ASNT5190B-KMC View full size
  • High speed broadband 1:2 Demultiplexer
  • External control of internal clock's duty cycle
  • Exhibits low jitter and limited temperature variation over industrial temperature range
  • Ideal for high speed proof-of-concept prototyping
  • Fully differential CML input interfaces
  • Fully differential CML output interface with 400mV single-ended swing
  • Single +3.3V or -3.3V power supply
  • Power consumption: 600mW
  • Fabricated in SiGe for high performance, yield, and reliability
  • Custom CQFP 24-pin package

Function Operating Frequency Power, mW Package
Broadband Digital 1:2 Demultiplexer w/ Duty Cycle Control DC-64 Gbps 600 24-pin CQFP


Fig. 1 Functional Block Diagram

The temperature stable ASNT5190B-KMC SiGe IC can be utilized as a high speed 1:2 demultiplexer, and is intended for use in high-speed measurement / test equipment.  The IC shown in Fig. 1 can receive a high speed differential data input signal dp/dn and effectively demultiplex it into two high speed differential data output signals q1p/q1n and q2p/q2n by using a high speed differential clock input signal cp/cn. The duty cycle of the internal clock can be adjusted through ports dcinp/dcinn.


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.

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