SLASF07 September 2023 DAC43901-Q1 , DAC43902-Q1
PRODUCTION DATA
The DAC43901-Q1 and the DAC43902-Q1 (DAC4390x-Q1) are 8-bitsmart DACs with an internal reference, programmable comparator. The DAC43901-Q1 supports logarithmic fade-in fade-out with PWM output. The DAC43902-Q1 supports sequential animation for automotive, turn indicator lights. DAC43901-Q1 and DAC43902-Q1 devices can be cascaded to create animation for more than four channels.
These smart DACs use the VREF/MODE pin to select between the programming mode (I2C or SPI) and standalone mode (PWM and TRIG-IN/OUT). The DAC4390x-Q1 provide nonvolatile memory (NVM) to store the register settings at factory using the I2C or SPI. After being programmed, these devices function autonomously without the need for a processor.
The PWM outputs are generated using the four digital pins. When PWM output mode is selected, one DAC channel is configured as a comparator to support the TRIG-IN input while the other DAC acts as an on/off voltage output to support TRIG-OUT.