PA51A

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The PA51A is an instrumentation amplifier that is used in a wide variety of applications. It is also known as a precision amplifier due to its high level of accuracy and resolution. The PA51A is ideal for applications such as strain gauge, bridge instrumentation, bridge transducers, and current feedback.

The PA51A has three gain stages: the differential input stage, the non-inverting gain stage and the inverting gain stage. The differential input stage is a completely symmetrical type of input configuration which gives the circuit excellent linearity and CMRR (Common Mode Rejection Ratio). The non-inverting and the inverting stages provide the gain by using a feedback circuit which includes the two resistors R1 and R2. The gain of the amplifier is determined by these two resistors R1 and R2 and is expressed as A = 1 + R2/R1.

The PA51A works with a wide range of power supplies from +5V to +15V. It has a wide input voltage range from -8V to +8V and it can handle an output voltage range from -8V to +8V. The output impedance of the amplifier is typically 100 Ω. This amplifier has low power consumption, it uses about 5mA of current at a +15V supply and it is capable of delivering up to 900mVrms output voltage.

The PA51A amplifier also provides a high level of accuracy with a guaranteed output of 0.5% over entire temperature range. It has low noise levels with a signal to noise ratio of greater than 67 dB at a gain of 10, and a low distortion with a maximum THD (Total Harmonic Distortion) of 0.2%.

The PA51A is a very accurate and efficient instrumentation amplifier that is suitable for a wide range of applications. Its excellent output accuracy makes it ideal for precision measurement and data acquisition systems. Its low voltage and power supply requirements make it attractive to many designers as it reduces the overall cost of the system. The PA51A is also easy to use, with simple configuration and set up.

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