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General Description

The MAX44259/MAX44260/MAX44261/MAX44263 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 devices’ rail-to-rail 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 selftrimming of the input offset voltage. The MAX44263 is a dual amplifier.

Benefits and Features

● Low Noise for Higher System Accuracy

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

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

?? ? 50μV (max) VOS at +25°C

?? ? 110dB Total Harmonic Distortion

● 15MHz Unity-Gain Bandwidth Enables for HighBandwidth Applications

● Low Power Extends the Battery Life of Portable Equipment

?? ? 500fA Low Input Bias Current

?? ? 750μA Quiescent Current per Amplifier

?? ? < 1μA Supply Current in Shutdown

● On-Demand VOS Self-Calibration (MAX44261)

● Saves Board Space

?? ? Small, 2mm x 2mm SC70 and 1mm x 1.5mm Thin μDFN (MAX44260) and SOT23 (MAX44259) Packages

● Wide Supply Range from 1.8V to 5.5V Simplifies Power-Supply Requirements

Applications

● Notebooks

● 3G/4G Handsets

● Portable Media Players

● Portable Medical Instruments

● Battery-Operated Devices

● Analog-to-Digital Converter Buffers

● Transimpedance Amplifiers