LNAs with Step Attenuator and VGA
DescriptionThe 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.
- Direct Conversion Receiver (DCR)
- Very Low IF Receiver
|Part Number||RF Freq.|
(mm x mm)
|MAX2371||100||1000||1.8||15||-4||13.5||2.5 to 3.5||3.0 x 3.0|
Technical DocumentsTutorial 5100 General Layout Guidelines for RF and Mixed-Signal PCBs
App Note 2243 MAX2371 Makes a Terrific IF AGC Amplifier at 220MHz
|Device||Fab Process||Technology||Sample size||Rejects||FIT at 25°C||FIT at 55°C||Material Composition|
- 925MHz to 2175MHz Frequency Range
- Monolithic VCO
- High Dynamic Range: -75dBm to 0dBm