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General Description

The MAX44280 offers a unique combination of high speed, precision, low noise, and low-voltage operation making it ideally suited for a large number of signal processing functions such as filtering and amplification of signals in portable and industrial equipment. The amplifier features an input offset of less than 50FV and a high-gain bandwidth product of 50MHz while maintaining a low 1.8V supply rail. The device is internally compensated for gains of 5V/V or greater. The device’s rail-to-rail input/outputs and low noise guarantee maximum dynamic range in demanding applications such

as 12- to 16-bit SAR ADC drivers. Unlike traditional rail-to-rail input structures, input crossover distortion is absent due to an optimized input stage with an ultra-quiet

charge pump. The MAX44280 includes a fast-power-on shutdown mode

for further power savings. The MAX44280 operates from a supply range of 1.8V to

5.5V over the -40NC to +125NC temperature range and can operate down to 1.7V over the 0NC to +70NC temperature range. The MAX44280 is available in a small,6-pin SC70 package and is also available in a 1mm x 1.5mm thin μDFN (ultra-thin LGA) package.

Features

? Low 1.8V Supply Rail Over the -40°C to +125°C Range

? 1.7V Supply Rail Over the 0°C to +70°C Range

? 50MHz Bandwidth

? Low 12.7nV/√HzInput Voltage-Noise Density

? Low 1.2fA/√HzInput Current-Noise Density

? Low 50μV (max) VOSat +25°C

? 500fA Low Input Bias Current

? 750μA Quiescent Current per Amplifier

? < 1μA Supply Current in Shutdown

? Small, 2mm x 2mm SC70 and 1mm x 1.5mm Thin μDFN Packages

? Low -110dB Total Harmonic Distortion

? 5V/V Minimum Stable Gain