AD8450ASTZ-RL

Data Acquisition - Analog Front End (AFE)

The AD8450ASTZ-RL is an advanced analog front end (AFE) used in data acquisition projects and system applications. It provides an interface between a variety of analog and digital signals, allowing for the exchange of information between them. The AFE is a key component in any system where the exchange of analog signals and digital signals needs to be achieved with appropriate gain and low distortion. This part provides a wide range of features including a high CMRR, low distortion, programmable gain, selectable input mode, and low offset voltage. It is also capable of operating in low voltage power supply.

Application Field

The AD8450ASTZ-RL is used in applications that require precision measurements of highly varied signal ranges. The part is specially suited for applications where the environment creates an electrical noise-restricted environment. Examples include automotive, aerospace, and medical applications that require real-world measurements in locations where noise needs to be kept minimal. The part is also useful in applications such as power supplies, instrumentation, audio systems, and signal processing equipment. In addition, the AFE features an integrated amplifier with a CMRR of up to 82 dB and a user-programmable gain of 1 to 80, allowing for a wide range of measurements.

Working Principle

The AD8450ASTZ-RL analog front end is designed using precision, high-speed, differential signal pathroutines, which results in excellent performance with minimal signal distortion. The signal chain begins with the input stage, which is comprised of a differential amplifier and a high-speed operational amplifier. The differential amplifier is responsible for removing any common mode signals that are present in the differential input signal, while the operational amplifier provides gain control. This configuration allows for the accurate conversion of the input signal into a usable form with minimal distortion.

The second stage consists of a low power, programmable gain amplifier that adds additional gain to the signal. This stage also features a selectable gain switch which allows the user to adjust the gain of the analog front end in order to obtain the desired signal range. The gain of the amplifier can vary from 1 to 80, allowing for a wide range of measurements. Finally, the output stage takes the amplified signal and passes it to the output terminal, providing a clean, reliable signal.

With a wide dynamic range and low distortion, the AD8450ASTZ-RL Analog Front End is an ideal choice for use in precision measurement applications. The low power consumption and programmable gain of the part make it suitable for a variety of applications that require real-world measurements while keeping noise to a minimum.