1.8V to +5.5V, Ultra-Low-Power, 10-Bit, Voltage-Output DACs

The MAX5520/MAX5521 are single, 10-bit, ultra-low- power, voltage-output, digital-to-analog converters (DACs) offering rail-to-rail buffered voltage outputs. The DACs operate from a 1.8V to 5.5V supply and consume less than 6µA, making them desirable for low-power and low-voltage applications. A shutdown mode reduces overall current, including the reference input current, to just 0.18µA. The MAX5520/MAX5521 use a 3-wire serial interface that is compatible with SPI™, QSPI™, and MICROWIRE™.

At power-up, the MAX5520/MAX5521 outputs are driven to zero scale, providing additional safety for applications that drive valves or for other transducers that must be off during power-up. The zero-scale outputs enable glitch-free power-up.

The MAX5520 accepts an external reference input. The MAX5521 contains an internal reference and provides an external reference output. Both devices have force-sense-configured output buffers.

The MAX5520/MAX5521 are available in a 4mm x 4mm x 0.8mm, 12-pin, thin QFN package and are guaranteed over the extended -40°C to +85°C temperature range.

For 12-bit compatible devices, refer to the MAX5530/MAX5531 data sheet. For 8-bit compatible devices, refer to the MAX5510/MAX5511 data sheet.

Applications

* Automatic Trimming and Calibration in Factory or Field * Automatic Trimming and Calibration in Factory or Field * Chemical Sensor Cell Bias for Gas Monitors * Industrial Devices * Industrial Process Control and Remote Industrial Devices * Instrumentation * Portable Battery-Powered Devices * Programmable Liquid Crystal Display (LCD) Bias * Programmable Voltage and Current Sources * Remote Data Conversion and Monitoring

* Single +1.8V to +5.5V Supply

* Ultra-Low 6µA Supply Current

* Shutdown Mode Reduces Supply Current to 0.18µA (max)

* Small 4mm x 4mm x 0.8mm Thin QFN Package

* Flexible Force-Sense-Configured Rail-to-Rail Output Buffers

* Internal Reference Sources 8mA of Current (MAX5521)

* Fast 16MHz 3-Wire SPI-/QSPI-/MICROWIRE-Compatible Serial Interface

* TTL- and CMOS-Compatible Digital Inputs with Hysteresis

* Glitch-Free Outputs During Power-Up

* EV Kit Available