Mikroelektronika d.o.o.
R2R DAC Board
R2R DAC Board
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The R2R DAC Board features an onboard digital-to-analogue converter R2R that uses R/2R-network and rail-to-rail operational amplifier MCP6284 (450 uA, 5 MHz). The board is connected to a prototype device via an onboard IDC-10 connector.
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The R2R DAC Board is a DAC module based 8-bit Digital to Analog Converter that provides a perfect way for converting a digital voltage signal into analog. This performance driven additional board supports high quality 8-bit resolution. Making use of the R/2R resistor network, the board facilitates conversion of an 8-bit value from the microcontroller port into an equivalent analog voltage.
While the R2R DAC Board requires 2N resistors for successful execution of the N-bit conversion process, it actually makes use of only two resistor values. The resistor values are in the ratio of 1:2. The R2R DAC additional board has been provided with a 2x5 connector CN1 through which it gets connected to a development system. The connection gets completed via one of the 2x5 connectors provided on the development system itself. The analog voltage signal gets delivered via a screw terminal CN2.
The R/2R ladder DAC comes equipped with MCP6284 operational amplifier. This amplifier is used as a buffer in order to drive loads with current consumption of up to 20mA. Additionally, it also supports rail-to-rail input and output swing, with a common mode input voltage range of VDD + 300mV to VSS.
IC/Module: MCP6284 Rail-to-Rail Operational Amplifier
Designed with Microchips advanced CMOS process, the MCP6284 operational amplifier can operate from a single supply voltage as low as 2.2 V, while drawing just 450
R2R DAC Board
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