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PSoC 5, 3 & 1 MCU

Anonymous
Not applicable

From my master can I send 16 data to a 16 bit DAC? If so can the PSOC3 perform this task or do I need the PSOC5

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Esteemed Contributor II

The PSoC can send via I2C 16-bit data, but you will not find a 16-bit DAC in the PSoC world.

   

 

   

Bob

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Esteemed Contributor

Of course you can get I2C external 16 bit DACs, or you could use PSOC 3/5,

   

16 bit PWM, to build a DAC. Its inherently montonic, requires a LP filter, usually

   

simple RC. Filter BW trades off settling time for ripple. Generally speaking this

   

approach is slower than a ladder DAC, but if you do not need speed its a great

   

way of getting hi res DAC.

   

 

   

If you need absolute accuracy run the PWM out thru a pin whose reference is

   

a known accurate value, or derive Vdd from a reference.

   

 

   

Attached an ap note on design considerations.

   

 

   

This approach cannot be used for audio. Or fast motor control.

   

 

   

Regards, Dana.

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Anonymous
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Hi pnielsen3,

   

 

   

It is possible to interface I2C based external DAC with PSoC 3 or PSoC 5. What is the part number of the DAC you planning to use?

   

 

   

Regards,

   

Gautam Das

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Anonymous
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LTC2642

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