AD7864ASZ-2

The AD7864ASZ-2 is a high-speed, low-power, 12-bit Analog-to-Digital Converter (ADC) from Analog Devices, designed for applications requiring simultaneous sampling of multiple input signals. It features 4 simultaneously sampled inputs, each with its own track-and-hold amplifier, preserving relative phase information.

This ADC utilizes a Successive Approximation Register (SAR) architecture and offers a sampling rate of up to 520kSPS per channel. It operates from a single 5V supply and supports input ranges of 0 V to 2.5 V and 0 V to 5 V. The device includes an on-chip clock oscillator and signal conditioning circuitry, simplifying system design.

Designed for ease of integration, the AD7864ASZ-2 provides a high-speed parallel interface compatible with 3V processors. It is housed in a 44-MQFP (10x10) package and is suitable for surface mounting. Typical power consumption is 90 mW, with a power-saving mode available that reduces consumption to 20 μW.

Applications for the AD7864ASZ-2 include AC motor control, uninterrupted power supplies, data acquisition systems, and communications. Its ability to sample four channels simultaneously makes it ideal for systems where precise timing and phase relationships between signals are critical.