The AD7678ASTZ is a high-performance 18-bit, successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices. It is commonly used in a variety of applications including industrial automation, data acquisition systems, instrumentation, and medical devices.
One of the key features of the AD7678ASTZ is its high resolution, allowing precise conversion of analog signals into digital data. With its 18-bit resolution, it offers excellent accuracy, making it suitable for applications that require highly accurate measurements.
The ADC operates with a single power supply ranging from 2.7V to 5.25V, enabling it to be integrated into a wide range of systems. It supports both unipolar and bipolar analog input voltage ranges, providing flexibility in measurement setups. The input voltage range can be easily configured using the digital interface, simplifying system design.
To enhance the overall performance, the AD7678ASTZ incorporates an integrated sample-and-hold circuit that eliminates the need for an external one. This simplifies the design and reduces board space requirements. The ADC also includes a flexible digital interface, supporting a high-speed serial interface (SPI) or a parallel interface, enabling seamless integration with various microcontrollers or digital signal processors.
Furthermore, the AD7678ASTZ offers a programmable conversion rate of up to 250 kSPS (thousand samples per second), which ensures real-time measurement and enables fast data acquisition
