ADRF6573:  100 MHz to 4000 MHz, Digitally Controlled RF Dual VGA

Product Details

Product Status:Recommended for New Designs

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


  • Operating frequency range: 100 MHz to 4000 MHz
  • Dual independent, digitally controlled VGA
  • Single serial interface control for both channels
  • 6-bit, 0.5 dB digital step attenuator
  • 30.8 dB gain control range with ±0.15 dB gain accuracy at 2140 MHz
  • 17.8 dB gain at minimum attenuation at 2140 MHz
  • P1dB of 19.2 dBm at 2140 MHz
  • OIP3 of 40.0 dBm at 2140 MHz
  • RF input and RF output internally matched to 50 Ω
  • Channel to channel isolation of 50 dB at 2140 MHz
  • Single-supply operation from 4.75 V to 5.25 V
  • Thermally efficient, 7 mm × 7 mm × 1.0 mm, 32-terminal LGA
  • The companion ADL5240 integrates a gain block with a DSA

Functional Block Diagram for ADRF6573


Title Content Type File Type
ADRF6573: 100 MHz to 4000 MHz, Digitally Controlled RF Dual VGA Data Sheet (Rev 0, 08/2014) (pdf, 785 kB) Data Sheets PDF
RF Source Booklet  (PDF, 4353 kB)
RF IC Product Overview - Version P (02/2014)
Overview PDF
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
ADRF6573 S-Parameters  (zip, 13 kB) S-Parameters ZIP
ADRF6573 Evaluation Board Software  (zip, 822 kB) Evaluation Software ZIP

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

Product Recommendations & Reference Designs

Companion Products

Suggested Companion Products

Recommended Low-Noise Voltage Regulators for the ADRF6573

  • For a fixed 5 V, 300 mA low dropout regulator with reverse current protection, we recommend the ADP7102.
Recommended Power Solutions
  • For selecting voltage regulator products, use ADIsimPower.

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Price, packaging, availability

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

ADRF6573 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
ADRF6573-EVALZ Status: Obsolete Evaluation Board - Yes - Contact ADI

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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