Clock / Data Phase Shifter with 105ps Delay Variation

Broadband (DC-22Gbps/20GHz) tunable data/clock phase shifter
Delay adjustment range of 105ps
Exhibits low jitter and limited temperature variation over industrial temperature range
2GHz of bandwidth for the phase adjustment tuning ports
Fully differential CML input interfaces
Fully differential CML output interface with 850mV single-ended swing
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Frequency (min): DC
Frequency (max): 20 GHz
Power: 745 mW
Package: 24-pin QFN
Price: Request

Product Details

Fig. 1 Functional Block Diagram

ASNT5101-PQC is a data / clock variable delay line fabricated in SiGe technology. Due to an extremely low jitter, the part is suitable for use in high-speed measurement / test equipment. The IC shown in Fig. 1 provides an adjustable delay of its differential output signal outp/outn in relation to its broadband input signal inp/inn. The delay is controlled through a wide-band differential tuning port icntp/icntn.


The part’s I/O’s 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-couping mode, the input termination provides the required common mode voltage automatically. The differential DC signaling mode is recommended for optimal performance.