ADS7864YB

The ADS7864YB from Texas Instruments is a dual 12-bit, 500kHz analog-to-digital converter designed for high-speed simultaneous signal acquisition. It offers 6 fully differential input channels, grouped into three pairs, ensuring excellent common-mode rejection of 80dB at 50kHz, which is crucial for noisy environments.

This ADC boasts a 12-bit resolution and a maximum sample rate of 500 kSPS per channel, with a total throughput per channel of 2 µs and an effective sampling rate of 1 MHz. It utilizes a Successive Approximation Register (SAR) architecture and supports both external and internal reference modes. The interface is byte-wide parallel, designed to minimize software overhead.

Operating within a temperature range of -40°C to 85°C, the ADS7864YB consumes a typical power of 50mW. It requires analog and digital supply voltages between 4.75V and 5.25V, with an input voltage range of 0V to 2.5V. The device is housed in a compact TQFP-48 (81 mm²) package, suitable for surface mount applications.

Key applications for the ADS7864YB include motor control, multi-axis positioning systems, and 3-phase power control, where simultaneous sampling of multiple signals is required.