[amol]

Any DAC by burrbrown, or AD with higher specs with the AK4381 ? want to try swapping DAC on the M audio revolution's front out.

 

[amol]

Anyone?

 

[Wodgy]

DACs aren't usually pin-compatible with each other.

Even if they were, the original chip is a 16pin TSSOP package (i.e. 0.65 mm pin pitch). Unless you're an expert at soldering, it'll be almost impossible to swap another chip in successfully without damaging the chip you're removing or damaging the pads it's soldered to. I probably wouldn't try it.

 

[Glassman]

Quote:

Originally posted by Wodgy DACs aren't usually pin-compatible with each other. Even if they were, the original chip is a 16pin TSSOP package (i.e. 0.65 mm pin pitch). Unless you're an expert at soldering, it'll be almost impossible to swap another chip in successfully without damaging the chip you're removing or damaging the pads it's soldered to. I probably wouldn't try it.

I don't think its such a problem.. I've done a lot of work with SSOP chips, namely Burr Brown DACs.. they're also 0.65mm pitch - no problem.. the problem is that he's not gonna find anything else than AK4382A, which is a younger and bettered brother to AK4381 and is pin compatible.. I've told him, but he apparently don't believe me

 

[Wodgy]

Have you removed an SSOP device and soldered another in its place? Without damaging the removed device or the pads? Wow. Any tips for doing this properly?

 

[Glassman]

patience, patience Wodgy

yes I did that.. on top of that it was not a professional board, it was home etched.. professional board can stand more stress..

I usually solder one side of the chip together, heat it and lift using some needle or such.. then do the same with the other side and it's done.. you should be quick in order not to heat the chip longer than necessary..

 

[xtreme4099]

heh i already told him the same thing glassman ... amol ... you goof

 

[aos]

Removing SSOP without damaging pads is extremely hard. Unless you can afford to destroy the chip, in which case just use sharp knife to cut the pins and then it's trivial. I've never successfully removed a SSOP otherwise, but lifiting one pin at the time should work... and take a VERY long time, and still carry a lot of risk.

 

[maczrool]

Use ChipQuik. The chip and the pads should both survive.

Stu

 

[amol]

I asked AKM for the samples , but they dont respond back