General Description

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.

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/ReducedPerformance Mode

♦ Lead-Free Package Available

Applications

    GSM 850/GSM 900 2G and 2.5G EDGE Base-Station Transmitters and Power Amplifiers

    Cellular cdmaOne™, cdma2000, and Integrated Digital Enhanced Network (iDEN) Base-Station Transmitters and Power Amplifiers

    W-CDMA 850MHz and Other 3G Base-Station Transmitters and Power Amplifiers

    Transmitter Gain Control

    Receiver Gain Control

    Broadband Systems

    Automatic Test Equipment

    Digital and Spread-Spectrum Communication Systems

    Microwave Terrestrial Links