EVAL-AD7768FMCZ / EVAL-AD7768-4FMCZ

8/4 Channel, 24-Bit, 256 kSPS Simultaneous Sampling Sigma-Delta ADC.

Overview

The EVAL-AD7768 and EVAL-AD7768-4 are FMC evaluation boards for the AD7768 and AD7768-4, 8-channel and 4-channel simultaneous sampling sigma-delta analog-to-digital converters (ADCs), respectively. Each channel includes a sigma-delta modulator and digital filter, enabling synchronized sampling of ac and dc signals. The devices achieve 108 dB dynamic range at a maximum input bandwidth of 110.8 kHz, with typical performance of +/-2 ppm INL, +/-50 uV offset error, and +/-30 ppm gain error.

Features:

• 8/4 simultaneous sampling channels with independent sigma-delta modulators

• 108 dB dynamic range, 110.8 kHz maximum input bandwidth

• Three power modes: fast (256 kSPS), median (128 kSPS), low power (32 kSPS)

• Wideband antialiasing filter with +/-0.005 dB pass-band ripple

• Sinc5 filter for low latency, low bandwidth measurements

• Configurable decimation rates: x32, x64, x128, x256, x512, x1024

Applications:

• Sound and vibration monitoring

• Electrical power quality analysis

• Condition-based monitoring

• Acoustic and material testing

Figure 1 EVAL-AD7768

Figure 2 EVAL-AD7768-4

Recommendations

People who follow the flow that is outlined, have a much better experience with things. However, like many things, documentation is never as complete as it should be. If you have any questions, feel free to ask on our EngineerZone forums, but before that, please make sure you read our documentation thoroughly.

To better understand the AD7768 / AD7768-4, we recommend to use the EVAL-AD7768 / EVAL-AD7768-4 evaluation boards.

Table of contents

1. Using the evaluation board/full stack reference design that we offer:

   1. Prerequisites - what you need to get started

   2. Quick start guides:

      1. Using the ZedBoard

   3. Configure an SD Card with Kuiper

   4. Linux Applications

      1. IIO Oscilloscope

2. Design with the AD7768/AD7768-4

   • Block diagram

     • AD7768 product page

     • AD7768-4 product page

     • AD7768/AD7768-4 Datasheet

   • Resources for designing a custom AD7768/AD7768-4 based platform

     1. For Linux software:

        1. AD7768 IIO Precision ADC Linux Driver

        2. AXI ADC HDL Linux driver

        3. AXI-DMAC DMA Controller Linux driver

     2. For no-OS software:

        1. AD7768-EVB no-OS project

        2. AD7768 Driver

        3. no-OS IIO

     3. HDL reference design which you must use in your FPGA.

3. Help and Support

Block diagram

Warning

All the products described on this page include ESD (electrostatic discharge) sensitive devices. Electrostatic charges as high as 4000V readily accumulate on the human body or test equipment and can discharge without detection. Although the boards feature ESD protection circuitry, permanent damage may occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. This includes removing static charge on external equipment, cables, or antennas before connecting to the device.

Help and support

Please go to Help and Support page.