LMX2592: How can we get the Isolation if RFout A and RFoutB have different frequency.

Lian Wu

Genius 5250 points

Part Number: LMX2592

Dears:

There is other issue about LMX2592.

How can we get the Isolation if RFout A and RFoutB have different frequency.

For example, how many Isolation if RFout A is 3GHz, and RFoutB is 6GHz.

Pls. give some advice?

over 4 years ago

0 Hao Z over 4 years ago

TI__Mastermind 18070 points

Hi Luck,

The crosstalk between the two outputs will be high.

One way to reduce the cross talk is to use two separate power supplies for the pull-up resistors of two outputs.

Regards,
Hao

0 Lian Wu over 4 years ago in reply to Hao Z

Genius 5250 points

Hi Hao:
Is there any testing data about Isolation if RFout A is 3GHz, and RFoutB is 6GHz?
Customer wants to comparing them.

0 Noel Fung over 4 years ago in reply to Lian Wu

TI__Guru* 81510 points

Hi Luck,

I measured an EVM, the isolation is better than 30dB.

Clock & timing

Clock & timing forum

LMX2592: How can we get the Isolation if RFout A and RFoutB have different frequency.