SBOU327 December   2025

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Overview
    1. 1.1 Getting Started
      1. 1.1.1 Related Documentation From Texas Instruments
    2. 1.2 High-Voltage Warning and Safe Use
    3. 1.3 Electrostatic Discharge Caution
  8. 2Hardware
    1. 2.1 Jumper Blocks, Jacks, and Test Points
    2. 2.2 Inputs
    3. 2.3 Outputs
    4. 2.4 Enable or Disable
    5. 2.5 Status Flags
      1. 2.5.1 Circuit Protection
  9. 3Application Circuits
    1. 3.1 Setting Dual-Supply or Single-Supply Operation
      1. 3.1.1 Dual-Supply Operation Configuration
      2. 3.1.2 Single-Supply Operation Configuration
    2. 3.2 Common Op-Amp Configurations
      1. 3.2.1 Inverting Gain of –10 V/V
        1. 3.2.1.1 External Connections for –10 V/V Inverting Gain Configuration
        2. 3.2.1.2 Inverting Gain of –10 V/V Configuration Electrical Performance
      2. 3.2.2 Noninverting Gain of +11 V/V
        1. 3.2.2.1 External Connections for Noninverting Gain Configuration
        2. 3.2.2.2 Noninverting Gain Configuration Electrical Performance
      3. 3.2.3 Gain of +10 V/V Difference Amplifier
        1. 3.2.3.1 Jumper Shunt Locations for Difference-Amplifier Configuration
        2. 3.2.3.2 Gain of 10 V/V Difference Amplifier Configuration Electrical Performance
      4. 3.2.4 Improved Howland Current Pump
        1. 3.2.4.1 OPA598EVM Jumper Shunt Locations for an Improved Howland Current Pump
  10. 4Hardware Design Files
    1. 4.1 EVM Schematic
      1. 4.1.1 EVM Default Configuration
    2. 4.2 PCB Layout
    3. 4.3 Bill of Materials
  11. 5Reference
    1.     Trademarks

3.2.3 Gain of +10 V/V Difference Amplifier

Connect jumper shunts across the jumper blocks listed in Table 3-3 to establish a difference amplifier having a gain of +10 V/V. The jumper shunt installations are illustrated in Figure 3-3. The jumper shunts are designated in the BOM as a shunt and have an SH-J# part designator. The jumper shunts appear n the schematic as the red jumpers connected across the various JP# jumper blocks.

Table 3-3 Jumper Shunt Connections for a Gain of +10 V/V Difference Amplifier
Jumper BlockJumper Shunt ConnectsNotes
JP3R1 (1 kΩ) OPA598 –IN pin to VIN– J5
JP7VIN+ J9 to OPA598 noninverting input through R5 (1 kΩ)R divider resistor
JP9R8 (10 kΩ) from OPA598 noninverting input to GNDR divider resistor
JP11OpenEnabled mode
JP13Sets current limit to 100 mA
JP17E/D Com pinE/D Com pin selection GND
JP18RF1 (10 kΩ) inserted in OPA598 feedback path
JP211-kΩ, 2-W load resistor to OPA598 output
OPA598EVM OPA598EVM Jumper Shunt Locations for G = +10 V/V Difference AmplifierFigure 3-3 OPA598EVM Jumper Shunt Locations for G = +10 V/V Difference Amplifier