I'm relatively new to electronics and have never used a DAC before. I have a DAC0800 and a LF351N op-amp and have tried to set them up so that I can have a voltage output determined by the 8 digital inputs to the DAC.
My plan is to eventually connect the DAC inputs to the outputs of an EEPROM chip. The analog output of the DAC will then connect to the control pin of a 555 timer, to change its frequency.
To power it, I am using four 1.5V AA batteries in series to give 6V.
I was wondering whether anyone has any experience with this chip or circuit diagrams that could help me figure it out? It's the power that's the issue - the examples I can find usually use a dual rail supply of more than 6V, but I'd like to avoid that if possible. Alternatively, is there an easier way of producing a square wave of digitally-controlled frequency, than using a DAC connected to a 555 timer?