THS5671EVM: Run the DAC off single supply (analog) instead of +/-5V

Kendall Farnham

Part Number: THS5671EVM

I'm hoping to use the THS5671A to convert from an FPGA output to custom analog input board, but we are using single supply (+5V) for all our components. The DAC datasheet says it is specified for 5V analog supply as well as +/-5V, but the eval module appears to need the dual supply. Is it possible to run the eval module from a single 5V supply? If so, what would be the correct way to supply the board's power? I have a reference 2.5V supply for our op amps available as well.

over 4 years ago

0 jim s over 4 years ago

TI__Guru* 91947 points

Kendall,

If you connect 5V to pin 1 of both J2 and J4 and return to pin 2 of both J2 and J4, you can operate the board using the transformer output. If you want to use the amplifier on this board without -5V, please contact the amplifier forum to see if this is even possible.

Regards,

Jim

0 Kendall Farnham over 4 years ago in reply to jim s

Prodigy 40 points

Thanks Jim. I checked the op amp datasheet, and you're right - it needs a minimum of +/- 4.5V. Is it possible to use a different amplifier in its place?

0 jim s over 4 years ago in reply to Kendall Farnham

TI__Guru* 91947 points

Kendall,

I cannot answer this. Our group only supports data converters. Please post this question with the amplifier forum.

Regards,

Jim

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THS5671EVM: Run the DAC off single supply (analog) instead of +/-5V