MAX44284EAUT+T

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The MAX44284EAUT+T is a low-noise, wide-bandwidth, precision rail-to-rail operational amplifier (op amp) and is designed to operate from power-supply voltages of +2.7V to +5.5V. It has a low input bias current of 10nA and an input offset voltage of 280mV and can achieve high-gain bandwidth and ultra-low distortion. The MAX44284EAUT+T belongs to the linear amplifiers instrumentation OP amps, buffer amps category.

The primary application fields of the MAX44284EAUT+T are in instrumentation and signal conditioning circuits, including audio signal processing, tone control, polynomial curves, filter-designing, filtering, DC-DC converters, battery-powered systems, as well as wherever very low noise and low performance is required for buffering and signal-handling.

The MAX44284EAUT+T has an adjustable output voltage range of 0 to the maximum power supply voltage range and the output port can drive up to 40mA. Moreover, this device delivers a high-bandwidth, 1dB input-referred noise density of below 6nV/√Hz and an 1kHz THD of 0.002%. It is capable of driving long and coaxial cables, and can route signals from a wide variety of sources and even from analog-to-digital converted signals.

The working principle behind the MAX44284EAUT+T is that it has two inputs, one for the noninverting input, and one for the inverting input. The inputs are connected to a high gain voltage amplifier which is capable of operating up to a supply voltage of + 5.5 volts. The amplifier provides closed loop gain and is powered by two internal power sources, one being the power supply voltage, VCC, and the other being the ground supply voltage, VC. The amplifier has two outputs, one connected to the noninverting input and the other connected to the inverting input, thereby allowing the amplifier to be used in a close-loop configuration. The amplifier further utilizes a feedback network with a resistor connected between the two inputs to reduce nonlinearities. The output voltage is determined by the difference in the voltages present at the two inputs and is also dependent on the gain of the amplifier.

The MAX44284EAUT+T also utilizes a slew rate controlling circuit, which controls the output voltage of the amplifier. The slew rate controller limits the speed of the amplifier and thereby reduce distortion in the circuit. Additionally, the MAX44284EAUT+T uses a short-to-ground protection circuit which protects against overvoltages and undervoltages at the power supply.

The MAX44284EAUT+T is thus a highly integrated and programmable precision op amp which can be used in a variety of applications. In addition to its low-noise and wide-bandwidth characteristics, it is capable of driving long cables and has a low-distortion output voltage. Furthermore, it is protected against overvoltages and undervoltages, and its output voltage is adjustable with a gain of up to 40mA.

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