AD7876CR

The AD7876CR is a complete 12-bit analog-to-digital converter from Analog Devices, part of the AD7870/AD7875/AD7876 family. It integrates a track-and-hold amplifier, a successive approximation ADC, an internal 3V buried Zener reference, and a versatile digital interface. The device operates from a ±5V supply and accepts a ±10V input voltage range, making it suitable for industrial and instrumentation applications requiring high accuracy and medium speed.

Key specifications include a 12-bit resolution, a sampling rate of 100 kSPS, and a single-ended input configuration. The converter architecture is SAR (Successive Approximation Register) with an S/H-ADC configuration. The digital interface supports both SPI and parallel data output, providing flexibility in system integration. The on-chip reference eliminates the need for external reference components.

The AD7876CR is designed for surface mount assembly and is available in a 24-SOIC package with a 7.50mm body width. It operates over the industrial temperature range of -40°C to +85°C. The device features low power consumption, typically 60 mW, and includes a versatile interface logic with fast bus access times. The internal clock is laser-trimmed for accurate conversion timing.

This ADC is suitable for data acquisition systems, process control, and industrial monitoring where a ±10V input range is required. The combination of internal reference, high accuracy, and multiple interface options makes it a reliable choice for many embedded designs.