SBAU315B July 2018 – March 2025 ADS9224R , ADS9234R
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 5-1 shows the default factory jumper locations and settings.
Figure 5-1 ADS9224REVM-PDK Jumper LocationsTable 5-1 explains the functionality of each of these jumpers and their default 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. |