MAX44264 Ultra-Small (6-Bump WLP) Operational Amplifier

The MAX44264 is an ultra-small (6-bump WLP) op amp that consumes only 750nA of supply current. It operates from a single +1.8 V to +5.5 V supply and features ground-sensing inputs and rail-to-rail outputs. The ultra-low supply current, low operating voltage, and rail-to-rail output capabilities make these op amps ideal for use with single-cell lithium-ion (Li-Ion) or dual-cell NiCad or alkaline battery systems. The MAX44264 rail-to-rail output stage is capable of driving 100kΩ loads within the output voltage range of 4mV from the rails, and can receive 11mA from a +5 V source. The IC is unity-gain stable and comes in a space-saving 0.9mm x 1.3mm, 6-bump WLP package.

Key Features

Ultra-Low 750nA Current Supply Amplifier

Ultra-low +1.8 V supply voltage operation

Ground Sense Input Common Mode Range

Output swing rail to rail

Output source and load current is 11mA library

Phase reversal when input is overdriven

High 120dB open loop voltage gain

Low 500μV input offset voltage

9kHz Gain Bandwidth Product

250pF (min) capacitive load capability

Tiny, 0.9mm x 1.3mm, 6-bump WLP package