PSoC 5, 3 & 1 MCU

[Anonymous]

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

[JoMe_264151]

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

       

Bob

[ETRO_SSN583]

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.

[Anonymous]

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

[Anonymous]

LTC2642