DS250DF810ABVT

The DS250DF810ABVT from Texas Instruments is an octal-channel, multi-rate retimer with integrated signal conditioning. It supports independent channel locking from 20.2752 to 25.8 Gbps, including sub-rates like 10.3125 Gbps and 12.5 Gbps.

This retimer features ultra-low latency, typically less than 500 ps for a 25.78125 Gbps data rate. It requires a single power supply and integrates AC coupling capacitors, reducing board routing complexity and BOM cost. Key electrical features include an integrated 2x2 cross point, adaptive continuous time linear equalizer (CTLE), adaptive decision feedback equalizer (DFE), and a low-jitter transmitter with a 3-Tap FIR filter.

It offers combined equalization supporting up to 35+ dB channel loss at 12.9 GHz and an adjustable transmit amplitude ranging from 205 mVppd to 1225 mVppd. The device also includes an on-chip eye opening monitor (EOM) and a PRBS pattern checker/generator.

The DS250DF810ABVT is housed in a small 8 mm x 13 mm BGA package (135-FCBGA) with a unique pinout that allows for easy flow-through routing of high-speed signals underneath the package. The operating temperature range is -10°C to 85°C. It is compatible with AC-coupling and CML inputs and supports protocols such as 100GbE, CDFP, CFP2/CFP4, IEEE802.3bj, Infiniband EDR, OIF-CEi-25G-LR/MR/SR/VSR, and QSFP28.