1.8V, 50MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op Amp

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 50µV 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 -40°C to +125°C temperature range and can operate down to 1.7V over the 0°C to +70°C 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.

Applications

* 3G/4G Handsets * Analog-to-Digital Converter Buffers * Battery-Operated Devices * General-Purpose Signal Processing * Notebooks * Portable Media Players * Portable Medical Instruments * Transimpedance Amplifiers

* 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/ Input Voltage-Noise Density

* Low 1.2fA/ Input Current-Noise Density

* Low 50µV (max) VOS at +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