800MHz to 1000MHz Variable-Gain Amplifier with Analog Gain Control

High-Performance RF VGA with 44dB of Linearly Controlled Dynamic Range and Constant OIP3 of 39dBm

Please check latest availability status for a specific part variant.


The MAX2056 general-purpose, high-performance variable-gain amplifier (VGA) is designed to operate in the 800MHz to 1000MHz frequency range†. This device features 15.5dB of gain, 4.5dB of noise figure, and an output 1dB compression point of 23.5dBm. The MAX2056 also provides an exceptionally high OIP3 level of 39dBm, which is maintained over the entire attenuation range. In addition, the on-chip analog attenuators yield infinite control and high attenuation accuracy over selectable 22dB or 44dB control ranges. Each of these features makes the MAX2056 an ideal VGA for cellular band GSM, cdma2000, W-CDMA, and iDEN® transmitter and power amplifier AGC circuits.

The MAX2056 is pin compatible with the MAX2057 1700MHz to 2500MHz VGA, making this family of amplifiers ideal for applications where a common PC board layout is used for both frequency bands.

The MAX2056 operates from a single +5V supply and is available in a compact 36-pin thin QFN package (6mm x 6mm x 0.8mm) with an exposed pad. Electrical performance is guaranteed over the extended -40°C to +85°C temperature range.

MAX2056: Typical Application Circuit MAX2056: Typical Application Circuit Enlarge+

Key Features

  • 800MHz to 1000MHz RF Frequency Range†
  • 39dBm Constant OIP3 (Over All Gain Settings)
  • 23.5dBm Output 1dB Compression Point
  • 15.5dB Typical Gain at Maximum Gain Setting
  • 0.15dB Gain Flatness Over 100MHz Bandwidth
  • 4.5dB Noise Figure at Maximum Gain Setting (Using 1 Attenuator)
  • Two Gain-Control Ranges: 22dB and 44dB
  • Analog Gain Control
  • Single +5V Supply Voltage
  • Pin Compatible with MAX2057, 1700MHz to 2500MHz RF VGA
  • External Current-Setting Resistors Provide Option for Operating VGA in Reduced-Power/Reduced-Performance Mode
  • Lead-Free Package Available
  • Applications/Uses

    • ±10V from +5V Logic Supply
    • Automated Test Equipment (ATE)
    • Broadband Systems
    • Cellular cdmaOne™, cdma2000®, and Integrated Digital Enhanced Network Base-Station Transmitter
    • Digital and Spread-Spectrum Communication Systems
    • GSM 850/GSM 900 2G and 2.5G EDGE Base-Station Transmitters and Power Amplifiers
    • Microwave Terrestrial Links
    • Receiver Gain Control
    • Transmitter Gain Control
    • WCDMA 850MHz and Other 3G Base-Station Transmitters and Power Amplifiers
    Part NumberGain Cntl.ChannelsRF Freq.
    RF Freq.
    Analog Attenuation RangeGain
    Noise Figure
    (mm x mm)
    Package/PinsOper. Temp.
    MAX2056 Analog180010004415.54.53954-55-684.75 to 5.251366.0 x 6.0
    THIN QFN/36
    -40 to +85
    See All RF and IF Variable Gain Amplifiers (17)
    Pricing Notes:
    This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

    MAX2056EVKIT: Evaluation Kit for the MAX2056

    Technical Documents

    Tutorial 5429 The IP3 Specification - Demystified
    Tutorial 5100 General Layout Guidelines for RF and Mixed-Signal PCBs

    Quality and Environmental Data

    Product Reliability Reports: MAX2056.pdf 
    Lead-Free Package Tin (Sn) Whisker Reports

    CAD Symbols and Footprints

  • MAX2056ETX+
  • MAX2056ETX+T
  • MAX2056ETX+T_1
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >


    Related Resources

    16-Bit, 5.9Gsps Interpolating and Modulating RF DAC with JESD204B Interface

    • Simplifies RF Design and Enables New Wireless Communication Architectures
    • Direct RF Synthesis of 600MHz Bandwidth Up to 2.8GHz
    • Highly Flexible and Configurable

    USB-to-SPI Interface Adapter for SC1905 and SC1894

    • USB interface connection to the serial parallel interface to the SC1894 and the SC1905
    • Windows 10, Windows 7
    • USB 3.0 and USB 2.0

    698MHz to 3800MHz RF Power Amplifier Linearizer (RFPAL)

    • RFin/RFout PA Linearizer SoC in Standard CMOS
    • External Reference Clock Support:
    • Low Power Consumption: 1280mW

    300MHz–960MHz ASK Transmitter with I2C Interface

    • Low Implementation Cost
    • Increased Range, Data Rates, and Security
    • Extend Battery Life with Low Supply Current

    300MHz–960MHz ASK Transmitter with I2C Interface

    • Low Implementation Cost
    • Increased Range, Data Rates, and Security
    • Extend Battery Life with Low Supply Current