DS125DF111 Texas instruments

DS125DF111

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DS125DF111

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Описание

The DS125DF111 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 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 performance. The DS125DF111 and DS110DF111 devices are pin-compatible. Each channel of the DS125DF111 independently locks to specific serial data at data rates from 9.8 to 12.5 Gbps or to any supported sub-rate of these data rates. This simplifies system design and lowers overall cost. Programmable transmit de-emphasis driver offers precise settings to meet the SFF-8431 output eye template. The fully adaptive receive equalization (CTLE and DFE) enables longer distance transmission in lossy copper interconnect and backplanes with multiple connectors. The CDR function is ideal for use in front port parallel optical module applications to reset the jitter budget and retime high speed serial data.

Pin Compatible Retimer Family
- DS110DF111 with DFE: 8.5 – 11.3 Gbps
- DS125DF111 with DFE: 9.8 – 12.5 Gbps
Adaptive CTLE: 33 dB Max Boost at 6.25 GHz
Self Tuning 5-Tap DFE
Raw Equalized and Retimed Data Loopback
Adjustable Transmit V_OD: 600 to 1300 mVp-p
Settable Tx De-Emphasis Driver 0 to –12dB
Low Power Consumption: 220 mW/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 3.3-V or 2.5-V Power Supply
SMBus, EEPROM, or Pin Based Configuration
4-mm × 4-mm, 24-Pin WQFN Package
Operating Temp Range: –40°C to 85°C

Type	Retimer Mux
Number of channels	2
Input compatibility	AC-coupling, CML
Speed (max) (Gbps)	12.5
Protocols	10G-SR/LR, CPRI, General purpose, Infiniband, Interlaken
Operating temperature range (°C)	-40 to 85