AD7923SRU-EP

Data Acquisition - Analog to Digital Converters (ADC)

An analog-to-digital converter (ADC) is a device used to convert a physical quantity, such as temperature, pressure, etc., into a digital representation, such as binary numbers. The AD7923SRU-EP is an example of an ADC used for data acquisition applications. This device consists of a single channel, 8-bit, low-power, high-speed analog-to-digital converter for precision data conversion in space-constrained designs.

Features:

• Single-Channel, 8-bit Precision
• Single 5 V Supply
• Wide Input Voltage Range (±10 V)
• High Speed (1.5 microseconds)
• Low Power Consumption (50mW)
• SPI/QSPI Bus compatible Interface

Application Field:

The AD7923SRU-EP is suitable for processing analog signals in a wide range of applications, including medical devices, industrial automation and control, test and measurement applications, and consumer electronics. The device has been designed to provide reliable data conversion in low-power and space-constrained designs, making it an ideal choice for engineers working in these fields.

Working Principle:

The AD7923SRU-EP uses a single-channel, 8-bit, single 5V supply for precision data conversion. The device samples an analog signal, converts it to digital and stores the result into an internal latch. The result is then sent to a serial output by implementing the SPI protocol. The AD7923SRU-EP has an internal clock, which allows it to operate at a rate of 1.5 microseconds. The converter also has a low-power mode, in which it consumes only 50mW of power.

The device uses a “sigma-delta” converter, which uses a successive approximation method to convert analog signals to digital. This method is based on sampling of the signal, and it uses an internal digital-to-analog converter (DAC) to reconstruct the analog signal. The difference between the DAC output and the original signal is used to generate an error signal, which is then used to modify the digital output of the ADC. This process is repeated continuously until the error signal reaches a predetermined level.

The AD7923SRU-EP provides an accurate and reliable data acquisition solution for any application that requires precision analog-to-digital conversion. The device is cost-effective, low-power, and high-speed, making it ideal for space-constrained designs.