Overview

Features and Benefits

  • Wideband Coverage
    • 50MHz to 4000MHz RF Frequency Range
  • High Linearity
    • Greater Than +37.4dBm IIP3 Over the Full Attenuation Range
    • +22.6dBm Input P1dB
  • Integrates Two Analog Attenuators in One Monolithic Device
  • Two Convenient Control Options
    • Single Analog Voltage
    • On-Chip SPI-Controlled 10-Bit DAC
  • Step-Up/Down Pulse Command Inputs
  • Flexible Attenuation Control Ranges
    • 23dB (Per Attenuator)
    • 46dB (Both Attenuators Cascaded)
  • Linear dB/V Analog Control Response Curve Simplifies Automatic Leveling Control and Gain-Trim Algorithms
  • Excellent Attenuation Flatness Over Wide Frequency Ranges and Attenuation Settings
  • On-Chip Comparator (for Successive Approximation Measurement of Attenuator Control Voltage)
  • Low 13mA Supply Current
  • Single 5V or 3.3V Supply Voltage
  • Pin-Compatible with the MAX19792 and MAX19793
  • Pin-Compatible with the MAX19794 with Addition of Two Shunt Capacitors
  • PCB-Compatible with the MAX19790
  • Lead(Pb)-Free Package

Product Details

The MAX19791 dual general-purpose analog voltage variable attenuator (VVA) is designed to interface with 50Ω systems operating in the 50MHz to 4000MHz frequency range. The device includes a patented control circuit that provides 23dB of attenuation range (per attenuator) with a typical linear control slope of 8dB/V.

Both attenuators share a common analog control and can be cascaded together to yield 46dB of total attenuation range with a typical combined linear control slope of 16dB/V (5V operation).

Alternatively, the on-chip 4-wire SPI-controlled 10-bit DAC can be used to control both attenuators. In addition, a step-up/down feature allows user-programmable attenuator stepping through command pulses without reprogramming the SPI interface.

The MAX19791 is a monolithic device designed using one of Maxim's proprietary SiGe BiCMOS processes. The part operates from a single +5V supply or alternatively from a single +3.3V supply. It is available in a compact 36-pin TQFN package (6mm x 6mm x 0.8mm) with an exposed pad. Electrical performance is guaranteed over the -40°C to +100°C extended temperature range.

Applications

  • Automatic Level Control (ALC)
  • Broadband System Applications, Including Wireless Infrastructure Digital and Spread-Spectrum Communication Systems
  • General Test Equipment
  • Lineup Gain Trim
  • Microwave Point-to-Point Systems
  • Receiver Gain Control
  • Temperature-Compensation Circuits
  • Transmitter Gain Control
  • VSAT/Satellite Modems
  • WCDMA/LTE, TD-SCDMA/TD-LTE, WiMAX®, cdma2000®, GSM/EDGE, and MMDS Base Stations

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Tools & Simulations

Software Development

Product Recommendations

MAX19791 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

Sample & Buy


Ordering FAQs


See our Ordering FAQs for answers to questions about online orders, payment options and more.

 

Buy Now Pricing


(**) Displayed Buy Now Price and Price Range is based on small quantity orders.

 

List Pricing


(*)The 1Ku 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. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

 

Sampling


Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.


Price Table Help

 

Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

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.