TAA5242: single end SNR, DR

Toshiro Imi

Part Number: TAA5242
Other Parts Discussed in Thread: TAA5212

Tool/software:

Hello,

Our customer has a question about single end AC-coupled SNR, DR soecification or characteristics.
As the datasheet specifies SNR, DR in differential AC-coupled input specification.

- Can you let us know SNR, DR in single-end AC-coupled input specification or characteristics.

- Do we understand single-end SNR, DR expects -6db lower than differential spec below.

best regards,

2 months ago

0 Jeff McPherson 2 months ago

TI__Mastermind 46355 points

Hi Imi-san,

I'm not sure why the single ended specs are not showing in this datasheet. You can refer to TAA5212 for single ended specs. The input stage is the same between the two devices.

Because there is no PGA, ideally there is a -6dB loss of SNR and DNR. The actual loss is a little more than that due to differential having the additional benefit of common noise cancellation.

Best regards,
Jeff McPherson

0 Toshiro Imi 2 months ago in reply to Jeff McPherson

TI__Expert 7220 points

Hi Jeff-san,

Thank you for your feedback. I summarised single ended SNR and DR spec same ondition other than input mode, in order to clarify the SNR and DR differences.
Please check and let me know if something is incorrect.

Best regards,

T.Imi

TAA5242 single ended SNR DR.pdf