Component: ADC (AD7680) (Analog Input): Difference between revisions
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Revision as of 14:35, 13 July 2026
| Author | Matrix TSL |
| Version | 1.0 |
| Category | Analog Input |
ADC (AD7680) component
16-bit external ADC connected to the microcontroller using SPI.
Component Source Code
Please click here to download the component source project: FC_Comp_Source_ExternalADC_AD7680.fcfx
Please click here to view the component source code (Beta): FC_Comp_Source_ExternalADC_AD7680.fcfx
Detailed description
Overview
The AD7680 is a 2.5V to 5.5V SPI compatible, successive approximation analogue to digital converter (ADC).
The reference for the AD7680 is taken internally from VDD
Pin reference from the datasheet:
Examples
This example reads the voltage on the AD7680 Vin and converts the ADC results into a voltage. For the result to be correct, you must change the Voltage variable to match the supply voltage.
Circuit Diagram
Macro reference
Initialise
|
Initialise |
| Initialise the SPI bus ready for communications, | |
 - VOID
|
Return |
SampleADC
|
|
SampleADC |
| Reads the ADC and returns the reading as an unsigned 16-bit value. Range: 0-65535 / 0=0V / 65535=VCC | |
 - UINT
|
Return |
Property reference
|
Properties |
|
SPI Properties |
|
Channel |
| SPI Channel selector | |
|
|
Prescale |
| Prescale option selector | |
|
MOSI |
| SPI Data Out Pin SDO - Also Known as Master Out Slave In (MOSI) when used in Master mode. | |
|
|
MISO |
| SPI Data In Pin SDI - Also Known as Master In Slave Out (MISO) when used in Master mode. | |
|
|
CLK |
| SPI Clock Pin CLK - The Clock signal is driven by the SPI master. | |
|
|
CS / SS |
| Chip Select / Slave Select Pin Master Mode: General purpose output pin used to select the remote SPI device. Slave Mode: Hardware chip select pin input used to select the SPI device. | |
|
|
Simulation |
|
Data Recorder Trace |
|
|
Simulate Comms |