100 MHz to 4000 MHz, Digitally Controlled RF Dual VGA

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Replacement Parts

Rochester Electronics is the only authorized source of Analog Devices' products that have previously been discontinued or have become obsolete. Product availability should be checked directly with Rochester Electronics.

Product Details

The ADRF6573 is a high performance, digitally controlled, dual variable gain amplifier (VGA) operating from 100 MHz to 4000 MHz. Each channel includes a 6-bit digital step attenuator (DSA) with a 31.5 dB gain control range, 0.5 dB steps, and ±0.25 dB gain accuracy. The attenuation of the DSA is controlled using a serial peripheral interface (SPI). The SPI is a serial in, parallel out shift register buffered by a transparent latch. It is controlled by three CMOS-compatible signals: data, clock, and latch enable. The amplifier in each channel is a broadband linear amplifier that operates up to 4000 MHz.

The device is internally matched to 50 Ω at the input and output. Only input/output ac coupling capacitors and power supply decoupling capacitors are required for operation.

The ADRF6573 consumes 85 mA per channel and operates from a single supply ranging from 4.75 V to 5.25 V. It is fully specified for operation from −40°C to +85°C.

The ADRF6573 is packaged in a 32-terminal, 7 mm × 7 mm × 1.0 mm, land grid array (LGA) package.


  • Wireless infrastructure
  • Automated test equipment
  • RF/IF gain controls