ADS5407: Serial Control signals

SVJS

Part Number: ADS5407

We are interfacing ADS5407 ADC with Xilinx FPGA. we have a design doubt regarding the SPI control signals. Is it required of any pull up / pull down for SDO, SDENB, SDIO signals?

over 1 year ago

0 jim s over 1 year ago

TI__Guru* 91947 points

SVJS,

All of the SPI signals have weak 50K Ohm internal pull-down resistors. The Xilinx FPGA should be able to drive these without any external pull-up resistors. You may want to check the drive capability of the pins but I think you will be fine.

Regards,

Jim

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ADS5407: Serial Control signals