Difference between revisions of "UNI-OPAMP-04"

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* From [https://www.electroschematics.com/test-op-amps-via-simple-input-offset-voltage-measurement/ Test Op Amps Via Simple Input Offset Voltage Measurement]
 
* From [https://www.electroschematics.com/test-op-amps-via-simple-input-offset-voltage-measurement/ Test Op Amps Via Simple Input Offset Voltage Measurement]
 
* [[Benchtop_Power_Supply_DPS3005|DPS3005 Power Supply]]
 
* [[Benchtop_Power_Supply_DPS3005|DPS3005 Power Supply]]
 +
** 0.1A current limit
 +
** Use built in current meter to measure power supply current
 
* Measure using DMM Extec EX330
 
* Measure using DMM Extec EX330
 
** 0.1 mV resolution
 
** 0.1 mV resolution

Revision as of 15:53, 17 August 2022

Tindie-mediums.png 8 opamp, SMT version

UNI-OPAMP-04 FRONT 3D.png

Features

  • Universal OpAmp Board
    • Configurable through stuffing options for typical OpAmp circuits
    • Through hole parts
    • 14 pin DIP
    • 1/8 or 1/4W resistors
  • 4 Channels, 1 Quad OpAmp
  • Individual input and output headers per channel
  • Terminal block or header for power
  • Bypass capacitors
  • 59X49mm form factor
  • (4) 4-40 mounting holes

Typical OpAmps

Part LM324 MCP6004 NJM2060
Operating Voltage 3 to 30V 1.8V to 6V +/-4 to +/-18V
GBW Product 1.2 MHz 1 MHz 10 MHz
Output Current (mA) 10mA 23mA 25mA
Offset Voltage (max) 7mV 4.5mV 6mV

Connectors

UNI-OPAMP-04 CAD Rev1.PNG

J1-J4 - Inputs

  • Pinout
  1. Opamp + input
  2. Opamp - input
  3. GND
  • J1 - CH 1
  • J2 - CH 2
  • J3 - CH 3
  • J4 - CH 4

J5-J8 - Outputs

  • Pinouts
  1. Opamp Out
  2. GND
  • J5 - CH 1
  • J6 - CH 2
  • J7 - CH 3
  • J8 - CH 4

Configurations

  • The reference designs (below) are for the first channel.

UNI-OPAMP-04 Ch1 Rev1.PNG

  • The resistor mapping from the first channel on the schematic to the other channels are as follows.

Resistor Stuffing by Channel

UNI-OPAMP-04 CAD Rev1.PNG

OpAmp Ax-/Ix- Ax+/Ix+ Ax-/Qx Ax-/GND Ax+/GND Ax+/VCC
U1A R3 R5 R1 R2 R4 R6
U1B R10 R9 R12 R11 R7 R8
U1C R22 R19 R24 R23 R21 R20
U1D R15 R17 R13 R14 R16 R18

Reference Designs

Differential Amplifier

Differential Amplifier - Reference Design (AN31)

Ap31-OpAmp-DiffAmp.PNG

Differential Amplifier Stuffing Options

OpAMP-DiffAmp.PNG

Current to Voltage Converter

Current to Voltage Converter - Reference Design (AN31)

Ap31-OpAmp-Curr2Volts.PNG

Current to Voltage Stuffing Options

OpAMP-sch - Curr2Volts.PNG

Inverting Amplifier

Inverting Amplifier - Reference Design (AN31)

Ap31-OpAmp-InvAmp.PNG

Inverting Amplifier Stuffing Options

OpAMP-sch - InvAmp.PNG

Non-inverting Amplifier

Non-inverting Amplifier - Reference Design (AN31)

Ap31-OpAmp-NonInvAmp.PNG

Non-inverting Stuffing Options

OpAMP-sch - NonInvAmp.PNG

Schematic

Single Channel Schematic (Editable)

OpAMP-sch-EDITABLE.png

U1 Part A Schematic

UNI-UPAMP-04 PartA.PNG

U1 Part B Schematic

UNI-UPAMP-04 PartB.PNG

U1 Part C Schematic

UNI-UPAMP-04 PartC.PNG

U1 Part D Schematic

UNI-UPAMP-04 PartD.PNG

Test

Measure OpAmp Input offset voltages

Input-Offset-Voltage-Test-Schematic Ann.png

Voltage Offset Measurements

  • LM324N
    • Channel A, 0.1mV
    • Vcc = 12V
    • Icc = 2mA
  • NJM2080D
    • Channel A, 0.2mV
    • Channel B, 0.4mV
    • Channel C, 0.7mV
    • Channel D, 0.6mV
    • Vcc = 12V
    • Icc = 8mA
  • MCP6004
    • Channel A, <0.1mV
    • Channel B, 0.8mV
    • Channel C, 1.3mV
    • Channel D, 1.1mV
    • Vcc = 5V
    • Icc = 1mA

Mechanicals

UNI-OPAMP-04 REV1 MECHS.PNG

Videos

Assembly Sheet