Single-Supply 3V/5V, Voltage-Output, Dual, Precision 12-Bit DACs

The MAX5234/MAX5235 precision, dual-output, 12-bit digital-to-analog converters (DACs) consume only 360µA from a single 5V (MAX5235) or 325µA from a single 3V (MAX5234) supply. These devices feature output buffers that swing rail-to-rail. The internal gain amplifiers maximize the dynamic range of the DAC output.

The MAX5234/MAX5235 feature a 13.5MHz 3-wire serial interface compatible with SPI™, QSPI™, and MICROWIRE™. Each DAC input is organized as an input register followed by a DAC register. A 16-bit shift register loads data into the input registers. Input registers update the DAC registers independently or simultaneously. In addition, programmable control bits allow power-down with 1kΩ or 200kΩ internal loads.

The MAX5234/MAX5235 are fully specified over the extended industrial temperature range (-40°C to +85°C) and are available in space-saving 10-pin µMAX packages.

Applications

* µP-Controlled Systems * Automated Test Equipment (ATE) * Digital Gain and Offset Control * Industrial Process Controls * Motion Control

* Guaranteed 1/2 LSB INL (max)

* Low Supply Current

* 325µA (Normal Operation)

* 0.4µA (Full Power-Down Mode)

* Single-Supply Operation

* 3V (MAX5234)

* 5V (MAX5235)

* Space-Saving 10-Pin µMAX Package

* Output Buffers Swing Rail-to-Rail

* Power-On Reset Clears Registers and DACs to Zero

* Programmable Shutdown Modes with 1kΩ or 200kΩ Internal Loads

* Resets to Zero

* 13.5MHz SPI/QSPI/MICROWIRE-Compatible, 3-Wire Serial Interface

* Buffered Output Drives 5kΩ || 100pF