Precision A/D Converter 24 Bit - AD7793BRU 

The AD7793 is an Analog-to-Digital (A/D) converter module developed by Analog Devices, Inc. It is a low-power, low-noise, 16-bit Sigma-Delta ADC that can be used in a variety of applications. The AD7793 has a programmable gain amplifier (PGA) with gains of 1, 2, 4, 8, 16, 32, or 64, which allows the user to measure very small signals with high resolution. The module also includes a voltage reference, which can be either an internal or external reference, and a 2-wire serial interface for communication with a microcontroller or other digital device. The AD7793 is commonly used in precision measurement applications, such as weigh scales, temperature sensors, and pressure sensors.

Quick Spec

• Chipset: AD7793BRU 24 Bit A/D Converter
• Data Interface: SPI
• Sampling Rate per/sec: 470
• RMS Noise: 40nv
• Supply Voltage: 2.7V to 5.25V
• Typical Current: 400uA
• Power-Down: 1uA max

Applications

• Thermocouple Measurements
• RTD Measurements
• Thermistor Measurements
• Industrial Process Control
• Instrumentation
• High Quality Medical Testing

Connections to Arduino

Here's a list of connections you will need

• AD7793 SCLK to Arduino digital pin 13
• AD7793 MISO to Arduino digital pin 12
• AD7793 MOSI to Arduino digital pin 11
• AD7793 CS to Arduino digital pin 10
• AD7793 GND to Arduino GND
• AD7793 VCC to Arduino 3.3V or 5V

Arduino Basic Example

Note that this is just an example code snippet and you will need to modify it according to your specific requirements. You can refer to the AD7793 datasheet for more information on the SPI communication protocol and register settings.

More advance Arduino example

This code provides functions for reading from and writing to the AD7793 registers. The setup() function initializes the SPI interface and configures the AD7793 for single conversion mode with a gain of 1 and an internal reference. The loop() function reads data from the AD7793 and processes it.

Resources

• AD7793 Datasheet
• Lots of Code Examples by Arduino
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Shipping List

• 1 x AD7793BRU 24Bit ADC Module