Digital to analogue converter

Jul 24, 2009 3 Replies

Hello,



I am in need of some info on a digital to analogue converter. I am using a picaxe microcontroller to controll a stepper motor via a stepper motor pulse generater and microstep driver as bought from ocean controls. The pulse generator has in one of its options a 5k pot input so you can set two out put frequencies and vary between them using the pot. I want to eliminate the pot and have the micro do it. I need info on a readliy available DIP IC which has either parallel or serial input or both, 8 bit resolution, single polarity 5volt for instance, voltage output and a ref pin which I can connect the 5v ref from the pulse generator.



I have found data on a max522 which looks like it would do the job but farnell only have it in surface mount which is beyond my soldering skills.



Any help would be much appreciated.


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"bigpete" wrote in

can you use the microcontroller to send the pulses directly? You're going digital to analogue purely to make a single digital output.

Herc

"bigpete" wrote in message news:h4b1s4$lsr$ snipped-for-privacy@news.eternal-september.org...

The regulars on this forum are very helpful

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"bigpete" wrote in message news:h4b1s4$lsr$ snipped-for-privacy@news.eternal-september.org...

MAX550

8 bit DIP with SPI input. Get them as a sample from Maxim.

Works a treat..

Bill www.electronworks.co.uk Electronic Kits for Education and Fun

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