ADC121S051: Can fix CS pin to low always?

Hisao Uchikoshi

Part Number: ADC121S051

Hi Experts,

In order to access to ADC, CS and SCLK is required to read data over SDATA line. Can we use this ADC with CS pin tied to GND always and use only SCLK and read data outputting from SDATA pin?

Regards,

Uchikoshi

over 4 years ago

+1 Tom Hendrick over 4 years ago

TI__Guru**** 181781 points

Hi Uchikoshi-san,

No, the ADC121S051 goes into acquisition mode while /CS is hign and starts the conversion cycle once /CS toggles low. Please see the details in Figure 4 and the text that follows on page 7 of the datasheet.

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ADC121S051: Can fix CS pin to low always?