MAX5820MEUA+

The MAX5820MEUA+ from Analog Devices (formerly Maxim Integrated) is an 8-bit, dual-channel, voltage-output digital-to-analog converter (DAC). It utilizes an I2C-compatible, 2-wire serial interface that supports clock rates up to 400kHz, allowing multiple devices to share a single bus. This DAC operates from a single supply voltage ranging from 2.7V to 5.5V.

Key electrical characteristics include an 8-bit resolution, a fast 12µs settling time, and buffered rail-to-rail output amplifiers. It offers ultra-low supply current, drawing only 115µA at 3.6V and a power-down mode that reduces consumption to less than 1µA. The device also features Schmitt-trigger inputs for direct interfacing with optocoupled and transformer-isolated systems.

Packaged in an 8-pin µMAX or equivalent package, the MAX5820MEUA+ is designed for surface mounting. It is specified for operation over an extended temperature range of -40°C to +85°C. Applications include digital gain and offset adjustments, programmable voltage and current sources, and low-cost instrumentation.

This DAC includes features such as a power-on reset circuit that powers up the DAC in a specific power-down mode and readback capability for bus and data checking. Its architecture is a String DAC, supporting external voltage references.