The DACx3401-Q1 are buffered, force-sense output, single-channel, DACs that include an NVM and internal reference and are available in a tiny 3 mm × 3 mm package. This device interfaces to a processor using I²C. There are 4 I²C addresses possible by configuring the A0 pin as shown in Table 7-5. The NVM allows processor-less operation of this device after programming at factory. The force-sense output can work with a transitor to create a programmable current sink that can bias LEDs. These digipots are designed for general-purpose applications in a wide range of end equipment. Some of the most common applications for these devices are power-supply margining and control, adaptive voltage scaling (AVS), set-and-forget LED biasing in automotive applications and mobile projectors, general-purpose function generation, and programmable comparator applications (such as standalone PWM control loops and offset and gain trimming in precision circuits).