AD845AQ

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The AD845AQ is a low power, low cost and single-phase instrumentation amplifier which outperforms most standard load amplifiers. It provides differential-mode gain and therefore is primarily used in applications related to measuring small signals, such as sensor measurements, medical diagnostics and sound level detection. It is also popular in bridge-type strain measurements, force and acceleration measurements, and pressure transducer measurements. This high performance amplifier offers excellent precision and wide dynamic range, making it perfect for instrumentation and automatic test systems.

The AD845AQ provides excellent common-mode rejection (CMRR) with a wide gain bandwidth product (GBWP). The fact that it is current outputable also helps minimize external component delays. The eletromechanical features provide superb accuracy over a wide temperature range. The amplifier is capable of driving both single-ended and differential-mode outputs, making it an excellent choice for both high and low level applications.

The AD845AQ consists of a pair of matched JFET input transistors which are designed to function as an input differential amplifier. The JFET transistors are biased with a constant current source, which results in a low-distortion response. The differential amplifier then drives an internal low-power operational amplifier (Op-amp) that provides compensation and buffering. The amplifier\'s gain is determined by the ratio of the feedback resistor between the input and output stages of the amplifier to the internal resistance of the FET transistors.

The amplifier provides low noise, low offset and low drift. The large common-mode rejection ensures high gain accuracy and minimal signal distortion even in high noise environments. The power consumption is also extremely low, making it ideal for portable instrumentation systems. The AD845AQ also features high output current capability and excellent linearity, making it suitable for driving high power circuits.

The AD845AQ has numerous applications in linear- amplifiers, instrumentation, OP amps and buffer amps applications. Examples of these applications include mixer and equalizer circuits, strain-gage signal conditioning and data acquisition systems. The amplifier can also be used in medical systems, such as imaging and EEG analysis, and in sound systems, such as camera audio and telephone line monitoring.

The AD845AQ is ideal for designs where precision and accuracy are essential, such as automotive systems and industrial process control. The low-cost and low-power consumption make it a desirable choice for OEMs who are looking for cost savings and high performance. In addition, the amplifier offers high common- mode rejection, wide bandwidth and low output noise, making it ideal for high-performance A/D conversion.

Overall, the AD845AQ is a high-performance, low-power instrumentation amplifier ideal for a variety of linear-amplifiers and other applications. Its excellent noise and distortion performance, low drift and offset, and wide dynamic range make it a perfect choice for precision measurement and control. Its low power consumption also makes it an ideal option for energy constrained applications. The excellent price-performance ratio helps make it a popular choice for instrumentation and test systems, medical and sound systems, and automotive systems.

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