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.

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