ADS7852: ADS7852

Rajashekhar Reddy

Part Number: ADS7852

Tool/software:

Hi, For ADS7852, what is clock min and max level, I am planning to to 8MHz TCXO, its max VOH is 2.6V. If i use this clock (VOH is 2.6), will the device work in properly?

Thanks,

5 months ago

0 Tom Hendrick 5 months ago

TI__Guru**** 180991 points

Hi Rajashekhar,

Welcome to our e2e forum! The digital I/O levels listed in the table on page 3 of the ADS7852 datasheet show 3.0V as the minimum input high level, so the 2.6VOH of the TXCO may not work reliably. You need to be at least at the 3.0V level.

0 Rajashekhar Reddy 5 months ago

Prodigy 10 points

Hi Tom,

OK Understood, but as of now 8MHz TCXO's are not available with a supply voltage of +5V,.

Currently 3.3V TCXO's are available with an output voltage (VOH=0.8 x 3.3V= 2.64) So, can we use a Voltage Level Translator (TXB104) at the output of a TCXO to upconvert 2.64V to 5V?

Please suggest whether we can use a Voltage Level Translator for CLK voltage switching.

Regards,

RR.

0 Tom Hendrick 5 months ago in reply to Rajashekhar Reddy

TI__Guru**** 180991 points

Hi RR,

Yes - using a level translator would be fine.

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ADS7852: ADS7852