ASNT5174-KMC View full size
  • Broadband (DC-28Gbps/DC-15GHz) tunable data/clock phase shifter
  • Delay adjustment range of 135ps
  • Exhibits low jitter and limited temperature variation over industrial temperature range
  • 100MHz of bandwidth for the phase adjustment tuning port
  • Fully differential CML input interfaces
  • Fully differential CML output interface with 400mV single-ended swing
  • Linearized data output for minimized undershoot/overshoot
  • Single +3.3V or -3.3V power supply
  • Power consumption: 415mW
  • Fabricated in SiGe for high performance, yield, and reliability
  • Custom CQFP 24-pin package
Function Operating Frequency Power, mW Package
Clock / Data Phase Shifter with Low Power Consumption and 135ps Delay Variation DC-28 Gbps / DC-15 GHz 415 24-pin CQFP


Fig. 1 Functional Block Diagram

ASNT5174-KMC is a data / clock variable delay line fabricated in SiGe technology.  The IC shown in Fig. 1 provides an adjustable delay of its differential output signal outp/outn in relation to its broadband input signal ip/in. The delay is controlled through a wide-band differential tuning port icntp/icntn.


The part’s I/Os support the CML logic interface with on chip 50Ω termination to vcc and may be used differentially, AC/DC coupled, single-ended, or in any combination. In the DC-coupling mode, the input signal's common mode voltage should comply with the specifications shown in the electrical characteristics section within the part's datasheet. In the AC-coupling mode, the input termination provides the required common mode voltage automatically. The differential DC signaling mode is recommended for optimal performance.