MAX4491AUA+

The MAX4491AUA+ is a dual, high slew rate, rail to rail I/O operational amplifier (op-amp) in 8 pin µMAX package. This low cost CMOS op-amp has rail to rail input and output capability from either a single 2.7V to 5.5V supply or dual ±1.35V to ±2.75V supplies. This amplifier exhibits high slew rate of 10V/µs and gain bandwidth product of 10MHz. It can drive 2Kohm resistive loads to within 55mV of either supply rail and remain unity gain stable with capacitive loads up to 300pF. The MAX4491 is used in battery powered instruments, portable equipments, sensor amplifiers, audio signal conditioning, RF power amplifiers control, high side/low side current sensors and low power/low voltage applications.

• Supply current (per amplifier) of 0.8mA
• Automotive temperature range from -40°C to 125°C
• Input bias current of 50pA, input resistance is 1000Mohm
• Input offset voltage of ±1.5mV at TA = +25°C
• Input offset current of ±0.05nA
• Common mode rejection ratio (CMRR) of 75dB (VSS ≤ VCM ≤ VDD)
• Power supply rejection ratio (PSRR) of 100dB (2.7V ≤ VDD ≤ 5.5V)
• Rail to rail output voltage swing
• Large signal voltage gain of 110dB at RL = 100Kohm and 85dB at RL = 2Kohm
• 12nV/√Hz voltage noise density, 1fA√Hz current noise density at f = 10KHz

Applications

Signal Processing, Portable Devices, Audio

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party