AMC1304M05: What's the output waveform for AMC1304M05 while primary side is unpowered

Benjamin Zhou

Part Number: AMC1304M05

Hi Team,

What's the output waveform for AMC1304M05 while primary side is unpowered? the block diagram shown as below figure, if with F280049 SDFM filter, what's should be result? 0V or others?

Expect for your reply, thanks.

Best Regards

Benjamin

over 6 years ago

0 Tom Hendrick over 6 years ago

TI__Guru**** 168335 points

Hi Benjamin,

As noted in Figure 51 of the AMC1304M05 datasheet, the output will be either all ones or all zeros depending on the last known data state of the modulator. Your block diagram did not come through, but the SDFM filter would see this condition as either full scale MAX or full scale MIN.

0 Benjamin Zhou over 6 years ago in reply to Tom Hendrick

TI__Expert 4000 points

Tom,
I've found the fail-safe description in the datasheet , thanks very much.

Best Regards
Benjamin

Data converters

Data converters forum

AMC1304M05: What's the output waveform for AMC1304M05 while primary side is unpowered