EEVblog Electronics Community Forum

Electronics => Projects, Designs, and Technical Stuff => Topic started by: Kremmen on December 11, 2016, 07:57:38 pm

Title: Is this a THS4151 diff amp or something else?
Post by: Kremmen on December 11, 2016, 07:57:38 pm

I recently got donated some components among which is a tape of SOIC8's labeled only as "4151". There is a second line "0412" that i assume is the mfg date code.
Nothing else save a round indentation and end notch for pin 1 orientation. Specifically, no mfg logo anywhere, just the 2 numeric codes.

Has anyone used a THS4151 and did they look like that? It would be a win if these chips actually were THS4151's but may be useful even if something else.

Title: Re: Is this a THS4151 diff amp or something else?
Post by: daveshah on December 12, 2016, 06:32:43 pm

Think TI SOIC8 parts always have the TI logo, and more codes that just the part number and date code - probably would have THS prefix at least.

More likely a 4151 voltage to frequency converter, made by a few different manufacturers.

Title: Re: Is this a THS4151 diff amp or something else?
Post by: Kremmen on December 12, 2016, 08:57:19 pm

Thanks, i was suspicious of the lack of logo as well. Most likely you are right and this is not a TI part but what you say.

Title: Re: Is this a THS4151 diff amp or something else?
Post by: daveshah on December 12, 2016, 09:10:34 pm

Could always build a test circuit, and with a suitably low current limit it would probably be non-destructive even if it wasn't the expected chip.

Title: Re: Is this a THS4151 diff amp or something else?
Post by: Kremmen on December 13, 2016, 11:08:59 pm

I got a good length piece of tape of chips so smoking a few won't matter. If it isn't a diff amp i don't mind burning them all since i have no use for V/f conerters.
I actually decided to do just this, so we'll see.