DAC81416: DAC81416 Vcc positive power minimum requirements

Andrey Bolsky

Part Number: DAC81416

Hello.

I want to use this DAC in my new design. I have already on board two analog power rails: +7V and -4.5 V. In the data sheet minimum recommended Vcc voltage is +9V. But, I don't want to introduce new positive rail +9 V. Could I connect DAC's Vcc power to +7 V rail and negative Vss pin to -4.5V rail?

From DAC I need output voltage +-2.5V with current no more then +-1 mA per output.

Thank you in advance.

Andrey.

over 6 years ago

0 Kevin Duke over 6 years ago

TI__Mastermind 46290 points

Andrey,

We will need to check with the Designers responsible for this device to check the background behind the 9V minimum VCC supply recommendation. Specifically we will want to check whether there is any POR risk at lower VCC and if your current drive needs will still be met, or any other risks.

The design team is located in India for this part, so it will not be until Monday that we can get any input.

0 Uttam Sahu over 6 years ago in reply to Kevin Duke

TI__Genius 14220 points

Hi Andrey,

Could you please provide information on the points below:

1. What is the operating temperature range?
2. What is the type of load or max load? Will you be drawing 1mA from all channels simultaneously?

Regards,
Uttam Sahu
Applications Engineer, Precision DACs

0 Uttam Sahu over 6 years ago in reply to Uttam Sahu

TI__Genius 14220 points

Hi Andrey,

Do you have information on the questions in the last post?

Regards,
Uttam

0 Uttam Sahu over 6 years ago in reply to Uttam Sahu

TI__Genius 14220 points

I am closing th thread as there is no response. Please re-open if you have an update.

Regards,
Uttam

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DAC81416: DAC81416 Vcc positive power minimum requirements