Texas Instruments ADS9224REVM-PDK, Руководство пользователя, Страница: 9 / 34

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Setup
9 SBAU315A – July 2018 – Revised June 2019
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ADS9224REVM-PDK
5 Setup
This section explains the initial hardware and software setup procedures that must be completed for the
proper operation of the ADS9224xEVM-PDK.
5.1 Default Jumper Settings
JP1-JP2 and JP3-JP4 are used to connect differential analog sources to channel A and channel B inputs,
respectively. In addition, shunts can be used on jumpers JP1 and JP4 to ground the negative inputs and
support single-ended signals, as described in
Section 2.1 .
. Figure 3 shows the default factory jumper locations and settings.
Figure 3. ADS9224REVM-PDK Jumper Locations
Table 5 explains the functionality of each of these jumpers and their default configurations.
Table 5. Default Jumper Configurations
Designator Default Configuration Description
JP1 Open
CHA negative differential input. This pin can be grounded by shunting JP1 pin
1 and JP1 pin 2 for single-ended signals.
JP2 Open CHA positive differential input or input for single-ended signals.
JP3 Open
CHB negative differential input. This pin can be grounded by shunting JP1 pin
1 and JP1 pin 2 for single-ended signals.
JP4 Open CHB positive differential input or input for single-ended signals.
JP5 Open EEPROM write protect function (EEPROM rewrite disabled).
JP6 Open External CONVST is disconnected.
JP7 Installed Shutdown pin on U8 LDO is disabled.
JP8 1-2 Negative supply for fully-differential input amplifiers is connected to –230 mV.