How to use the LDAC pin on DACs (Digital-to-Analog converters)

The [latex]\overline{\text{LDAC}}[/latex] pin on Digital-to-Analog converters (DACs) provides a convenient way to tell the DAC when an output.

For example, if you have an 8-channel I²C DAC, you need to set the DAC registers for the channels one after another using the I²C protocol, but often you want all channels to change their analog outputs at the same time (after writing all the values to the corresponding registers).  The [latex]\overline{\text{LDAC}}[/latex] pin allows you to do that by driving it high (e.g. 3.3V).

Using it is simple: