PGA870EVM

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PGA870EVM application fields and their working principles can be broadly classified into two categories: evaluation boards for operational amplifiers and conditioners for bus-powered systems. The evaluation board for operational amplifiers was designed to allow users to test the performance of PGA870EVM op amps before integrating them into their final applications. The conditioner section of this board is intended to give users the ability to supply power, change the gain, sample the output, and sense current with a single cable connection.The evaluation board for operational amplifiers consists of two main components: the device under test (DUT) and the evaluator board. The DUT is an operational amplifier, typically an LM833, LM741, or some other type of Op-amp. The device is simply wired to the evaluator board and the input and output are connected to the EVM. The input signal is supplied to the EVM and the output is monitored through the use of a storage scope. This allows the user to verify various parameters such as gain, bandwidth, rise/fall times, and linearity.The conditioner section of the PGA870EVM is designed to provide power, select the gain, sample the output and sense current in a single connection. This connection could be used to provide uniform power to multiple op-amps, sample the output from the op-amps, measure stack current, or supply power to a circuit with several power rails. The conditioner consists of a power source, a gain selector, and a buffer. The gain selector has multiple gain settings to make sure the op-amp works properly with the application. The buffer is used to reduce noise and allow the sampling of the output. The current sense is used to measure the current drawn by the op-amp and ensure it is within the bounds specified by the application.The PGA870EVM application field and working principles can be used in many different types of operational amplifiers and systems. The evaluation board is ideal for prototyping, testing, and validating the performance of operational amplifiers. The conditioner section can be used to apply uniform power, sample output, sense stack current, and supply power to multiple power rails. The PGA870EVM is an invaluable tool for any engineer or technician working with operational amplifiers.

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