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Analog Devices Inc. ADL6331 Transmit Variable Gain Amplifier (TxVGA)

Analog Devices ADL6331 Transmit Variable Gain Amplifier (TxVGA) supplies an interface from RF digital-to-analog converters (RF DACs) to a single-ended power amplifier (PA) signal chain. Each ADL6331 IC comprises a balun, two differential RF amplifiers with bypass attenuators, and a digital step attenuator (DSA) to deliver appropriate transmitter performance in a 24-terminal, 4.0mm x 4.0mm LGA package.

The Analog Devices ADL6331 offers Serial-Port Interface (SPI) control to configure RF signal paths or optimize supply current vs. performance. An integrated RF balun provides a single-ended output over 0.38GHz to 8.0GHz (ADL6331-A) or 1.0GHz to 12.0GHz (ADL6331-B) with a good impedance match.

Features

  • Broadband TxVGA interfacing RF-DAC to beamformer and PA
  • Operating frequency range of 0.38GHz to 12GHz, two product variants
    • ADL6331-A: 0.38GHz to 8.0GHz
    • ADL6331-B: 1.0GHz to 12.0GHz
  • Optimizes common-mode rejection of RF-DAC, even-order harmonics, and intermodulation
  • 50Ω differential inputs and 50Ω single-ended output
  • Integrated broadband RF output balun
  • 70dB of gain control range in 1.0dB step
  • RF DSA range of 24.0dB with 1.0dB step
  • Amplifier bypass loss of 12dB each
  • Asynchronous toggle between multiple predefined attenuation values and bypass amplifier stages
  • Power gain at 4GHz: 15.5dB (ADL6331-A), 15.8dB (ADL6331-B)
  • Noise figure at 4GHz: 7.5dB (ADL6331-A), 8.1dB (ADL6331-B)
  • OIP3 at 4GHz: 32.8dBm (ADL6331-A), 31.8dBm (ADL6331-B)
  • OIP2 at 4GHz: 59.7dBm (ADL6331-A), 56.2dBm (ADL6331-B)
  • OP1dB at 4GHz: 12.2dBm (ADL6331-A), 12.3dBm (ADL6331-B)
  • Fully programmable through a 3- or 4-wire SPI
  • Single 3.3V supply
  • 24-terminal, 4.0mm x 4.0mm land grid array (LGA)

Applications

  • Aerospace and defense
  • Instrumentation and test equipment
  • Communication systems

Associated Eval Board

Analog Devices Inc. ADL6331-EVALZA Evaluation Board

Features manual control of the ADL6331 via USB on a Windows PC through an SDP-S interface board.

Learn Moreom Analog Devices Inc. ADL6331-EVALZA Evaluation Board View Productsrelaterat till Analog Devices Inc. ADL6331-EVALZA Evaluation Board

Functional Block Diagram

Block Diagram - Analog Devices Inc. ADL6331 Transmit Variable Gain Amplifier (TxVGA)
Publicerad: 2024-06-21 | Uppdaterad: 2024-07-15