AWR2243: Wire Bond Length

robert hoff

Part Number: AWR2243

Hello,

I was wondering if I need to account for the wire bond length difference in the TX/RX and LVDS lines on the PCB routing, or if these traces should just be length match on the PCB layout.

Thanks

over 4 years ago

0 Vivek Dham over 4 years ago

TI__Guru 58035 points

Hello Robert,

For LVDS lines you don't have to worry about the wire bond length since the delay there is extremely small. You need to just match the traces on the board.

Regards,
Vivek

0 robert hoff over 4 years ago in reply to Vivek Dham

Intellectual 390 points

Hi Vivek,

What about the 77GHz TX and RX lines? Are these matched inside the chip?

Thanks

0 Vivek Dham over 4 years ago in reply to robert hoff

TI__Guru 58035 points

Hello Robert,

Under NDA we can provide HFSS models of the die + package. You need to match the RF transition to the PCB based on the impedances in the model. If you use the same PCB stackup (RF layer) as we have used in our EVM then you could just copy the transitions from our EVM design. If you are using the different stackup then you might need to tweek it a bit to match the impedance.

Regards,
Vivek

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AWR2243: Wire Bond Length