1 Features
• Dual-channel multi-rate retimer with integrated
signal conditioning
• All channels lock independently from 19.6 to
25.8 Gbps (including sub-rates, such as 12.16512
Gbps, 9.8304 Gbps, 6.144 Gbps, and more)
• Ultra-low latency: <500 ps Typical for 25.78125-
Gbps data rate
• Adaptive continuous time linear equalizer (CTLE)
• Continuous adaptive decision feedback equalizer
(DFE), 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 generator
• Low-jitter transmitter with 3-Tap FIR filter
• Integrated 2×2 cross-point
• Recovered clock available for system clock
synchronization applications on channel 0
• Single power supply, no low-jitter reference clock
required
• Wide stay-in-lock temperature range

2 Applications
• Jitter cleaning for front-port optical interface in
wireless and wired systems
• Backplane/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, CDFP

3 Description
The DS250DF230 is a dual-channel multi-rate retimer
with integrated signal conditioning. The device is used
to extend the reach and robustness of long, lossy,
crosstalk-impaired high-speed serial links and while
achieving a bit error rate (BER) of 10–15 or less.
Each channel of the DS250DF230 independently
locks to serial data rates in a continuous range from
19.6 Gbps to 25.8 Gbps or to any supported subrate
(÷2 and ÷4), including key data rates such as
12.16512 Gbps, 9.8304 Gbps, and 6.144 Gbps.
The DS250DF230 is offered in two package options,
36-pin NFBGA and 32-pin QFN, with compact body
sizes of 5 × 5 mm. The NFBGA (ZLS) package offers
robust performance and ease of design with minimal
BOM footprint, while the QFN (RTV) package offers
similar performance characteristics with improved
thermal performance supporting PCB temperatures
up to 105°C without the need for a heat sink.