DAC81404EVM: Different DEVICEID for chip on Evaluation Board?

Dennis P.

Part Number: DAC81404EVM
Other Parts Discussed in Thread: DAC81404, DAC81402, DAC61404, DAC61402

Hello,

I tried to do some kind of sanity check when my software starts up. So I read out the DEVICEID register (address 0x01) which gives me 0x0a70 which is an isolated Device ID of 0x029c.

In the datasheet it states that the Device ID is supposed to be 0x0298 (0x0a60 for whole register).

All other registers read out fine, so I don't think there is an error in the software but I can doublecheck with an oscilloscope to be sure.

Are there different IDs for the single chip and the one on the evalboard or is there a mistake in the datasheet?

My Setup:

- DAC81404EVM

- External Microcontroller with self-written software

Best Regards

Dennis

over 2 years ago

0 Katlynne Jones over 2 years ago

TI__Mastermind 30658 points

Hi Dennis,

There was a recent post from another e2e user about the DAC81404EVM and they read back the same device ID that you have. So as far as your sanity check, you are reading back a valid number. We don't typically use different device IDs for the EVM because they are populated with the same devices that are used on the TI store. This leads me to think there is a mistake in the datasheet. I will double check with my team and see if they can confirm what the correct device ID is.

Best,

Katlynne Jones

0 Dennis P. over 2 years ago in reply to Katlynne Jones

Prodigy 10 points

Hello Katlynne,

Thanks for your fast reply. Out of pure curiosity, can you point me to that post? I searched the forum wether anyone has the same issue, but I couldn't find something.

Best Regards

Dennis

+1 Katlynne Jones over 2 years ago in reply to Dennis P.

TI__Mastermind 30658 points

Hi Dennis,

Sure, here is the link to the other post: https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1043044/dac81404evm-cannot-set-dac-output-registers They weren't specifically asking about the device ID, but you can see that when they read back the registers they also see 0xA70 for register 0x01.

I did hear back from my team and they confirmed that the device IDs were programmed as:

DAC81404 : 0x029C
DAC81402 : 0x0298
DAC61404 : 0x024C
DAC61402 : 0x0248'

It looks like the device IDs were swapped between the DACx1404 and DACx1402 datasheets. Thank you for helping catch this mistake!

Best,

Katlynne Jones

0 Dennis P. over 2 years ago in reply to Katlynne Jones

Prodigy 10 points

Thank you very much! That resolved my question

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DAC81404EVM: Different DEVICEID for chip on Evaluation Board?