alternative Part Descriptions

  • 12-Gbps 8-channel linear redriver with equalization | Texas Instruments

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