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opl3_module_modified [2014/01/28 11:04]
eptheca
opl3_module_modified [2014/01/28 11:40] (current)
eptheca
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 The [[http://​www.ucapps.de/​mbhp_opl3.html|MBHP_OPL3]] module originally has three TL074 op-amps, and a circuit that needs +/-12V bipolar power supply. The [[http://​www.ucapps.de/​mbhp_opl3.html|MBHP_OPL3]] module originally has three TL074 op-amps, and a circuit that needs +/-12V bipolar power supply.
  
-In Wilba and nILS sammichFM, they use two OPA4348 rail-to-rail op-amps, that can be powered by 5V.+In Wilba and nILS [[sammichfm|sammichFM]], they use two OPA4348 rail-to-rail op-amps, that can be powered by 5V.
  
 Sauraen suggested another 5V rail-to rail op-amp, the MCP6004, which is pin compatible with the TL074, and a way to modify the OPL3 module to use these.[[http://​midibox.org/​forums/​topic/​18492-mbfm-5v-option/​]] Sauraen suggested another 5V rail-to rail op-amp, the MCP6004, which is pin compatible with the TL074, and a way to modify the OPL3 module to use these.[[http://​midibox.org/​forums/​topic/​18492-mbfm-5v-option/​]]
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 - Bridge C20 pads (to supply Ground for the op-amps)\\ - Bridge C20 pads (to supply Ground for the op-amps)\\
 - Leave out bridges to IC6\\ - Leave out bridges to IC6\\
-- Use MCP6004 for IC3 and IC5\\+- Use MCP6004 for IC3 and IC5 (IC3 The op-amp, not the DAC, labeling error)\\
 - Supply 5V to the +12V pin, and Ground to Ground\\ - Supply 5V to the +12V pin, and Ground to Ground\\
  
opl3_module_modified.1390907088.txt.gz ยท Last modified: 2014/01/28 11:04 by eptheca