INA214AIDCKT

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The INA214AIDCKT Instrumentation, OP Amps, Buffer Amps is a DC-coupled, low-power, single-channel precision instrumentation amplifier. It is designed to provide high common-mode rejection, low power consumption and excellent accuracy suited for applications indifferent to cost. This device reduces high-frequency distortion, minimizes AC ground currents and provides excellent accuracy in both low- and high-frequency ranges. It offers a wide operating temperature range (+85°C to +150°C) and works well in both AC and DC-coupled applications.

The INA214AIDCKT comes in three different package sizes including SOIC, MSOP, and DIP. It has one input channel, enabling the user to measure up to ±40 V for single-ended operation and ±80 V for differential operation. It also features an adjustable gain from 1 to 1000, programmable offset pin, built-in offset trim, internal fuse selectable current source, and an external bias pin. Additionally, the INA214 features a low power-on reset threshold of 1.5V, making it a reliable performance device for applications with temperatures ranging from -40°C to +150°C.

The main application field of the INA214AIDCKT is the monitoring and measurement of signal voltages in the presence of noise and other disturbances. It is often used in instrumentation systems to amplify signals from transducers such as thermocouples and strain gauges. It is also suitable for analog-to-digital conversions, low frequency driving applications, and impedance measurement systems.

The working principle of the INA214AIDCKT is based on the internal amplifier’s gain configuration. The gain setting is performed by connecting resistors between the IN+ and IN- pins. This amplifier is DC-coupled, which means that its cutoff frequency is low enough to provide a wideband response in the input stage. Additionally, it has an adjustable offset pin, which can be connected either directly to a voltage or to a trimming potentiometer.

The output stage of the INA214AIDCKT is connected to two cascode MOSFETs, allowing the output voltage to be maintained at a constant level. This ensures that the output voltage of this device is not influenced by current variation in the output stage. It also ensures that the offset voltage at the output of the device is stable and that any noise generated by the output stage is at an acceptable level.

To reduce the noise generated by the INA214AIDCKT, it has a built-in internal fuse selectable current source. This current source helps regulate the output current under different loads and provides protection from over-current and over-voltage conditions. It also ensures that the output voltage is held constant despite changes in the load. The internal offset trim ensures high common-mode rejection and low frequency distortion.

In summary, the INA214AIDCKT is an ideal device for precision measurement or other applications that require low-power consumption and excellent accuracy. Its wide operating temperature range and built-in protection features make it a reliable performance device and its adjustable offset pin, programmable offset trim, and adjustable gain make it very versatile in instrumentation systems.

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