Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

The LIA136STR is a linear instrumentation amplifier (IA) designed to provide reliable and repeatable measurements. It is a versatile amplifier used in a variety of powered industrial and laboratory applications. It is capable of both linear and differential conversion, with wide dynamic range and a low power consumption.

The IA is an active device, meaning that it uses external components to convert an input signal (involving linear or differential operation) into an amplified output signal. The IA\'s output is then op-amp operated or buffered, depending on the application, to provide the desired level of performance.

Application Field

The LIA136STR is designed for both industrial and laboratory applications. Its flexible input stage allows for both linear and differential input configurations. Its high accuracy and repeatability make it ideal for laboratory measurements, while its low power consumption and wide dynamic range makes it suitable for use in industrial applications.

The LIA136STR can be used for both current and voltage measurements, as well as for the remote monitoring of parameters such as temperature and pressure. In industrial settings, its low power consumption enables remote sensor systems to remain active for extended periods of time without needing frequent battery replacement.

The LIA136STR is also used in medical instrumentation, as it is capable of accurately measuring physiological parameters such as heart rate, blood pressure, and electrocardiogram (ECG) signals. It is also well-suited for use in medical imaging systems, such as MRI and CT scanners.

Working Principle

The LIA136STR is an operational amplifier or "op-amp", a type of amplifier which amplifies an input signal and passes it directly to the output. It is used to amplify low-level signals, such as those produced by electrodes or sensors, and to amplify an input signal to the level required for transmission or display.

The LIA136STR uses a transimpedance amplifier circuit for both linear and differential operation. A transimpedance amplifier takes an input current and converts it into an output voltage. This amplified output voltage is then op-amp operated or buffered, depending on the application. The op-amp operation or buffering then provides the desired level of performance, accuracy, and isolation.

The transimpedance amplifier consists of a differential amplifier and an integrating circuit, and is designed to transfer power from a source to a load. The differential amplifier ensures that the input current and output voltage are accurately matched, allowing the LIA136STR to accurately reproduce the input signal. The integrating circuit provides the necessary frequency compensation for the amplifier, so it can accurately measure signals over a wide frequency range.

The LIA136STR is designed for single-supply operation, using a single power/battery source for both its input and output stages. This feature makes it well-suited for use in remote sensing systems, where a single supply source can provide power to the entire system without requiring frequent battery replacement. For the industrial measurement applications, the LIA136STR can provide reliable and repeatable readings, making it ideal for use in automated processes.

Conclusion

In conclusion, the LIA136STR is a versatile linear instrumentation amplifier designed for both industrial and laboratory applications. It is capable of both linear and differential conversion, with wide dynamic range, low power consumption and single supply operation. Its transimpedance amplifier circuit ensures accurate and repeatable measurements, while its frequency compensation allows for accurate measurements over a wide frequency range. The LIA136STR is an ideal amplifier for both industrial and laboratory applications, and is well-suited for use in remote sensing systems and automated processes.