Dear Technical Support Team,
I'd like to use IR drop Sense function like DAC81404.
It costs more than I thought, so I would like to consider other methods
Do you have other DAC with IR drop sense function?
Could you provide any documentation or reference design for IR drop sense function of discrete AMP(outside IC) with if you have?
Best Regards,
ttd
Hi ttd,
I have the DAC53204 block diagram shown below:
Here is the DAC81404 block diagram:
You can see that the FB pin on the DAC53204 is connected to the inverting input of the output buffer, similar to the sense pin of the DAC81404. If you do not need the bipolar range and you are ok with the max VDD of 5.5V of the DAC53204, then it will work. This will depend on the drop of the IR drop that needs to be compensated for in your system.
I have the following two app notes that use the FB pin to sense the voltage drop of a transistor:
Smart DAC LED Biasing Circuit with Low-Power Sleep Mode
High-Side Current Source LED Biasing Circuit Using Smart DACs
Best,
Katlynne
