MAX2640AUT+T | Low-Noise RF Amplifier (300 MHz–1.5 GHz) | SiGe LNA IC

Product Overview

     The MAX2640AUT+T is a highly integrated low-noise RF amplifier optimized for frequencies from 300 MHz to 1.5 GHz. Built on advanced SiGe technology, this device delivers high gain, low noise figure, and strong linearity with minimal external components, making it ideal for front-end amplification in cellular, PCS, GPS, ISM, and other wireless receivers. It operates from a single 2.7 V to 5.5 V supply and draws low current, supporting efficient, compact RF designs with minimal board space.

Key Features

• Frequency range: 300 MHz to 1.5 GHz optimized LNA
• High gain (~15.1 dB typical at 900 MHz)
• Ultra-low noise figure (~0.9 dB typical at 900 MHz)
• Low current consumption (~7.8 mA @ 2.7–5.5 V)
• Single supply operation (2.7 V–5.5 V)
• High reverse isolation (~40 dB @ 900 MHz)
• Good linearity (IP3 ~ –10 dBm)
• Compact SOT-23-6 surface-mount package
• Minimal external matching components required
• Wide operating temperature range (–40 °C to +125 °C)

Applications

• Wireless front-end LNA for cellular and PCS bands
• GPS and satellite receiver preamplification
• ISM band (315/400/900 MHz) wireless systems
• RF data communication receivers
• Cordless phone and wireless LAN receivers
• Low-noise gain block in RF signal chains

Electrical Characteristics