SLAU298A November   2009  – May 2021

 

  1.   Trademarks
  2. 1ADS8555EVM-PDK Overview
    1. 1.1 ADS8555EVM-PDK Features
    2. 1.2 ADS8555EVM Features
  3. 2EVM Analog Interface
    1. 2.1 ADC Supply, Input, Voltage Reference, and Digital Connections
    2. 2.2 ADC Amplifier Drive
  4. 3Digital Interface
    1. 3.1 Parallel Interface
    2. 3.2 Serial Interface (SPI)
    3. 3.3 I2C Bus and EEPROM
    4. 3.4 Connections to the PHI Connector
  5. 4Power Supplies
    1. 4.1 External Power Connections and Test Points
    2. 4.2 Low-Dropout Regulator (TPS7A3001 for HVSS)
    3. 4.3 Low-Dropout Regulator (TPS7A4700 for AVDD, HVDD)
  6. 5Installing the ADS8555EVM Software
  7. 6ADS8555EVM Operation
    1. 6.1 Connecting the Hardware and Running the GUI
    2. 6.2 Jumper Settings for the ADS8555EVM
    3. 6.3 Modifying Hardware and Using Software to Evaluate Other Devices in the Family
    4. 6.4 EVM GUI Global Settings for ADC Control and Registers
    5. 6.5 Time Domain Display
    6. 6.6 Frequency Domain Display
    7. 6.7 Histogram Display
  8. 7Bill of Materials, Layout, and Schematics
    1. 7.1 Bill of Materials
    2. 7.2 Board Layout
    3. 7.3 Schematics
  9. 8Revision History

6.2 Jumper Settings for the ADS8555EVM

The amplifiers and reference can be configured with jumpers. The amplifier jumpers (JP00–JP05) determine if the amplifier is used or if an external signal is directly connected to the ADC input. JP06 is used to select either the internal or external reference option. Make sure that the GUI configuration for the device reference matches the setting of JP06. The GUI software starts up in the internal reference mode, so make sure the JP06 is in the INT position. Table 6-1 lists the various jumper settings for the ADS8555EVM.

Table 6-1 Jumper Settings
JUMPER SETTING DEFAULT FUNCTION
JP00–JP05 AMP/BYPS AMP These eight jumpers determine if the amplifier is used to buffer the inputs signals or if the amplifier is bypassed. Choosing AMP connects the amplifier between each SMA connector (JP00–JP05) and the ADC input. The default amplifier configuration is noninverting (gain = 1 V/V). The amplifier gain configuration can be adjusted by soldering and desoldering different resistors. Choosing the bypass configuration (BYPS) connects the SMA connectors directly to the ADC input.
JP06 INT/EXT INT This jumper selects either the internal or external mode on the voltage reference. Using the internal mode disconnects the external reference. Using the external mode connects the external REF5025 2.5-V reference to the ADC reference input. Make sure that the GUI settings for the voltage reference match the setting on this jumper.