Low-Power, Dual, Voltage-Output, 12-Bit DAC with Serial Interface

The MAX5104 low-power, serial, voltage-output, dual 12-bit digital-to-analog converter (DAC) consumes only 500µA from a single +5V supply. This device features Rail-to-Rail output swing and is available in a space-saving 16-pin QSOP package. To maximize the dynamic range, the DAC output amplifiers are configured with an internal gain of +2V/V.

The 3-wire serial interface is SPI™/QSPI™/MICROWIRE™ compatible. Each DAC has a double-buffered input organized as an input register followed by a DAC register, which allows the input and DAC registers to be updated independently or simultaneously with a 16-bit serial word. Additional features include programmable power- down (2µA), hardware power-down lockout (PDL), a separate reference voltage input for each DAC that accepts AC and DC signals, and an active-low clear input (CL) that resets all registers and DACs to zero. These devices provide a programmable logic pin for added functionality, and a serial-data output pin for daisy chaining.

Applications

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

* 12-Bit Dual DAC with Internal Gain of +2V/V

* Rail-to-Rail Output Swing

* 12µs Settling Time

* +5V Single-Supply Operation

* Low Quiescent Current

* 500µA (normal operation)

* 2µA (power-down mode)

* SPI/QSPI/MICROWIRE Compatible

* Space-Saving 16-Pin QSOP Package

* Power-On Reset Clears Registers and DACs to Zero

* Adjustable Output Offset