AD8066AR

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Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

The AD8066AR is an operational amplifier which can be used in many different applications. It is designed to have low-power consumption and excellent input-common mode range. It has low input bias and offset current that make it suitable for applications requiring high accuracy in the output. The AD8066AR features a shutdown input that allows it to be used in power saving designs and is capable of driving a wide range of loads. The AD8066AR is widely used in audio applications such as active headphone and filter design, as well as video applications, due to its large input range and low noise.

The AD8066AR is based on the classic amplifier architecture that combines two stages and a single feedback path. At the first amplification stage, the input signal is applied to two complimentary pairs of JFETs, which serves as the input differential pair. The drain of the differential pair is connected to the source of a common source stage with a source resistance. The source resistance, together with the gate capacitance of the input differential, amplifies the input signal and determines the small-signal gain of the amplifier. The output of the common source stage is again amplified by two common-collector stages, thus providing a large output voltage gain.

The AD8066AR can be used in a wide range of applications including active filters, active line driver circuits, voltage followers, as well as many other high-voltage and low-voltage applications. It is suitable for both AC and DC applications, since it is capable of operating with a wide range of power supply voltages and over a wide temperature range. When used in AC applications, its slew rate of 8.5 V/μs and unity-gain bandwidth of 10 MHz make it suitable for high-speed signal amplification.

The AD8066AR has a low noise of 4 nV/√Hz and a maximum input bias current of 0.5 μA. It also features 1.8 mA output current with a voltage drop of 1.2 V at the output. To protect the AD8066AR from static damage, an ESD protection circuit is included in the design and ensures protection against ESD up to 8 kV contact discharge.

The AD8066AR is a versatile device that can be used in a wide range of analog signal amplification applications. Its low power consumption and excellent input common-mode range make it suitable for low voltage and power saving design considerations. Its low noise, high input bias current and slew rate make it suitable for applications that require larger signal amplification.

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