DAC7718: Architecture of output stage

Shinichi Inoue

Guru 21221 points

Part Number: DAC7718

Dear Specialists,

My customer is considering DAC7718 for Analog Voltage Output and has questions.

Could you please advise?

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(1) I'd like to know the architecture of output stage in more detail. The datasheet is not enough.

(2)When AVDD is 24V, how is over voltage protection circuit added?

If possible, could you please send an application note or a reference circuit.

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I appreciate your great help in advance.

Best regards,

Shinichi

over 7 years ago

0 Uttam Sahu over 7 years ago

TI__Genius 14220 points

Hi Shinichi,

Thank you for your query. For question 1, if you could ask a more specific question I can check with the design team and get back. We will not be able to share the design level architecture. For question 2, you can refer to the following TI designs:

www.ti.com/.../TIPD153

www.ti.com/.../TIPD158

www.ti.com/.../TIPD155

www.ti.com/.../TIPD216

www.ti.com/.../TIDA-00559

www.ti.com/.../TIPD190

Although there is no direct answer to your specific question, you can also look into the Electrical Overstress (EOS) section of the TI Precision Labs: www.ti.com/.../precision-labs.html

Regards,
Uttam Sahu
Applications Engineer, Precision DACs

0 Shinichi Inoue over 7 years ago in reply to Uttam Sahu

Guru 21221 points

Hi Uttam,

Thank you for your reply.

The customer also would like to know power stage DAC7718 device inside.

Could you please provide the imformation.

I appreciate your great help.

Best regards,
Shinichi

0 Uttam Sahu over 7 years ago in reply to Shinichi Inoue

TI__Genius 14220 points

Hi Shinichi,

I am checking this with the internal team. Will get back as soon as I hear from them. I may not be able to share the data over public forum. Could we take this over e-mail? I couldn't find youe exact email id. Could you please send me a mail on this? My id will be available in the "Assigne To" field.

Regards,
Uttam

0 Shinichi Inoue over 7 years ago in reply to Uttam Sahu

Guru 21221 points

Hi Uttam,

Thank you for your reply.

My email addres is listed below.

inoue@fujiele.co.jp

I am looking forward to waiting for your response.

I appreciate your great help and cooperation.

Best regards,

Shinichi

0 Uttam Sahu over 7 years ago in reply to Shinichi Inoue

TI__Genius 14220 points

Hi Shinichi,

I checked with the design team and they want specific questions like: do you want information on power sequencing, power-on reset or power down.

Regards,
Uttam

0 Shinichi Inoue over 7 years ago in reply to Uttam Sahu

Guru 21221 points

Hi Uttam,

Thank you for your reply.

The customer wants to obtain any information.

I think these are helpful to him.

First of all, could you please send a output stage, and then sequence information.

I appreciate your great help and cooperation.

Best regards,

Shinichi

0 Uttam Sahu over 7 years ago in reply to Shinichi Inoue

TI__Genius 14220 points

Hi Shinichi,

I am closing this thread. We can take the discussion over email.

Regards,
Uttam

0 Shinichi Inoue over 7 years ago in reply to Uttam Sahu

Guru 21221 points

Hi Uttam,

I understand the discussion is changed to email.

Best regards,

Shinichi

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DAC7718: Architecture of output stage