High Isolation Selector / Switch 1 of 2

High-speed broadband switch with high isolation for selecting one of two inputs
Exhibits low jitter and limited temperature variation over industrial temperature range
DC to 1.0GHz analog bandwidth for control input
Ideal for high speed proof-of-concept prototyping
Fully differential CML input interface
Fully differential CML output interface with 550mV single-ended swing
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Frequency (min): DC
Frequency (max): 17 GHz
Power: 287 mW
Package: 24-pin QFN
Price: Request

Product Details

ASNT5051 desc

Fig. 1 Functional Block Diagram

The temperature stable and broadband ASNT5051-PQC SiGe IC can be utilized as a high isolation selector switch and is intended for use in high-speed measurement / test equipment. When The IC shown in Fig. 1 can route one of its differential data input signals d0p/d0n or d1p/d1n to its differential output outp/outn while effectively blocking the other data input with high isolation. Selection of a specific data input is achieved through an appropriate external DC biasing of the selector signal inputs cp/cn.


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 DC-coupling mode, the input signal’s common mode voltage should comply with the specifications shown in electrical characteristics 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.