SBAU230C August   2014  – March 2021 ADS8688

 

  1. 1 Trademarks
  2. 2 ADS8688EVM-PDK Overview
  3. 3 EVM Analog Interface
    1. 3.1 ADC Analog Input Connections and Filter
    2. 3.2 Voltage Reference, Aux Input, and Supply Decoupling
  4. 4 Digital Interface
    1. 4.1 Serial Interface (SPI)
    2. 4.2 I2C Bus for Onboard EEPROM
  5. 5 Power Supplies
  6. 6 ADS8688 Initial Setup
    1. 6.1 Software Installation
  7. 7 EVM Operation
    1. 7.1 Connecting the Hardware
    2. 7.2 Modifying Hardware and Using Software to Evaluate Other Devices in the Family
    3. 7.3 EVM GUI Global Settings for ADC Control
    4. 7.4 Time Domain Display
    5. 7.5 Frequency Domain Display
    6. 7.6 Histogram Display
  8. 8 Bill of Materials, Schematics, and Layout
    1. 8.1 Bill of Materials
    2. 8.2 Board Layout
    3. 8.3 Schematic
  9. 10Revision History

7.2 Modifying Hardware and Using Software to Evaluate Other Devices in the Family

The ADS8688 is part of a family of related devices. This EVM hardware and software support the entire family because all the devices are pin-for-pin compatable. Table 7-1 lists other compatible devices in the family. The following procedure shows how to modify the hardware and software to evaluate the other devices in this family.

  1. Desolder the ADS8688 and replace this device with the device you want to evaluate.
  2. Enable the EEPROM for writing. This process is done by changing switch S2 to the top position using tweezers.Figure 7-3 details this process.
  3. Connect the EVM and start the GUI as described in Section 7.1.
  4. Use the Tools menu to Load EEPROM according to the device that is currently installed. When this procedure is successfully completed, you will see the status bar at the top of the software update according to the device installed on the hardware. For details, see Figure 7-4.
Table 7-1 Compatible Devices in the Family
Number of Channels Resolution
12-Bit 14-Bit 16-Bit 18-Bit
4 ADS8664 ADS8674 ADS8684 ADS8684A ADS8694
8 ADS8668 ADS8678 ADS8688 ADS8688A ADS8698
GUID-20210312-CA0I-2ZM8-PCMD-TDZDBVGMV5XL-low.gif Figure 7-3 Enable EEPROM for Writing
GUID-20210312-CA0I-FL0R-2SHS-FNWB8WL296NV-low.gif Figure 7-4 Configure EEPROM and Software for the New Device