MR-MINI-12BIT-DAC Gravitech

TM MR-MINI-12BIT-DAC Mini 12-BIT Digital-to-Analog Converter User Manual GRAVITECH.US uResearch GRAVITECH GROUP Copyright 2007 MicroResearch GRAVITECH GROUP WWW.GRAVITECH.US TM MR-MINI-12BIT-DAC Mini 12-BIT Digital-to-Analog Converter User Manual Description Features 12-Bit resolution The MR-MINI-12BIT-DAC is a dual channel Dual channel output and selectable 12-Bit Digital-to-Analog Converters with output gain 1x or 2x optional 2x buffered output and SPI interface. There are no external components Rail-to-rail output required. This makes it perfect for embedded Fast settling time of 4.5uS systems that require digital-to-analog Reference voltages VrefA and VrefB converter. can be adjust from 0 to VCC via on- board potentiometer This board features innovations that set it 2.7V to 5.5V single-supply operation TM apart from other digital-to-analog converter SPI interface with 20MHz clock module. Innovations feature like on-board support variable resistors for setup reference Small and compact in size voltages, enable/disable jumpers, pull-up Four mounting holes on each corner resistors, output terminal block and power Female and male header connector. LED. The module can be quickly connected discrete wires or header pins. The board is small and compact in size 2.20 x 1.70 inches. The MR-MINI-12BIT-DAC is designed base on MCP4922 IC. They are DACs that provide high accuracy and low noise performance for industrial applications where calibration or compensation of signal (such as temperature, pressure and humidity) is required. The devices utilize resistive string architecture, with its inherent advantages of low DNL error, low ratio metric temperature coefficient and fast settling time. These devices are specified over the extended temperature range. Also, include double buffered inputs, allowing simultaneous updates using the LDAC pin. These devices also incorporate a Power-On Reset (POR) circuit to ensure reliable power-up. FIG 1: MCP4922 block diagram Please take a look at MCP4922 datasheet for more detail. Copyright 2007 MicroResearch GRAVITECH GROUP WWW.GRAVITECH.US