Component: DAC (AD5662) (Analog Output)
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Version | 1.0 |
Category | Analog Output |
Contents
DAC (AD5662) component
16-bit external DAC connected to the microcontroller using SPI.
Detailed description
Overview
The AD5662 is a 3V/5V general purpose SPI compatible, high-resolution digital to analog converter (DAC), capable of generating a rail-to-rail voltage output.
With 16-Bit resolution, the AD5662 is capable of finely tuning the voltage output across 65,536 steps, with an individual step voltage of 5/65536 = 0.0000763 volts DC.
The AD5662 requires an external reference voltage to set the output range of the DAC.
Pin reference from the datasheet:
Circuit Diagram
Examples
This example reads a potentiometer that is connected across the supply voltage. The output from the DAC should mimic the voltage that's across ADC pin & GND.
Downloadable macro reference
OutputDAC | |
Outputs a value to the DAC, | |
- UINT | Output |
Range: 0-65535 / 0=0V / 65535=VCC | |
- VOID | Return |
Initialise | |
Initialise the SPI bus ready for communications, | |
- VOID | Return |
BuzzerOn | |
Switch On the Buzzer | |
- VOID | Return |
BuzzerOnDelay | |
Switch the Buzzer on for a fixed amount of time | |
- UINT | Time |
Time in milliseconds to keep the buzzer on | |
- VOID | Return |
WriteLEDs | |
Allows control of all 8-LEDs on the front of the Formula Flowcode. | |
- BYTE | LED_Byte |
- VOID | Return |
Initialise | |
Starts up the formula flowcode PWM for motor control and performs the wait for button press | |
- VOID | Return |
Initialise | |
The Init macro must be called once to initialise the Graphical LCD display before any other Graphical LCD component macros are called. | |
- VOID | Return |
Initialise | |
The Init macro must be called once to initialise the Graphical LCD display before any other Graphical LCD component macros are called. | |
- VOID | Return |
Initialise | |
The Init macro must be called once to initialise the Graphical LCD display before any other Graphical LCD component macros are called. | |
- VOID | Return |
Initialise | |
The Init macro must be called once to initialise the Graphical LCD display before any other Graphical LCD component macros are called. | |
- VOID | Return |
ARB4 | |
Loads the binary-data to an existing arbitrary waveform memory location ARB4. | |
- BYTE | Waveform |
- VOID | Return |
CLKSRRet | |
Returns the clock source <INT> or <EXT>. | |
[[File:]] - | Return |
MODPMDEV | |
Sets PM waveform deviation to <nrf> degrees. (Lower limit: -360° - Upper limit: 360°). | |
[[File:]] - | Degrees |
Sets PM waveform deviation in degrees (-360 - 360). | |
- VOID | Return |
MSTLOCK | |
Sends signal to SLAVE generator to get synchronised | |
- VOID | Return |
HILVL | |
Sets the amplitude-high-level to <nrf> Volts. (Lower limit: -0.490 V - Upper limit: 5.000 V). | |
[[File:]] - | HighLevel |
Sets the amplitude-high-level in Volts(V) (-0.490 V - 5.000 V). | |
- VOID | Return |
ARB3 | |
Loads the binary-data to an existing arbitrary waveform memory location ARB3. | |
- UINT | Waveform |
- VOID | Return |
CALADJ | |
Adjust the selected calibration value by <nrf> (Lower limit: -100 - Upper limit: 100). | |
[[File:]] - | Calibrate |
Adjust the selected calibration value (-100 - 100). | |
- VOID | Return |
STBRet | |
Returns the value of the Status Byte Register in <nr1> numeric format. | |
- BYTE | Return |
ARB2 | |
Loads the binary-data to an existing arbitrary waveform memory location ARB2. | |
- UINT | Waveform |
- VOID | Return |
EERRet | |
