ADS1115: ADS1115-NACK

switch

Expert 2375 points

Part Number: ADS1115

Hi Ti Team，

I write (0x01, 0x82eb) after power-on, return value -2, meaning NACK, what may be the cause?

over 2 years ago

0 Aaron Estrada over 2 years ago

TI__Mastermind 22950 points

Hello Switch,

I close your duplicate post and will be supporting you from here moving forward.

Where exactly is the NACK happening? Is it possible to send over s scope shot or logic analyzer plot of the I2C transactions as well as a schematic? If so, that would be very helpful.

Regards,

Aaron Estrada

0 switch over 2 years ago in reply to Aaron Estrada

Expert 2375 points

Hi Aaron,

Below is the schematic diagram and waveform

0 Aaron Estrada over 2 years ago in reply to switch

TI__Mastermind 22950 points

Hi Switch,

I see the NACK here. What is the SCL frequency? Is it possible to get a close up image of SCL and measure the tlow and thigh timings as per the data sheet?

Regards,

Aaron Estrada

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ADS1115: ADS1115-NACK