PGA203KPG4

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The PGA203KPG4 is an integrated 24V input voltage instrumentation amplifier (in-amp) family with a low offset voltage and precision gain block. It is designed to provide improved performance in a variety of applications such as pressure sensors, strain gauges, accelerometer, or other sensor applications that require an in-amp to provide gain accuracy, low offset voltage, as well as a large common mode range.

The PGA203KPG4 features a linear gain controlled by a 4-bit digital gain control. It provides a maximum gain of 128x, with a minimum gain of 1, and an offset voltage of less than 5mV. The gain is programmed easily and accurately with a 4-bit binary digital word. The gain can also be programmed with a wide range of external resistors, and even higher gains of up to 1000x are possible. In addition to its gain capabilities, the PGA203KPG4 also offers a wide common mode operating range and low power consumption, making it ideal for portable applications.

The PGA203KPG4 provides a high common mode rejection ratio (CMRR) of up to 100dB, which helps to maintain a stable gain over the entire operating temperature range of -40°C to +85°C. The device also provides low input bias currents which helps to reduce errors caused by external stray capacitive or static load. The PGA203KPG4 also features a low bandwidth of 5KHz, which is suitable for slow-moving signals.

The working principle of the PGA203KPG4 is based on differential input stages. The input is applied to the two channels, which are then combined in a summing amplifier. The gain is then set by the programmed digital word, and the output is fed to an amplifier stage. The amplifier stage provides gain control, low offset voltage, and low noise performance. The output of the amplifier stage is then connected to the output buffer, providing the appropriate output drive. The output voltage can be programmed by an external resistor, and the output is protected from external voltage sources and over current.

The PGA203KPG4 is ideal for a variety of applications such as in pressure and vibration sensing, medical instrumentation, automotive sensing and control, industrial process control, and consumer audio applications. It is offered in an 8-pin PGA package and is RoHS compliant. The PGA203KPG4 is an economical solution for providing stable gain and low offset voltage in precision applications.

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