THVD8000: bandwidth, selectivity and SNR?

AnBer

Part Number: THVD8000
Other Parts Discussed in Thread: THVD8010, ,

Team,

Customer has measured the bandwidth (between Input A/B and output D). It seems that the bandwidth of the filter goes from 36kHz to 986khz (for OOK feequency of 125kHz).
-Shouldn't it be expected to have a narrower filter band in order to better separate the OOK signal from the interfering signals?

-Could you provide information about SNR and procedure/condition on how it is measured?

Thanks in advance!

over 4 years ago

0 Hao L over 4 years ago

TI__Mastermind 25705 points

It's a good question. The bandpass filter in the receiver is not really narrowband. Actually it doesn't have to be, since the receiver also detects the signal based on the information in voltage domain. To obtain better noise rejection, TI also releases a device with higher threshold voltage.

www.ti.com/.../THVD8010

Regards,

Hao