4-Bump Op Amp Ultra-Small, Ultra-Thin

The MAX44281 is the industry’s first op amp in a 4-bump WLP package, designed for use in portable consumer and medical applications. This device is offered as a no inverting amplifier with gain (AV) of +1V/V, +2V/V, or +10V/V. The device features rail-to-rail output, low 100µV input voltage offset, and 15MHz of bandwidth with only 700µA of supply current.
The device features shutdown functionality by pulling VDDto ground. During shutdown, both the input and the output are high impedance. The device is available in an ultra-small, 0.86mm x 0.86mm, 4-bump WLP package with 0.5mm height. It is specified over the -40°C to +125°C temperature range.

Key Features

  • 0.86mm x 0.86mm 4-Bump Thin WLP Package
  • Low 100µV Input Offset Voltage
  • Rail-to-Rail Output
  • 15MHz GBW with Only 700µA Supply Current
  • Shutdown Input Through VDD
  • Ultra-Low 10pA Input Bias Current
  • 1.8V to 5.5V Wide Supply Range


  • 3G/4G Handsets
  • Battery-Powered Devices
  • General-Purpose Signal Processing
  • Notebooks
  • Portable Medical Devices
  • Sensor Interfaces
  • Trans impedance Amplifiers

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