DAC43901RTERQ1

Digital To Analog Converters Overview

The DAC43901RTERQ1 is an automotive-grade, 8-bit smart digital-to-analog converter featuring two PWM outputs. It operates on a supply voltage of 1.7 V to 5.5 V and supports I2C, SPI, GPIO, and PWM interfaces. The device includes a programmable state machine for logarithmic dimming and sequential animation, with user-programmable nonvolatile memory (NVM) for processor-less operation. It is housed in a 16-pin WQFN package measuring 3 mm × 3 mm.

Digital To Analog Converters Feature Summary

• Integrated programmable state machine supporting logarithmic fade-in/fade-out and sequential turn indicator animations without external processors.
• Dual PWM outputs generated via multiplexed digital pins with configurable duty cycles and frequency settings.
• Automatic interface detection between I2C and SPI modes, selectable via the VREF/MODE pin.
• User-programmable nonvolatile memory (EEPROM) for storing configurations and ensuring predictable boot-up states.

Digital To Analog Converters Applications

• Automotive rear lighting systems
• Interior vehicle illumination control
• Sequential turn indicator animation

Digital To Analog Converters Procurement Notes

Verify the specific ordering suffix 'RTER' corresponds to the required tape-and-reel packaging format and quantity. Confirm that the AEC-Q100 Grade 1 qualification meets the thermal requirements for the target application environment. Ensure the design accounts for the 16-pin WQFN thermal pad connection to AGND for proper heat dissipation.

Digital To Analog Converters Selection Notes

Select this component when processor-less autonomous lighting control is required. The DAC43901-Q1 variant provides two PWM channels, whereas the DAC43902-Q1 offers four. Consider the internal reference accuracy or external reference needs based on system precision requirements. Verify compatibility with existing I2C or SPI bus voltages within the 1.7 V to 5.5 V range.

Digital To Analog Converters Part Context

This part belongs to the DAC4390x-Q1 family of automotive smart DACs designed specifically for lighting applications. It complements other Texas Instruments automotive analog components by providing integrated logic and timing functions typically requiring separate microcontrollers. The RTE package denotes the 16-pin WQFN form factor suitable for space-constrained PCB layouts.

Digital To Analog Converters Replacement Considerations

The DAC43902-Q1 serves as a functional substitute if additional PWM channels are needed. Other DAC4390x-Q1 variants may be considered if different channel counts or package options are available, provided the pinout and electrical characteristics remain compatible.