General Description

The MAX44260/MAX44261 offer a unique combination of high speed, precision, low noise, and low-voltage operation making them ideally suited for a large number of signal processing functions such as filtering and amplification of signals in portable and industrial equipment.

The amplifiers feature an input offset of less than 50FV and a high-gain bandwidth product of 15MHz while maintaining a low 1.8V supply rail. The devices’ rail-torail input/outputs and low noise guarantee maximum dynamic range in demanding applications such as 12- to 14-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 MAX44260 includes a fast-power-on shutdown mode for further power savings. The MAX44261 offers a unique on-demand calibration pin where the user can invoke self-trimming of the input offset voltage.

特性 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

? 15MHz Unity-Gain Bandwidth

? Low 12.7nV/√Hz Input Voltage-Noise Density

? Low 1.2fA/√Hz Input Current-Noise Density

? Low 50μV (max) VOS at +25°C

? On-Demand VOS Self-Calibration (MAX44261)

? 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 (MAX44260) Packages

? Low 110dB Total Harmonic Distortion

Applications

?? Notebooks

?? 3G/4G Handsets

?? Portable Media Players

?? Portable Medical Instruments

?? Battery-Operated Devices

?? Analog-to-Digital Converter Buffers

?? Transimpedance Amplifiers

?? General-Purpose Signal Processing