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

    See parametric specs for Variable Gain Amplifiers (VGAs) and Attenuators (VVAs) (17)

    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
    -40 to +85

    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
    Product Reliability Reports: MAX2056.pdf 
    Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

    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

    Ultra-Wideband, Direct-Conversion, L-Band Satellite Tuner

    • 925MHz to 2175MHz Frequency Range
    • Monolithic VCO
    • High Dynamic Range: -75dBm to 0dBm