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MAX2373：LNAs with Step Attenuator and VGA

The MAX2371/MAX2373 wideband low-noise amplifier (LNA) ICs are designed for direct conversion receiver (DCR) or very low intermediate frequency (VLIF) receiver applications. They contain single-channel, single-ended LNAs with switchable attenuator and automatic gain control (AGC) intended as a low-noise gain stage. These devices provide high gain-control range (typically 60dB) at radio frequency (RF) with excellent noise and reverse isolation characteristics. The MAX2371/MAX2373 can work over the frequency range from 100MHz to 1GHz. In practice, only a narrow band is needed in each application, so different matching circuits can be applied. The devices are dynamically configured through the digital/analog control pins to select either maximum gain and low noise figure or power-saving mode. In addition, the MAX2371/MAX2373 feature high/low-current modes, high/low attenuation modes, linearly controlled gain states, and shutdown mode.

Key Features Low Noise Figure (1.8dB typical) High Small-Signal Gain (15dB Nominal) Wide Frequency Range of Operation (100MHz to 1GHz) 20dB Step Attenuator 45dB AGC Range Excluding Step Attenuator 2.65V to 3.3V Single-Supply Operation Shutdown Mode 3.5mA Supply Current, Adjustable Down to 2.5mA 40dB Reverse Isolation

MAX2371, MAX2373: Typical Operating Circuit Applications/Uses Direct Conversion Receiver (DCR) Very Low IF Receiver

DataSheet

Parametrics

Design kits & evaluation modules

• MAX2371EVKIT
• MAX2373EVKIT

Quality and Environmental Data

• MAX2373.pdf

Ordering Information