DAC101S101:Digital feedthrough waveform

Takehiro Sato

Intellectual 2975 points

Part Number: DAC101S101
Other Parts Discussed in Thread: DAC8830

Hello Team,

The datasheet described the digital feedthough is 0.5nV-s. however my customer request waveform similar as following.

(This waveform from DAC8830 datasheet)

Is the data of digital feedthough waveform as reference available?

Best regards,

Sato

over 3 years ago

0 Katlynne Jones over 3 years ago

TI__Mastermind 42253 points

Hi Sato-san,

I doubt we have a plot like that for this device. Sanjay can check if we have any related data after the weekend.

Best,

Katlynne Jones

0 Katlynne Jones over 3 years ago in reply to Katlynne Jones

TI__Mastermind 42253 points

Hi Sato-san,

This device is quite old, I was not able to find more information.

Best,

Katlynne Jones

0 Takehiro Sato over 3 years ago in reply to Katlynne Jones

TI__Intellectual 2975 points

Hi Jonew-san,

Thank you for your reply.
The customer wants to know how much peak voltage the digital feedthrough will appear over how long.
Can I refer to other products if they have similar characteristics?

Best regards,

Sato

0 Katlynne Jones over 3 years ago in reply to Takehiro Sato

TI__Mastermind 42253 points

Hi Sato-san,

I checked the datasheet of all other devices in the family and they all gave the same 0.5nV-s spec and no figure. The digital feedthrough occurs mainly because of the fast rise times of the digital signals and the board layout. This spec is heavily dependent on board layout which is why we don't provide a maximum number. A figure like the one you shared from the DAC8830 wouldn't necessarily translate to the glitch the customer would see and that may be why the engineers did not include it when creating the datasheets for this family.

Best,

Katlynne Jones

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DAC101S101:Digital feedthrough waveform