Eurocrack opamp

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Testing of opamps for Eurocrack module

  • see [Nurdspace eurorack raspberry pi hat]


method of testing

  • sine wave from Doeper A-147 VCLFO module
  • most opamps were tested with a 33k resistor from output to inverting input of the opamp. the best opamp was also tried with 30k ohm.
  • most opamps showed clipping

TL072

Tl072.png

LM358P

Cm358p.png

MCP6002

Mcp6002.png

Also tried with 30k resistor as with 33k, the ADC used (MCP3008) clipped too much:

Mcp6002 30k.png