DS250DF230 25 Gbps Enhanced Multi-Rate 2-Channel Retimer

Texas Instruments' high-speed retimer extends the reach of differential channels while cleaning jitter and other signal impairments

Image of Texas Instruments' DS250DF230 Multi-Rate 2-Channel RetimerTexas Instruments' DS250DF230 is a dual-channel multi-rate retimer with integrated signal conditioning. The device can extend the reach and robustness of long, lossy, crosstalk-impaired high-speed serial links while achieving a bit-error rate (BER) of 10 to 15 or less. Each channel of the DS250DF230 independently locks to serial data rates in a continuous range of 19.6 Gbps to 25.8 Gbps or a supported sub-rate (÷2 and ÷4) including key data rates of 12.16512 Gbps, 9.8304 Gbps, and 6.144 Gbps.

The DS250DF230 is offered in a 36-pin NFBGA package or a 32-pin QFN package with compact body sizes of 5 mm x 5 mm. The NFBGA (ZLS) package offers robust performance and ease of design with a minimal BOM footprint. The QFN (RTV) package offers similar performance characteristics with improved thermal performance supporting PCB temperatures up to +105°C without the need for a heatsink.

Features
  • Dual-channel multi-rate retimer with integrated signal conditioning
  • All channels lock independently: 19.6 Gbps to 25.8 Gbps (including sub-rates of 12.16512 Gbps, 9.8304 Gbps, 6.144 Gbps)
  • Ultra-low latency: <500 ps (typ.) for data rate of 25.78125 Gbps
  • Adaptive continuous-time linear equalizer (CTLE)
  • Continuous adaptive decision feedback equalizer (DFE) is capable of compensating large channel loss variation over temperature
  • Combined equalization supporting 35 dB channel loss at 12.9 GHz
  • On-chip eye-opening monitor (EOM), PRBS pattern checker, and a generator
  • Low-jitter transmitter with a 3-tap FIR filter
  • Integrated 2x2 cross-point
  • Recovered clock is available for system clock synchronization applications on channel 0
  • Single power supply, no low-jitter reference clock is required
  • Wide stay-in-lock temperature range
Applications
  • Jitter cleaning for front-port optical interfaces in wireless and wired systems
  • Back-plane/mid-plane reach extension
  • Active cable assemblies
  • 802.3bj 100GbE, InfiniBand EDR, and OIFCEI-25G-LR/MR/SR/VSR electrical interfaces
  • SFP28, QSFP28, CFP2/CFP4, and CDFP

DS250DF230 Enhanced Multi-Rate 2-Channel Retimer

ImageManufacturer Part NumberDescriptionApplicationsPackage / CaseSupplier Device PackageAvailable QuantityView Details
IC INTFACE SPECIALIZED 36NFBGADS250DF230ZLSTIC INTFACE SPECIALIZED 36NFBGARetimer36-LFBGA36-NFBGA (5x5)0View Details

Evaluation Board

ImageManufacturer Part NumberDescriptionTypeFunctionEmbeddedAvailable QuantityView Details
DS250DF230EVMDS250DF230EVMDS250DF230EVMInterfaceRetimerNo3 - ImmediateView Details
Published: 2021-09-13