Component: ADC (AD7680) (Analog Input): Difference between revisions

Latest revision as of 14:37, 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.

AD7680 Demo

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

@@ Line 120: / Line 120: @@
 |-
 |-
-| width="10%" align="center" style="background-color:#EAE1EA;" | [[File:Fc9-conn-icon.png]]
+| width="10%" align="center" class="mtx-class-propfolder" | [[File:Fc9-conn-icon.png]]
-| width="90%" style="background-color:#EAE1EA; color:#4B008D;" | SPI Properties
+| width="90%" class="mtx-class-propfolder" | SPI Properties
 |-
 |-
@@ Line 154: / Line 154: @@
 | colspan="2" | 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. &nbsp;
 |-
-| width="10%" align="center" style="background-color:#EAE1EA;" | [[File:Fc9-conn-icon.png]]
+| width="10%" align="center" class="mtx-class-propfolder" | [[File:Fc9-conn-icon.png]]
-| width="90%" style="background-color:#EAE1EA; color:#4B008D;" | Simulation
+| width="90%" class="mtx-class-propfolder" | Simulation
 |-
 |-

SteveT (talk | contribs)