Nonvolatile, Quad, 8-Bit DACs

The MAX5105/MAX5106 nonvolatile, quad, 8-bit digital-to-analog converters (DACs) operate from a single +2.7V to +5.5V supply. An internal EEPROM stores the DAC states even after power is removed. Data from these nonvolatile registers automatically initialize the DAC outputs and operating states during power-up. Precision internal buffers swing rail-to-rail, and the reference input range includes both ground and the positive rail.

The MAX5105/MAX5106 feature a software-controlled 10µA shutdown mode and a mute state that drives the DAC outputs to their respective REFL voltages. The MAX5105 includes an asynchronous MUTE input, as well as a RDY/BSY-bar output that indicates the status of the nonvolatile memory.

The MAX5105 is available in 20-pin QSOP and 20-pin wide SO packages, and the MAX5106 is available in a 16-pin QSOP package.

Applications

* Automotive Engine Control * Automotive Passenger Compartment * Cell Phone Base Stations * Industrial Sensor Transmitters/Transducers * Industrial Sensor Transmitters/Transducers

* On-Chip EEPROM Stores DAC States

* Power-On Reset Initialization of All Registers to Prestored States

* +2.7V to +5.5V Single-Supply Operation

* Four 8-Bit DACs with Independent High and Low Reference Inputs (MAX5105)

* Ground to VDD Reference Input Range

* Rail-to-Rail Output Buffers

* Low 1mA Supply Current

* Low Power 10µA (max) Shutdown Mode

* Small 20- or 16-Pin QSOP Package

* SPI™/QSPI™/MICROWIRE™-Compatible Serial Interface

* Asynchronous MUTE Input (MAX5105)

* RDY/BSY-bar Pin to Indicate Memory Status (MAX5105)

* Wide Operating Temperature Range (-40°C to +85°C)