Query and clear execution error number register. | |
- STRING | Return |
MODFMSRC | |
Sets FM waveform source to; 0 INT, 1 = EXT. | |
[[File:]] - | Source |
Sets FM waveform source (0 = INT, 1 = EXT). | |
- VOID | Return |
MODAMFREQ | |
Sets AM waveform frequency to <nrf> Hz. (Lower limit: 1uHz - Upper limit: 20kHz). | |
[[File:]] - | Frequency |
Sets AM waveform frequency in Hertz(Hz) (1uHz - 20kHz). | |
- VOID | Return |
ESE | |
Sets the Standard Event Status Enable Register to the value of <nrf>. | |
- BYTE | Value |
Value of register 0-255 | |
- VOID | Return |
ARB1 | |
Loads the binary-data to an existing arbitrary waveform memory location ARB1. | |
- UINT | Waveform |
16 Bit binary number for arbitrary waveform. | |
- VOID | Return |
ARB4DEFRet | |
Returns user specified waveform name, waveform pint interpolation state and waveform length of ARB4. | |
- STRING | Return |
CLS | |
Clears status byte register of the interface. | |
- VOID | Return |
MSTRELOCK | |
Resynchronises the two generators in MASTER-SLAVE mode. | |
- VOID | Return |
NOISLVL | |
Sets the output noise level to <nr1> %. (Lower limit: 0% - Upper limit: 50%) | |
- BYTE | Percent |
Sets the output noise level in percent. (0 - 50) | |
- VOID | Return |
LOCKMODE | |
Sets the synchronising mode to; 0 = MASTER, 1 = SLAVE, 2 = INDEP. | |
- BYTE | Mode |
Sets the synchronising mode (0 = MASTER, 1 = SLAVE, 2 = INDEP). | |
- VOID | Return |
ADDRESSRet | |
Returns the instruments address | |
[[File:]] - | Return |
MODPMSRC | |
Sets PM waveform source to; 0 INT, 1 = EXT. | |
[[File:]] - | Source |
Sets PM waveform source (0 = INT, 1 = EXT). | |
- VOID | Return |
MODPWMSRC | |
Sets PWM waveform source to; 0 = INT, 1 = EXT. | |
[[File:]] - | Source |
Sets PWM waveform source (0 = INT, 1 = EXT). | |
- VOID | Return |
MOD | |
Sets modulation to; 0 = OFF, 1 = AM, 2 = FM, 3 = PM, 4 = FSK, 5 = PWM. | |
- BYTE | Modulation |
Sets modulation (0 = OFF, 1 = AM, 2 = FM, 3 = PM, 4 = FSK, 5 = PWM). | |
- VOID | Return |
ISTRet | |
Returns IST local message as defined by IEEE Std. 488.2. The syntax of the response is 0<rmt>, if the local message is false, or 1<rmt>, if the local message is true. | |
[[File:]] - | Return |
LRNRet | |
Returns the complete setup of the instrument as a binary data block | |
[[File:]] - | Return |
OPCRet | |
Query Operation Complete status. The response is always 1<rmt> and will be available immediately the command is executed because all commands are sequential. | |
[[File:]] - | Return |
PULSRANGE | |
Sets PWM waveform source to <1>, <2> or <3>; 1 = 1, 2 = 2, 3 = 3. | |
- BYTE | Range |
Sets the pulse rise and fall range. (1, 2 or 3) | |
- VOID | Return |
TSTRet | |
The generator has no self test capability and the response is always 0 <rmt>. | |
[[File:]] - | Return |
BSTTRGPOL | |
Sets the burst trigger slope to; 0 = POS, 1 = NEG. | |
[[File:]] - | Slope |
Set the burst trigger slope (0 = POS, 1 = NEG). | |
- VOID | Return |
ARB3Ret | |
Returns the binary-data from an existing abbitrary wavefrom memory location. | |
- UINT | Return |
BSTPHASE | |
Sets the burst phase to <nrf> degrees. (Lower limit: -360 - Upper limit: 360) | |
[[File:]] - | Degrees |
Sets the burst phase in degrees (-360 - 360) | |
- VOID | Return |
SWPTRGPER | |
Sets the sweep trigger period to <nrf> seconds | |
[[File:]] - | Seconds |
Set the sweep trigger period in seconds. | |
- VOID | Return |
PULSDLY | |
Sets the waveform delay to <nrf> sec | |
[[File:]] - | Sec |
- VOID | Return |
Initialise | |
Opens the COM port ready for communications. | |
- VOID | Return |