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ADA-4543 - Silicon Bipolar Darlington Amplifier

General Description

Avago Technologies’ ADA-4543 is an economical, easy-touse, general purpose silicon bipolar RFIC gain block amplifiers housed in a 4-lead SC-70 (SOT-343) surface mount plastic package which requires only half the board space of a SOT-143 package.

Key Features

  • Small Signal gain amplifier.
  • Operating frequency DC.
  • 2.5 GHz.
  • Unconditionally stable.
  • 50 Ohms input & output.
  • Flat, Broadband Frequency Response up to 1 GHz.
  • Operating Current: 10 to 30 mA.
  • Industry standard SOT-343 package.
  • Lead-free option available Specifications 900 MHz, 3.4V, 15 mA (typ. ).
  • 15.1 dB associated gain.
  • 1.9 dBm P1dB.
  • 15 dBm OIP3.
  • 3.7 dB noise figure.
  • VSWR.

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ADA-4543 Silicon Bipolar Darlington Amplifier Data Sheet Description Avago Technologies’ ADA-4543 is an economical, easy-touse, general purpose silicon bipolar RFIC gain block amplifiers housed in a 4-lead SC-70 (SOT-343) surface mount plastic package which requires only half the board space of a SOT-143 package. The Darlington feedback structure provides inherent broad bandwidth performance, resulting in useful operating frequency up to 2.5 GHz. This is an ideal device for small-signal gain cascades or IF amplification. ADA-4543 is fabricated using Avago’s HP25 silicon bipolar process, which employs a double-diffused single polysilicon process with self-aligned submicron emitter geometry. The process is capable of simultaneous high fT and high NPN breakdown (25 GHz fT at 6V BVCEO).