AD8646ARMZ

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The AD8646ARMZ is a precision, low-noise, ultralow-power operational amplifier that is ideal for use in portable or battery-powered medical diagnostic, monitoring or measurement instrumentation applications. The device offers low input bias current and low power consumption, making it well suited for low-noise recording and high-speed sampling of ECG and EEG signals. It is rated over the extended industrial temperature range (−40°C to +85°C) and features a rail-to-rail input and output capability in a tiny SOT-23 package.

The AD8646ARMZ is a two-stage amplifier with a gain-bandwidth product of 3.3 MHz. It has a wide power supply range of 1.8 V to 5.5 V and is also capable of operating from single supplies as low as 2.5 V. The combination of ultralow power consumption and low quiescent current makes it well suited for battery-powered applications. High output drive capability and low output voltage swing make it ideal for driving high-impedance loads. It also has an integrated output short-circuit protection. The AD8646ARMZ combines a low noise of 2.2 nV/√Hz, a supply current of only 0.9 μA and low distortion performance of −78 dBc THD and −92 dB SNR.

The AD8646ARMZ uses a single voltage supply. It can operate in either standard or rail-to-rail mode. In standard mode, the input and output are referenced to the same voltage, typically half of the supply voltage (eg, for a 5V supply, input and output are clamped to 2.5V). This makes it ideal for applications where the input and output can swing only within a limited range. The rail-to-rail mode accepts full range inputs and outputs, making it ideal for applications where maximum dynamic range is required. The maximum output range and the minimum offset voltage of the AD8646ARMZ are dependent on the input range.

The AD8646ARMZ is a precision, high performance, low-power instrumentation amplifier suitable for a wide range of applications in the medical, automotive, consumer and industrial markets. It features an ultralow power consumption and low quiescent current, enabling it to provide long battery life in portable instruments. Its low input bias current and high output drive capability make it well suited for applications that require high accuracy and low noise. The AD8646ARMZ can be used for a variety of signal conditioning applications, such as ECG and EEG recording, isolate amplifiers, audio signal processing and any other application where low power and low noise are required.

The AD8646ARMZ is a two-stage amplifier. The input stage uses a wideband, high-impedance instrumentation amplifier input, suitable for low-noise and high-accuracy signal processing. The output stage is an NPN transimpedance amplifier, with a gain-bandwidth product of 3.3 MHz and is capable of driving high-impedance loads. The combination of the two stages provides excellent signal-to-noise ratio and wide dynamic range. The AD8646ARMZ also features a low output voltage swing and a low output impedance, which helps to maintain accuracy and keep distortion low.

The AD8646ARMZ is a low-power, low-noise precision operational amplifier that is well suited for applications in low-power, low-noise signal processing. Its range of features and capabilities make it an ideal choice for applications in portable, battery-powered and industrial instrumentation applications.

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