The MAX4242EUA+ is a micropower, beyond the rail, dual op-amp in 8 pin µMAX package. This amplifier provides 90KHz gain bandwidth product and 40V/ms slew rate while using only 10µA of supply current per amplifier. Although the minimum operating voltage is specified at 1.8V, this device typically operates down to 1.5V. The combination of ultra low voltage operation, beyond the rails inputs, rail to rail outputs and ultra low power consumption make it ideal for two cell battery powered system. It has an input common mode range that extends 200mV beyond each rail and output typically swing to within 9mV of rails with 100Kohm load. Beyond the rails input and rail to rail output characteristics allow full power supply voltage to be used for signal range. The combination of low input offset voltage, low input bias current and high open loop gain makes MAX4242 suitable for low power/low voltage precision applications. It is used in digital scales, strain gauges and sensor amplifiers.
Supply voltage range from 1.8V to 5.5V, ±0.9V to ±2.75V
Operating temperature range from -40°C to 85°C
Ultra low power consumption
CMRR of 90dB at VCC = 5V and PSRR of 82dB at 1.8V
Up to 200000hours operation from two AA alkaline cells
Beyond the rails input common mode range
Input offset current of ±0.5nA
No phase reversal for overdriven inputs
Input offset voltage of ±0.25mV and input bias current of ±2nA
Unity gain stable for capacitive loads up to 200pF
