SLVUDF7 October 2025
Figure 2-3 details the default jumper settings of the PGA848EVM. Table 2-1 explains the configuration for these jumpers.
| Jumper | Function | Default Position | Description |
|---|---|---|---|
J1 | REF Select | Shunt 5-6 | Shunt 5-6: Sets REF to mid output stage supply (R_DIV) Shunt 3-4: Sets REF to Ext. REF connector J2 Shunt 1-2: Sets REF to GND |
J17 | REF Buffer/Connector | Shunt 1-2 | Shunt 1-2: REF pin to REF buffer (U2) output Shunt 2-3: REF pin to REF connector J2 |
| J6 | Positive (non-inverting) input, IN+ | Shunt 2-3 | Shunt 2-3: Input signal to SMA connector J4 Shunt 1-2: Connects IN+ to GND |
| J8 | Negative (inverting) input, IN– | Shunt 2-3 | Shunt 2-3: Input signal to SMA connector J7 Shunt 1-2: Connects IN– to GND |
| J9 | LVDD+ connection | Shunt 1-2 | Shunt 1-2: Sets output stage supply LVDD+ to +VCC supply Shunt 2-3: Connects LVDD+ to external connector J14 pin 1 |
| J16 | LVSS– connection | Shunt 1-2 | Shunt 1-2: Sets output stage supply LVDD- to –VEE supply Shunt 2-3: Connects LVDD– to external connector J14 pin 3 |
| J10 | PGIA gain CTRL A2 | Open | Open: Sets A2 to GND or 0 Shunt 1-2: Sets A2 to VCC or 1 |
| J11 | PGIA gain CTRL A1 | Open | Open: Sets A1 to GND or 0 Shunt 1-2: Sets A1 to VCC or 1 |
| J12 | PGIA gain CTRL A0 | Open | Open: Sets A0 to GND or 0 Shunt 1-2: Sets A0 to VCC or 1 |