General Description
The MAX44264 is an ultra-small (6-bump WLP) op amp that draws only 750nA of supply current. It operates from a single +1.8V to +5.5V supply and features ground-sensing inputs and rail-to-rail output. The ultralow supply current, low-operating voltage, and rail-to-rail output capabilities make these operational amplifiers ideal for use in single lithium ion (Li+), or two-cell NiCd or alkaline battery systems. The rail-to-rail output stage of the MAX44264 is capable of driving the output voltage to within 4mV of the rail with a 100kΩ load, and can sink and source 11mA with a +5V supply. The IC is unity-gain stable and available in a space-saving 0.9mm x 1.3mm, 6-bump WLP package.

Benefts and Features
● Ultra-Low 750nA Supply Current per Amplifier
● Ultra-Low +1.8V Supply Voltage Operation
● Ground-Sensing Input Common-Mode Range
● Outputs Swing Rail-to-Rail
● Outputs Source and Sink 11mA of Load Current
● No Phase Reversal for Overdriven Inputs
● High 120dB Open-Loop Voltage Gain
● Low 500μV Input Offset Voltage
● 9kHz Gain-Bandwidth Product
● 250pF (min) Capacitive Load Capability
● Available in a Tiny, 0.9mm x 1.3mm, 6-Bump WLP Package

Applications
● Cell Phones
● Tablet/Notebook Computers
● Mobile Accessories
● Battery-Powered Devices