> Maybe something like this...
> http://www.maxim-ic.com/app-notes/index.mvp/id/4627 >
>> -------- Original Message --------
>> Subject: [EE] Simple D/A converter?
>> From: Neil<picdude3@...>
>> Date: Wed, April 11, 2012 12:20 pm
>> To: piclist@... >>
>> Hi all,
>> Can any of you recommend a D-to-A converter with a single-wire
>> digital-side interface? As small as possible -- roughly SOT23-5 to
>> SSOP-8 would be good, 5V powered, 0-5V output (I'll actually do 0.5V to
>> 4.5V output with it).
>> Summary is that I need to add an analog output to an existing
>> PIC16F883-based circuit (already working on PCB), but only have one
>> general-purpose I/O available, and no PWM pins available. I can get
>> tons of I2C, SPI or other D/A converters, but not finding anything with
>> actual single-wire serial. FWIW, there's too much going on in the chip
>> to get any decent bit-banged PWM.
>> I can do this with a small PIC, but since I only need 25 or so of these,
>> I thought I'd check to see if anyone here knows of a purpose-built chip
>> for this, so that I can save coding time.
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