If using a reference design involves your purchasing that vendor's components, should there be a cost involved with the reference design? Is it more appropriate for the design to be provided for free?
I just heard from the folks at Maxim, who are touting a new reference design called the Alameda -- a flexible, high-accuracy 4-channel bipolar analog output that is targeted at industrial automation applications.
Now, I fully understand the advantages of using a reference design, especially ones like the Alameda. It includes fully tested schematics, layout files, and firmware that are available for immediate use and/or customization. In addition to reducing risk and speeding design, this particular design is claimed to use integrated parts that reduce number of components by 33% compared to competitive designs.
I also understand that creating such a design involves the expenditure of time and money. One could certainly argue that such a design is a valuable commodity and that its creators deserve recompense.
On the other hand, I think this point of view could be better argued by someone who had created the reference design as a standalone activity. However, the fact is that actually implementing this reference design involves using a bunch of Maxim's parts as illustrated below:
As we see, this design boasts a MAX17498B flyback controller, a MAX1659 LDO, a MAX6216 voltage reference, a MAX5154 quad DAC, four MAX15500 signal conditioners, and a MAX14850 data isolation device. The way I've always understood the reference design concept is as an unspoken agreement along the lines of, "We show you how to do it, and then you do it using our components."
The bottom line was that I was a bit surprised to learn that there was a cost involved with regard to the Alameda reference design. I was even more surprised to be told: "Pricing is available on request." I bounced around the Maxim website to discover that the price of this reference design is $95 and the availability is "TBD."** (Following the ** leads us to a note saying "Please submit a quote to obtain lead-time for this part.")
I'm not sure what to think. First of all, I donít like being tempted with a reference design and then being told that I have to submit a quote to learn what the lead-time is going to be.
Hang on a moment. I think I understand. The Alameda isnít just schematics, layout files, and firmware -- it also includes a circuit board containing a physical implementation of the design, thereby allowing you actually to test the design in your main industrial control system. Well, that certainly makes more sense, and it also explains the price associated with this reference design and associated sub-system.
OK, so if there is a hardware portion of the reference design, then I can understand there being a cost involved. But what about a non-hardware reference design -- should this also come with a cost involved or -- if using the design involves your purchasing that vendor's components -- is it more appropriate for the reference design to be provided for free?
— Max Maxfield, Editor of All Things Fun & Interesting