SBOU315 March   2024 PGA849

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1 EVM Circuit Description
    2. 2.2 Jumper Settings
    3. 2.3 Power-Supply Connections
    4. 2.4 Analog Input and Output Connections
    5. 2.5 Reference Input
    6. 2.6 Digital Input Pins and Gain Control
    7. 2.7 Modifications
    8. 2.8 Best Practices
      1. 2.8.1 Electrostatic Discharge Caution
      2. 2.8.2 Hot Surface Warning
  8. 3Hardware Design Files
    1. 3.1 Schematic
    2. 3.2 PCB Layout
    3. 3.3 Bill of Materials
  9. 4Additional Information
    1. 4.1 Trademarks
  10. 5Related Documentation

2.2 Jumper Settings

Figure 3-2 details the default jumper settings of the PGA849EVM. Table 3-1 explains the configuration for these jumpers.

GUID-20240320-SS0I-JMZT-ZW0W-FSTFZZQ6261C-low.png Figure 2-2 PGA849EVM Default Jumper Settings
Table 2-1 Default Jumper Configuration
Jumper Function Default Position Description

J1

REF Select

Shunt 5-6

 Shunt 5-6: Sets REF to mid output stage supply
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 output
Shunt 2-3: REF pin to REF connector
J6 Positive (noninverting) input, IN+ Shunt 2-3 Shunt 2-3: Input signal to SMA connector J3
Shunt 1-2: connects IN+ to GND
J8 Negative (inverting) input, IN– Shunt 2-3 Shunt 2-3: Input signal to SMA connector J6
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 PGA gain CTRL A2 Open Open: Sets A2 to GND or 0
Shunt 1-2: Sets A2 to VCC or 1
J11 PGA gain CTRL A1 Open Open: Sets A1 to GND or 0
Shunt 1-2: Sets A1 to VCC or 1
J12 PGA gain CTRL A0 Open Open: Sets A0 to GND or 0
Shunt 1-2: Sets A0 to VCC or 1