LT1884IN8#PBF

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LT1884IN8#PBF is the industry\'s lowest power, low noise, rail-to-rail instrumentation amplifier. It is ideal for a variety of applications, including medical instrumentation, portable signal monitoring and signal conditioning, and audio and video instrumentation.

It combines a rail-to-rail output and a wide common-mode input range with extremely low quiescent current, so high battery life and low self-heating is achievable. Typical quiescent current is only 1 µA, making the LT1884IN8#PBF the industry\'s lowest power instrumentation amplifier.

The LT1884IN8#PBF features a low noise floor of 10.8 µV (typical) and low input bias current, allowing for greater accuracy and precision in applications including medical monitoring, portable audio and video testing, and precision signal conditioning.

The LT1884IN8#PBF provides a simplified design solution with its low offset voltage. The device also provides excellent gain accuracy due to its internal initial gain error amplifier and low VOS drift. With a wide dynamic range and low distortion, the LT1884IN8#PBF also delivers premium audio performance.

Application Field

The LT1884IN8#PBF is suitable for many applications, such as medical instrumentation, portable signal monitoring, audio and video monitoring, precision signal conditioning, and low power instruction amplifier designs. It is designed to provide a high dynamic range, low noise floor, and excellent gain accuracy.

The LT1884IN8#PBF rail-to-rail output and wide common-mode input range make it ideal for portable wireless instrumentation (WIFI/cellular) applications. Its low bias current, low quiescent current, and low offset voltage also make it a great choice for precision medical instrumentation and portable energy-efficient designs.

The LT1884IN8#PBF is also great for audio and video instrumentation, as it provides excellent gain accuracy and low distortion, resulting in premium audio performance. It can also be used in precision signal conditioning applications requiring high linearity and low noise.

Working Principle

The LT1884IN8#PBF is a low noise, low power, rail-to-rail instrumentation amplifier. It combines a rail-to-rail output and wide common-mode input range with extremely low quiescent current, allowing high battery life and low self-heating. The LT1884IN8#PBF features a low noise floor of 10.8 µV (typical) and low input bias current, allowing for greater accuracy and precision in its applications.

The LT1884IN8#PBF has an internal initial gain error amplifier and low VOS drift, providing excellent gain accuracy. The device also provides a wide dynamic range and low distortion, delivering premium audio performance. With a rail-to-rail output and wide common-mode input range, the LT1884IN8#PBF provides a simplified design solution with its low offset voltage.

The LT1884IN8#PBF utilizes an input stage composed of an operational amplifier (op amp) connected to a resistive feedback network as a non-inverting amplifier. The result is that the amplifier\'s output magnitude is proportional to the difference between its input voltages, multiplied by the feedback resistance\'s value. The op-amp feed-back topology not only allows for increased input voltage for improved signal-to-noise ratio, but also reduces the effect of input bias currents on output operation.

In the LT1884IN8#PBF, an additional active component on the input stage is a unity gain buffer. This provides additional isolation at the amplifier\'s input, allowing for improved signal-to-noise ratio, increases common-mode rejection ratios (CMRR) and ensures proper operation from the amplifier\'s input to its output.

Finally, the LT1884IN8#PBF utilizes a low-dropout voltage regulator (LDO), and is designed to operate over the extended temperature range (-40°C to 85°C). The LDO provides additional isolation between power and signal to ensure accurate performance. This combination of features makes the LT1884IN8 #PBF the ideal choice for low power instruction amplifier designs, as well as many other instrumentation applications.

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