FPGA I/O --> 50ohm TTL line driver

Vince Cano

I need to drive a 50ohm TTL load with a LVTTL FPGA I/O. The FPGA I/O can only source ~24mA. What would you recommend I use to have enough swing / current drive capability to drive the 50ohm TTL load?

I have a 5VDC supply available for this application. Please be as specific as possible, as my background associated with analog circuitry is minimal. Thanks~

over 11 years ago

0 Michael Peffers over 11 years ago

TI__Mastermind 20820 points

Hi Vince,

Are you looking for a TTL repeater/redriver (TTL in TTL out)?

Regards,

Mike

0 Vince Cano over 11 years ago in reply to Michael Peffers

Prodigy 20 points

Hi Mike

Yes, capable of driving 50 ohm loads (60-100mA)

0 Michael Peffers over 11 years ago in reply to Vince Cano

TI__Mastermind 20820 points

Hi Vince,

My group does not support devices like this and I am not privy to any part numbers from other groups to refer you to. Try looking through the logic groups parts http://www.ti.com/lsds/ti/logic/non-inverting-buffer-driver-products.page#p776=TTL;LVTTL&p116=LVTTL;TTL. I think you will have better luck there.

Regards,

Mike

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FPGA I/O --> 50ohm TTL line driver