Component: DAC Quad (MCP4728) (MCP4728) (Analog Output)
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(Redirected from Component: ID adb523db db13 4d19 bfa3 0fbc177e4d3f)
Jump to navigationJump to search| Author | Matrix TSL |
| Version | 1.0 |
| Category | Analog Output |
Contents
DAC Quad (MCP4728) component
Component to drive a quad digital to analogue converter (DAC) IC from Microchip via an I2C interface. Compatible with MCP4728 (12-Bit) devices.
Component Source Code
Please click here to download the component source project: FC_Comp_Source_DAC_MCP4728.fcfx
Please click here to view the component source code (Beta): FC_Comp_Source_DAC_MCP4728.fcfx
Detailed description
No detailed description exists yet for this component
Examples
No additional examples
Macro reference
ControlPins
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ControlPins |
| Allows Shutdown (SHDN) and Latch (LDAC) pins to be controlled directly if enabled. | |
 - BOOL
|
Latch |
| 0 = Data output driven from DAC register, 1 = Data output locked | |
 - VOID
|
Return |
Disable
|
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Disable |
| Disables the DAC output. | |
 - BYTE
|
Channel |
| Range: 0-3 / 0=DAC Channel 0 / 1=DAC Channel 1 ... | |
| - VOID
|
Return |
Enable
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Enable |
| Enables the DAC Output. | |
| - BYTE
|
Channel |
| Range: 0-3 / 0=DAC Channel 0 / 1=DAC Channel 1 ... | |
| - VOID
|
Return |
Initialise
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Initialise |
| Configures the SPI peripheral ready for communications and initialises the internal variables. DAC needs to be enabled before any output voltage can be generated. | |
| - VOID
|
Return |
SetDeviceAddress
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SetDeviceAddress |
| Writes a new device address into EE memory. The use LDAC pin component property must be set to true and the LDAC pin should be unique for every MCP4728 device connected to the I2C bus. | |
| - BYTE
|
OldAddress |
| Range: 0-7 | |
| - BYTE
|
NewAddress |
| Range: 0-7 | |
| - VOID
|
Return |
SetInitialEEOutput
|
|
SetInitialEEOutput |
| Stores a DAC value into EE memory to be used on power up. | |
| - BYTE
|
Channel |
| Range: 0-3 / 0=DAC Channel 0 / 1=DAC Channel 1 ... | |
 - UINT
|
DAC_Value |
| The value to output to the DAC | |
| - VOID
|
Return |
SetOutput
|
|
SetOutput |
| Sets the output voltage of the DAC 12-Bit: Range 0-4095 | |
| - BYTE
|
Channel |
| Range: 0-3 / 0=DAC Channel 0 / 1=DAC Channel 1 ... | |
| - UINT
|
DAC_Value |
| The value to output to the DAC | |
| - VOID
|
Return |
Property reference
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Properties |
|
Pull Down Option |
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VREF Option |
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Gain Option |
| Selects the maximum reference value for the DAC | |
|
Vref Voltage |
| Reference Voltage, Used to calculate the Voltage resolution. | |
|
Steps |
| Number of discrete output states available from the DAC. | |
|
Control Bits |
| Number of digital control bits | |
|
Resolution |
| Maximum output resolution based on number of control bits. | |
|
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Voltage Resolution |
| Specifies the Resolution per digital bit in terms of Voltage. | |
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I2C Connections |
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|
Device Address |
|
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Channel |
| Channel selection | |
|
SDA |
| Pin used for SDA (data signal) | |
|
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SCL |
| Pin used for SCL (clock signal) | |
|
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Baud Select |
| Baud rate option selector | |
|
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Baud Rate |
| Baud rate to be used | |
|
Stop Delay |
| On older microcontroller devices there is a potential for the I2C hardware channel to lock up if there is not a 10ms delay between an I2C stop event and the next I2C start event. Most modern microcontrollers will not have a problem so this property can be disabled to speed up the I2C communications. | |
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Use LDAC Pin |
| Allows the LDAC pin to be driven from an output pin on the microcontroller. If not used then tie the LDAC pin to GND to allow the DAC to function. | |
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Simulation |
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Simulation Comms |
