The DAC63202W is a dual-channel buffered, force-sense output, voltage-output
and current-output smart DAC that includes an NVM and internal reference, and
available in a tiny 1.72-mm × 1.72-mm (nominal) package.
- In voltage-output mode, short the
OUTx and FBx pins for each channel. In current-output mode, leave the FBx pins
unconnected. The FBx pins function as inputs in comparator mode.
- The external reference must not
exceed VDD, either during transient or steady-state conditions. For the best
Hi-Z output performance, use a pullup resistor on the VREF pin to VDD. In case
the VDD remains floating during the off condition, place a 100-kΩ resistor to
AGND for proper detection of the VDD off condition.
- All the digital outputs are open
drain; use external pullup resistors on these pins.
- The interface protocol is
detected at power-on, and the device locks to the protocol as long as VDD is on.
- When allocating nonoverlapping
I2C addresses on a system I2C bus, consider the
broadcast address as well. I2C timeout can be enabled for
robustness.
- SPI mode is 3-wire by default.
Configure the GPIO pin as SDO in the NVM for SPI readback capability. The SPI
clock speed in readback mode is slower than that in write mode.
- Power-down mode sets the DAC
outputs in Hi-Z by default. Change the configuration appropriately for different
power-down settings. The DAC channels can also power-up with a programmed DAC
code in the NVM.