STHV748 anti-memory effect

[nstc001]

Posted on June 18, 2014 at 12:05

what is the anti-memory effect circuit and how does it benefit performance in case of 3-level/CW configuration?

#ultrasound

[ricotti.giulio]

Posted on September 17, 2014 at 08:41

Dear Reel,

thanks for your question.

The anti-memory function works automatically and it is fully transparent at the user, it performs a very important feature in terms of signal quality, because all the internal HV nodes are ''restored'' to gnd before eahc pulse, in this way it cancels any possible correlation to the preview HV pulse generated.

In CW mode, this funtion is automatically disabled because generally in CW the tranition is negative-to positive-to negative without passing through the gnd clamp.

In 3 level, this function is still working during the clamp phase, but if the pulsers amplitude is costant, there is no contribution.

Please don't hesitate to ask for other informations.

Best Regards

Giulio Ricotti