General Description
The MAX4291/MAX4292/MAX4294 family of micropower operational amplifiers operates from a +1.8V to +5.5V single supply or ±0.9V to ±2.75V dual supplies and has Rail-to-Rail® input/output capabilities. These amplifiers provide a 500kHz gain-bandwidth product and 120dB open-loop voltage gain while using only 100µA of supply current per amplifier. The combination of low input offset voltage (±400µV) and high-open-loop gain makes them suitable for low-power/low-voltage high-precision applications.

FEATUREs
♦ Ultra-Low Voltage Operation—Guaranteed Down to +1.8V
♦ 100µA Supply Current per Amplifier
♦ 500kHz Gain-Bandwidth Product
♦ 120dB Open-Loop Voltage Gain (RL = 100kΩ)
♦ 0.017% THD + Noise at 1kHz
♦ Rail-to-Rail Input Common-Mode Range
♦ Rail-to-Rail Output Drives 2kΩ Load
♦ No Phase Reversal for Overdriven Inputs
♦ Unity-Gain Stable for Capacitive Loads up to 100pF
♦ 400µV Input Offset Voltage
♦ Single Available in Ultra-Small 5-Pin SC70
   Dual Available in Space-Saving 8-Pin µMAX