DAC8750: DAC8750 circuit design

user4499359

Part Number: DAC8750

Make a 4-20mA circuit in accordance with the circuit diagram in the manual. The unused pins are floating.
It is advisable to ask if the EN1 EN2 of ISO7631 is floating or connected to the power supply.

over 6 years ago

0 Garrett Satterfield over 6 years ago

TI__Expert 5820 points

Hi,

EN1 and EN2 are the enable pins for the isolation device. They should be either tied high or left floating to enable the device for successful communication with the DAC8750.

Thanks,

Garrett

0 user4499359 over 6 years ago in reply to Garrett Satterfield

Intellectual 450 points

My other question is whether the unused pins of the DAC8750 in the schematic are floated or otherwise. Such as BOOST CAP1 CAP2 and so on, is how to deal with.

0 Garrett Satterfield over 6 years ago in reply to user4499359

TI__Expert 5820 points

Hi,

BOOST, CAP1, and CAP2 can be left floating if you are not using the external transistor.

Thanks,
Garrett

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DAC8750: DAC8750 circuit design