Hi all,
I am trying to do more or less the same thing that fxmech was, but want to do it (-5v to +5v from 0 to +5V, gain of 2 and offset of -5v) using three LM828 charge pumps (two in series to generate -10V per the datasheet, and a third to get +10) and a LM358 opamp instead of the TL082 used in the mentioned thread.
I'm good with digital circuit design, but know very little about analog circuits. Tried to install LTSpice, but can't figure how to find the LM828 or LM358, or how to add those components to LTSpice for that matter.
What I want to do is make an arduino shield that uses the TDA1543 dual 16-bit DAC, to generate a -5 to +5v signal using the arduino +5V (USB) supply. The purpose is to drive those ebay galvos with enough precision to make a small laser cutter/sintering printer.
I am trying to do more or less the same thing that fxmech was, but want to do it (-5v to +5v from 0 to +5V, gain of 2 and offset of -5v) using three LM828 charge pumps (two in series to generate -10V per the datasheet, and a third to get +10) and a LM358 opamp instead of the TL082 used in the mentioned thread.
I'm good with digital circuit design, but know very little about analog circuits. Tried to install LTSpice, but can't figure how to find the LM828 or LM358, or how to add those components to LTSpice for that matter.
What I want to do is make an arduino shield that uses the TDA1543 dual 16-bit DAC, to generate a -5 to +5v signal using the arduino +5V (USB) supply. The purpose is to drive those ebay galvos with enough precision to make a small laser cutter/sintering printer.