AD706JNZ

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The AD706JNZ is a linear amplifier designed specifically for signal conditioning applications, and is ideally suited for instrumentation and data acquisition (DAQ) applications. It is an operational amplifier (op amp) with a built-in buffer, allowing it to be used as a buffer amp. This makes it especially useful for high accuracy and low distortion input conditioning.

The AD706JNZ has a slew rate of 2V/us and can handle input signals up to 40V peak-to-peak. It has a differential output range of ± 10V and is capable of driving up to 50 load resistors. It utilizes TTL logic level compatible inputs for the control of gain and the onset of regulation, limiting the demands on external circuitry. The AD706JNZ can be powered from dual supplies from either 4.75V to 30V, or single supplies from 9.5V to 30V.

The AD706JNZ has dedicated pins for resistor-programmable gain and its functionality is controlled by three pins. The gain pins provide up to a unity-gain differential topology amplifier, or any gain between 0.1 and 10V/V, depending on the resistance values of the external resistors. The regulation feature can be enabled and disabled through two pins, allowing the user to dynamically adjust the gain range and the workings of the regulator.

The AD706JNZ\'s working principle involves a differential amplifier circuit which amplifies the input signal while providing negative feedback to maintain the desired gain, and a current-limiting voltage regulator which controls the output voltage of the amplifier. The differential amplifier consists of several BJTs, and is driven by the inputs of the control pins. The current regulator consists of BJTs, MOSFETs and resistors, and is configured to limit the output voltage of the amplifier when the designated resistor values are connected.

When the control pins are low, the current limitation circuit is disabled, allowing the amplifier to swing its output voltage based on the externally set gain. When the control pins are high, the current limitation circuit is enabled, limiting the output voltage across the load and allowing the user to adjust the gain. The output voltage is also provided to the “regulation” pin, showing the user the actual output voltage so they can adjust the gain.

In summary, the AD706JNZ is a highly flexible linear amplifier designed for signal conditioning and instrumentation applications. It is an op amp with a built-in buffer, and can be powered from either dual or single supplies. It features dedicated pins for resistor-programmable gain and its functionality is controlled by three pins. Its working principle involves a differential amplifier circuit with a current-limiting voltage regulator, which allows the user to dynamically adjust the gain range and the workings of the regulator.

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