AD713x FMCZ no-OS Example Project

See projects/ad713x_fmcz (doxygen) for the Doxygen documentation.

Supported Evaluation Boards

Overview

The AD7134 is a quad channel, low noise, simultaneous sampling, precision analog-to-digital converter (ADC), based on the continuous time sigma-delta (CTSD) modulation scheme. The AD7134 achieves a dynamic range of 108 dB, with +/-2 ppm integral nonlinearity (INL), and +/-5 uV offset error. Operating at a maximum output data rate of 1.5 MSPS per channel, it supports 24-bit resolution with an input bandwidth of up to 391 kHz.

The EVAL-AD7134FMCZ evaluation board integrates two AD7134 ADCs for multidevice sampling demonstrations. It connects to a host platform via an FMC connector (VITA 57). Required input power ranges from 8 V to 14 V, regulated internally to 5 V, 1.8 V, and 1.2 V by onboard regulators. Distinct 4.096 V references are provided by the ADR444 for each ADC. Clock inputs can be sourced from a crystal, MEMS oscillator, or external CMOS input.

Applications

  • Electrical test and measurement

  • Audio test

  • 3-phase power quality analysis

  • Control and hardware in loop verification

  • Sonars

  • Condition monitoring for predictive maintenance

  • Acoustic and material science research and development

Hardware Specifications

Power Supply Requirements

The EVAL-AD7134FMCZ evaluation board requires an input power supply ranging from 8 V to 14 V. The onboard regulators convert this to the necessary operating voltages of 5 V, 1.8 V, and 1.2 V needed for the system's components. Distinct 4.096 V references are provided by the ADR444 for each ADC to ensure accurate data conversion.

On-board Connectors

Connector

Description

J1

SMB connector for XTAL2, external clock input

J2 to J17

SMB connectors for analog input (Channel 0 to 7)

P1, P7

8-pin connectors for differential analog inputs

P3

Bench top power supply voltage input

P5, P9

Optional external connectors for driver (Ch 0, Ch 4)

P6, P10

Optional external connectors for driver (Ch 0, Ch 1)

P8

FMC connector (160-pin, VITA 57)

No-OS Build Setup

Please see: No-OS Build Guide

No-OS Supported Examples

The initialization data used in the examples is taken out from: Project Common Data Path

Demo Example

The demo example initializes two AD7134 ADC devices over SPI using the SPI Engine and AXI DMAC cores. It configures PWM signals for sample triggering, acquires 1024 samples across all 8 channels (4 channels per ADC), converts the raw 24-bit data to voltage values, and prints the results over UART at 115200 baud.

IIO Example

The IIO example initializes both AD7134 ADCs and launches an IIOD server on the board so that the user may connect to it via an IIO client. Using IIO Oscilloscope, users can access device attributes such as offset, sampling frequency, and data scale, facilitating data acquisition and conversion of raw ADC readings into voltage signals.

If you are not familiar with ADI IIO Application, please take a look at: IIO No-OS

If you are not familiar with ADI IIO Oscilloscope Client, please take a look at: IIO Oscilloscope

To build the IIO example, add the following flag when invoking make:

IIOD=y

No-OS Supported Platforms

Xilinx Platform

Used Hardware

Connections

  • Mount the EVAL-AD7134FMCZ onto the ZedBoard through the FMC LPC connector (P8 on the evaluation board).

  • Supply the ZedBoard with 12 VDC using its barrel jack (J20). Power for the EVAL-AD7134FMCZ is supplied via the FMC connector from the ZedBoard.

  • Connect a micro-USB cable from the ZedBoard USB-UART port (J14) to your PC for serial communication.

Build Command

cp <SOME_PATH>/system_top.xsa .
# to delete current build
make reset
# to build the project
make
# to flash the code
make run