SBOU268 November   2021 OPA593

 

  1.   Trademarks
  2. 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
  3. 2Operation
    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
  4. 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 +2 V/V
        1. 3.2.2.1 External Connections to OPA593EVM 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 Jumper Shunt Locations for Improved Howland Current Pump Configuration
  5. 4Schematic, PCB Layout, and Bill of Materials
    1. 4.1 EVM Schematic
      1. 4.1.1 EVM Default Configuration
    2. 4.2 PCB Layout
    3. 4.3 Bill of Materials

2.1 Jumper Blocks, Jacks, and Test Points

The OPA593EVM 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 Block Connection When Jumper Shunt Installed Across Jumper Block
JP1 Ri1 (10 kΩ) from VIN– jack J5 to OPA593 –IN pin
JP2 Ri1 (10 kΩ) input end to GND
JP3 Ri1 (1 kΩ, 2 W) from VIN– jack J5 to OPA593 –IN pin
JP4 Ri1 (10 kΩ) input end to GND
JP5 VIN+ jack J9 to OPA593 +IN pin
JP6 VIN+ jack J9 to OPA593 +IN through R4 (10 kΩ)
JP7 VIN+ jack J9 to OPA593 +IN through R5 (1 kΩ, 2 W)
JP8 OPA593 IN+ pin to GND
JP9 R8 (10 kΩ) from OPA593 +IN pin to GND
JP10 R9 (49.9 Ω, 2 W) from OPA593 +IN pin to GND
JP11 OPA593 in shutdown (SD) mode
JP12 Rcl1 (237 kΩ) to GND sets the short-circuit current to 50 mA
JP13 Rcl2 (90.9 kΩ) to GND sets the short-circuit current to 100 mA
JP14 Rcl3 + R13 (41.2 kΩ + 422 Ω) to GND sets the short-circuit current to 150 mA
JP15 Rcl4 (16.9 kΩ) to GND and sets the short-circuit current to 200 mA
JP16 Rcl5 (2.32 kΩ) to GND sets the short-circuit current to 250 mA
JP17 Two of 3 pins used to reference EDcom to either VSS or GND
JP18 RF1 (10 kΩ) in OPA593 feedback path
JP19 RF2 (1 kΩ, 2 W) in OPA593 feedback path
JP20 RF3A, RF3B, Rx1, Rx2 network in OPA593 feedback path
JP21 RL (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
Jack Function
J1 NA
J2 NA
J3 NA
J4 NA
J5 OPA593 VIN- input, BNC female connector
J6 V+ power supply and GND terminal block (screw type)
J7 V- power supply and GND terminal block (screw type)
J8 NA
J9 OPA593 VIN+ input, BNC female connector
J10 NA
J11 OPA593 VOUT, BNC female connector
J12 OPA593 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 Point Function
TP1 Connected to VIN- input jack
TP2 GND point for VIN- TP1
TP3 OPA593 -In input pin
TP4 Connected to VIN+ input jack
TP5 GND point for VIN+ TP4
TP6 OPA593 +In input pin
TP7 GND point near TP9
TP8 OPA593 Thermal Flag pin
TP9 OPA593 Current Flag pin
TP10 OPA593 OUT pin
TP11 GND point near TP10
TP12 Test point in middle of Rx1, Rx2 feedback network circuit
TP13 GND point near TP12
TP14 Connected to VOUT jack
TP15 GND point near TP14
TP16 GND point near TP8
TP17 VDD supply voltage connects to OPA593 V+ pin
TP18 GND point common to VDD and VSS test points
TP19 VSS supply voltage connects to OPA593 V- pin

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

Table 2-4 LED Indicators
Indicator LED Color Indication
D5 GREEN VDD is applied to the OPA593EVM.
D6 YELLOW OPA593 has been placed in output shutdown mode.
D7 ORANGE The OPA593 output is in current limit.
D8 RED The OPA593 is in thermal shutdown.