R2R DAC Board
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.
- Operational Amplifier: MCP6284
- 8-bit resolution
- 3.3V to 5V power supply voltage
- Current consumption of up to 20mA
- Gain Bandwidth Product: 5 MHz (typical)
- Supply Current: IQ = 450
- Low quiescent current
- Extended temperature range: -40
- Wide bandwidth
IC/Module: MCP6284 Rail-to-Rail Operational Amplifier
Designed with Microchip's 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 User Manual
- R2R DAC Board (1)
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