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AD7124-ASDZ HDL project#

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Overview#

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The HDL reference design for the AD7124-4 and AD7124-8 provides a +4/8-Channel, Low Noise, Low Power, 24-Bit, Sigma-Delta ADC with PGA and +Reference.

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The AD7124-4/8 offers output data rates from 1.17 SPS up to 19,200 SPS. +The AD7124-4/8 can achieve simultaneous 50 Hz and 60 Hz rejection when operating +at an output data rate of 25 SPS (single cycle settling), with rejection in +excess of 80 dB achieved at lower output data rates.

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This project has a SPI instance to control and acquire data from the AD7124-4/8 +24-bit precision ADC. This instance provides support for capturing continuous +samples at the maximum sample rate.

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Supported boards#

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Supported devices#

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Supported carriers#

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Block design#

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Block diagram#

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The data path and clock domains are depicted in the below diagram:

+AD47124-ASDZ block diagram +
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I2C connections#

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I2C type

I2C manager instance

Alias

Address

I2C subordinate

PS

i2c1

sys_hps_i2c1

—

—

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SPI connections#

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SPI type

SPI manager instance

SPI subordinate

CS

PS

SPI

ad7124

0

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GPIOs#

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The Software GPIO number is calculated as follows:

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    +

  • DE10-Nano: the offset is 32

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GPIO signal

Direction

HDL GPIO EMIO

Software GPIO

(from FPGA view)

DE10-Nano

sync_err

INPUT

32

0

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Building the HDL project#

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The design is built upon ADI’s generic HDL reference design framework. +ADI does not distribute the bit/elf files of these projects so they +must be built from the sources available here. To get +the source you must +clone +the HDL repository, and then build the project as follows:

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Linux/Cygwin/WSL

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1user@analog:~$ cd hdl/projects/ad7124_asdz/de10nano
+2user@analog:~/hdl/projects/ad7124_asdz/de10nano make
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A more comprehensive build guide can be found in the Build an HDL project user guide.

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Resources#

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More information#

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Support#

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Analog Devices, Inc. will provide limited online support for anyone +using the reference design with ADI components via the +EngineerZone FPGA reference designs forum.

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For questions regarding the ADI Linux device drivers, device trees, etc. +from our Linux GitHub repository, the team will offer support +on the EngineerZone Linux software drivers forum.

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For questions concerning the ADI No-OS drivers, from our +No-OS GitHub repository, the team will offer support on the +EngineerZone microcontroller No-OS drivers forum.

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It should be noted, that the older the tools’ versions and release branches +are, the lower the chances to receive support from ADI engineers.

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