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

2.1 Jumper Blocks, Jacks, and Test Points

The OPA598EVM includes a variety of jumper blocks, jacks, and test points that allow the EVM to be configured and evaluated in several circuit, test, and power supply configurations. The following provide the jumper block, jack, or test point number, and a brief description.

Table 2-1 lists the jumper block connections. See Figure 4-1 and Figure 4-3 for jumper block locations.

Table 2-1 Jumper Block Connections
Jumper BlockConnection When Jumper Shunt Installed Across Jumper Block
JP1Ri1 (10 kΩ) from VIN– jack J5 to OPA598 –IN pin
JP2Ri1 (10 kΩ) input end to GND
JP3Ri1 (1 kΩ, 2 W) from VIN– jack J5 to OPA598 –IN pin
JP4Ri1 (10 kΩ) input end to GND
JP5VIN+ jack J9 to OPA598 +IN pin
JP6VIN+ jack J9 to OPA598 +IN through R4 (10 kΩ)
JP7VIN+ jack J9 to OPA598 +IN through R5 (1 kΩ, 2 W)
JP8OPA598 IN+ pin to GND
JP9R8 (10 kΩ) from OPA598 +IN pin to GND
JP10R9 (49.9 Ω, 2 W) from OPA598 +IN pin to GND
JP11OPA598 in shutdown (SD) mode
JP12Rcl1 (237 kΩ) to GND sets the short-circuit current to 50 mA
JP13Rcl2 (90.9 kΩ) to GND sets the short-circuit current to 100 mA
JP14Rcl3 + R13 (41.2 kΩ + 422 Ω) to GND sets the short-circuit current to 150 mA
JP15Rcl4 (16.9 kΩ) to GND and sets the short-circuit current to 200 mA
JP16Rcl5 (2.32 kΩ) to GND sets the short-circuit current to 250 mA
JP17Two of 3 pins used to reference EDcom to either VSS or GND
JP18RF1 (10 kΩ) in OPA598 feedback path
JP19RF2 (1 kΩ, 2 W) in OPA598 feedback path
JP20RF3A, RF3B, Rx1, Rx2 network in OPA598 feedback path
JP21RL (1 kΩ, 2 W) resistor to ground

Table 2-2 lists the jack functions. See Figure 4-1 and Figure 4-3 for jack locations.

Table 2-2 Jack Functions
JackFunction
J1NA
J2NA
J3NA
J4NA
J5OPA598 VIN- input, BNC female connector
J6V+ power supply and GND terminal block (screw type)
J7V- power supply and GND terminal block (screw type)
J8NA
J9OPA598 VIN+ input, BNC female connector
J10NA
J11OPA598 VOUT, BNC female connector
J12OPA598 VOUT and GND terminal block (screw type)

Table 2-3 lists the test points. See Figure 4-1 and Figure 4-3 for test-point locations.

Table 2-3 Test Points
Test PointFunction
TP1Connected to VIN- input jack
TP2GND point for VIN- TP1
TP3OPA598 -In input pin
TP4Connected to VIN+ input jack
TP5GND point for VIN+ TP4
TP6OPA598 +In input pin
TP7GND point near TP9
TP8OPA598 Thermal Flag pin
TP9OPA598 Current Flag pin
TP10OPA598 OUT pin
TP11GND point near TP10
TP12Test point in middle of Rx1, Rx2 feedback network circuit
TP13GND point near TP12
TP14Connected to VOUT jack
TP15GND point near TP14
TP16GND point near TP8
TP17VDD supply voltage connects to OPA598 V+ pin
TP18GND point common to VDD and VSS test points
TP19VSS supply voltage connects to OPA598 V- pin

Table 2-4 lists the LED indicators, colors, and indications.

Table 2-4 LED Indicators
IndicatorLED ColorIndication
D5GREENVDD is applied to the OPA598EVM.
D6YELLOWOPA598 has been placed in output shutdown mode.
D7ORANGEThe OPA598 output is in current limit.
D8REDThe OPA598 is in thermal shutdown.