ASNT6141-KMC View full size
  • Broadband (DC-12GHz) linear amplifier for receiver-side applications
  • Features controlled gain from 0dB to 31.5dB
  • Features input offset adjustment and input peak detector
  • Fully differential input interface with on-chip 50Ohm termination
  • Fully differential output interface with on-chip 50Ohm termination
  • Output 1dB compression point of 1.5dBm
  • 3rd Harmonic better than -47dBc within the full bandwidth
  • 15dB Noise Figure
  • Single +3.3V or -3.3V power supply
  • Power Consuption: 530mW typical
  • Fabricated in SiGe for high performance, yield, and reliability
  • Custom CQFP 24-pin package
Function Operating Frequency Power, mW Package
Linear Amplifier DC-12 GHz 530 24-pin CQFP


Fig. 1 Functional Block Diagram

The temperature-stable linear amplifier ASNT6141-KMC IC shown in Fig. 1 has been fabricated in the SiGe technology and provides low-jitter broadband variable signal amplification between its input inp/inn and output outp/outn signal ports and is intended for use in high-speed communication systems. The gain adjustment is performed through two independent external control ports vgc1 and vgc2.


The part’s I/Os support the CML-type 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 specifications shown in the electrical characteristics table within the part's datasheet. In the AC-coupling mode, the input termination provides the required common mode voltage automatically. The on-chip peak detector delivers a single-ended output voltage pkdet proportional to the input signal’s amplitude. For optional output common-mode voltage adjustment, the output termination resistors can be connected to a separate positive power supply voltage vcco which may be different from vcc. The differential DC signaling mode is recommended for optimal performance.

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