ADS7955 / Output code of this case

Ryuji

Guru 20090 points

Other Parts Discussed in Thread: ADS7955

Hello,

Please let me know the output code about ADS7955 on the below conditions.

+VA=5V or 4V

Vref =2.5V

Range 2

Analog input =2.5V

In this case, output code will be same on each +VA=5V or 4V.

Is my understanding correct ?

Best Regards,

Ryuji Asaka

over 10 years ago

0 Sandeep Kasargod over 10 years ago

TI__Expert 4405 points

Ryuji-san,

You are right.

The conversions and LSB size is defined by the Vref, not +VA. So for a given Vref the output code would be the same for +VA=4V or 5V, as long as the input signal is less than or equal to +VA.

Regards,

Sandeep

0 Ryuji over 10 years ago in reply to Sandeep Kasargod

Guru 20090 points

Hello Sandeep san,

Thank you for your reply.

I understood.

Best Regards,

Ryuji Asaka

Data converters

Data converters forum

ADS7955 / Output code of this case