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Texas Instruments DS125DF111 Low Power Multi-Rate 2-Channel Retimer

Texas Instruments DS125DF111 Low Power Multi-Rate 2-Channel Retimer is a dual-channel (1-lane bidirectional) retimer with integrated signal conditioning. The DS125DF111 includes an input Continuous-Time Linear Equalizer (CTLE), clock and data recovery (CDR), and transmit driver on each channel. The DS125DF111 with its on-chip Decision Feedback Equalizer (DFE) can enhance the reach and OD: 600 to 1300 mVp-p robustness of long, lossy, cross-talk-impaired high-speed serial links to achieve BER < 1x10-15. For less demanding applications/interconnects, the DFE can be switched off and achieve the same BER Legacy Support performance. The DS125DF111 and DS110DF111 devices are pin-compatible. Each channel of the DS125DF111 independently locks to specific serial data at data rates within the primary range of 9.8 to 12.5 Gbps or to any supported sub-rate of these data rates. Supported data rates can be selected via SMBus using a preprogrammed table or customized as required. This simplifies system design and lowers overall costs.

Features

  • Pin-compatible retimer family
    • DS110DF111 with DFE: 8.5 - 11.3GHz
    • DS125DF111 with DFE: 9.8 - 12.5GHz
  • Adaptive CTLE: 33dB max. boost at 6.25GHz
  • Self-tuning 5-tap DFE
  • Raw equalized and retimed data loopback
  • Adjustable transmit VOD: 600 to 1300mVp-p
  • Settable Tx de-emphasis driver 0dB to -12dB
  • Low power consumption: 220mW/channel
  • Locks to half/quarter/eighth data rates for legacy support
  • On-chip eye monitor (EOM), PRBS generator
  • Input signal detection, CDR lock detection/indicator
  • Single 3.3V or 2.5V power supply
  • SMBus, EEPROM, or pin-based Ccnfiguration
  • 4mm × 4mm, 24-Pin QFN package
  • -40°C to +85°C operating temperature range

Functional Diagram

Texas Instruments DS125DF111 Low Power Multi-Rate 2-Channel Retimer

Evaluation Module

Texas Instruments DS125DF111EVM 9.8-12.5Gbps Retimer Evaluation Module (EVM) is a high bandwidth platform for evaluation of the DS125DF111. It includes an SMA interface to evaluate the DS125DF111 dual channel (1-lane bidirectional) retimer with integrated signal conditioning. The DS125DF111 includes an input Continuous-Time Linear Equalizer (CTLE), clock and data recovery (CDR), and transmit driver on each channel.

Inilathala: 2014-03-19 | Na-update: 2022-03-11