ADS62P24: the input signal range of ADS62P24

user6209928

Part Number: ADS62P24

Hello,

I have a question for the input signal range for ADS62P24. In my circuit, I want to set the input signal range to 2 Vpp through th ADS62P24 PIN setting. But in fact, by test the input signal range is just 1.5 Vpp. Could you help me to check what is the problem？ The circuit is in my attachment.2437.AD&DDS.pdf

over 4 years ago

0 user6209928 over 4 years ago

Prodigy 60 points

sorry, I have uploaded the wrong attachment. Now I upload the correct one.AD&DA.pdf

0 jim s over 4 years ago in reply to user6209928

TI__Guru* 91947 points

User,

You need to send a differential signal or you will lose dynamic range. It appears you are sending in a single-ended signal. What value is VCM?

Regards,

Jim

0 user6209928 over 4 years ago in reply to jim s

Prodigy 60 points

Hello,

Because my input signal frequency is from 50KHz to 1MHz, so I only can use single end input. Last night, I have found the reason of the range problem. In my SCH, I have pulled up the SCLK pin, but in the PCB I pulled down the PIN. After changed, the range has changed to 2 Vpp. Thanks for your reply.

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ADS62P24: the input signal range of ADS62P24