Jumper Settings For The Ads8555Evm - Texas Instruments ADS8555EVM-PDK User Manual

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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.
JUMPER SETTING
JP00–JP05 AMP/BYPS
JP06 INT/EXT
SLAU298A – NOVEMBER 2009 – REVISED MAY 2021
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Table 6-1. Jumper Settings
DEFAULT FUNCTION
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.
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.
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ADS8555EVM Operation
ADS8555EVM-PDK Evaluation Module 13