The R2R DAC Board features an on-board digital-to-analog 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 on-board IDC10 connector.
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The R/2R ladder DAC is an 8-bit Digital to Analog Converter. An 8-bit value from the microcontroller port will be converted into an equivalent analog voltage by means of the R/2R resistor network. The R/2R ladder DAC makes use of only two resistor values, but it requires 2N resistors to implement the N-bit conversion. The resistor values are in the ratio of 1:2. The R/2R DAC board output is provided with the MCP6284 operational amplifier used as a buffer in order to drive loads with current consumption of up to 20mA.
|Applications||Board is a low cost solution for applictions which require low-resolution digital to analog converters|
|On-board modules||MCP6284 operational amplifier|
|Key Features||8-bit resolution of Analog-to-Digital conversion. R/2R DAC. Current consumption of up to 20mA.|
|Key Benefits||Flexible solution suitable for all MCU architectures|
|Input Voltage||3.3V or 5V|