ASNT5131-KMC View full size
  • Broadband (DC-28Gbps) limiting amplifier
  • Exhibits low jitter and limited temperature variation over industrial temperature range
  • 100MHz of bandwidth for the amplitude adjustment tuning port
  • Ideal for high speed proof-of-concept prototyping
  • Fully differential CML input interfaces
  • Fully differential CML output interface with adjustable SE amplitude from 0V to 1.0V
  • Single +5.0V or -5.0V power supply
  • Power consumption: 500mW
  • Fabricated in SiGe for high performance, yield, and reliability
  • Custom CQFP 24-pin package
Function Operating Frequency Power, mW Package
Limiting Amplifier with Variable Control Amplitude (5.0V Power Supply) DC-28 Gbps 500 24-pin CQFP


Fig. 1 Functional Block Diagram

The temperature stable ASNT5131-KMC SiGe IC provides extremely low jitter broadband signal amplitude control capability, and is intended for use in high-speed measurement / test equipment. The IC shown in Fig. 1 can process a high-speed data signal dp/dn and deliver a high-speed data output signal qp/qn with its output signal amplitude controlled by tuning ports tp/tn.


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.