MAX44280:1.8V, 50MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op Amp

High Bandwidth and Excellent VOS Accuracy Over Time and Temperature

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.

Key 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/ 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
MAX44280: Typical Application Circuit
MAX44280: Typical Application Circuit
  • 3G/4G Handsets
  • Analog-to-Digital Converter Buffers
  • Battery-Operated Devices
  • General-Purpose Signal Processing
  • Notebooks
  • Portable Media Players
  • Portable Medical Instruments
  • Transimpedance Amplifiers
titleDownload file
MAX44280 Data SheetMAX44280.pdf
Part NumberAmps.Rail to RailAV
ICC per Amp.
Low Input Bias CMOS InputsInput IBIAS
Unity Gain BW
Slew Rate
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$0.85 @1k
Design kits & evaluation modules
Quality and Environmental Data
Related Products
  • MAX44260:1.8V, 15MHz Low-Offset, Low-Power, Rail-to-Rail I/O Op Amps
  • MAX44261:1.8V, 15MHz Low-Offset, Low-Power, Rail-to-Rail I/O Op Amps
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX44280AXT+ActiveSC-70,;6 pin;5.3 mm²-40°C to +85°CLead Free
MAX44280AXT+TActiveSC-70,;6 pin;5.3 mm²-40°C to +85°CLead Free
MAX44280AYT+ActiveUTLGA,;6 pin;1.6 mm²-40°C to +85°CLead Free
MAX44280AYT+TActiveUTLGA,;6 pin;1.6 mm²-40°C to +85°CLead Free
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