Texas Instruments DAC539G2-Q1 10-Bit Digital-to-Analog Converter

Texas Instruments DAC539G2-Q1 10-Bit Digital-to-Analog Converter (DAC) is an application-specific, look-up table (LUT) based GPI-to-PWM converter. This device has a 10-bit GPI-to-voltage output converter and a voltage-to-PWM converter. Both these circuits can be externally connected to create a GPI-to-PWM converter. Three GPIs are mapped to eight 10-bit digital codes representing the voltage output. There is a programmable delay at the GPIs to eliminate glitches on these inputs. The look-up table values are programmed using I2C or SPI and stored in the NVM. The GPIs are multiplexed with the I2C and SPI. The voltage-to-PWM converter uses a comparator with one input as a programmable sawtooth or triangle waveform and the other input as an external voltage input.

This device automatically detects I2C and SPI and has an internal reference. The Texas Instruments DAC539G2-Q1 is an excellent choice for fault communication in automotive stop-and-turn lights and similar industrial applications.


  • AEC-Q100 qualified for automotive applications
    • –40°C to +125°C, TA temperature grade 1 
  • Triple general-purpose inputs
  • PWM output using sawtooth or triangular waveform
  • 10-bit GPI-to-voltage output
    • 1LSB DNL
  • Automatically detected I2C and SPI
    • 1.62V VIH with VDD = 5.5V
  • MODE pin to select between programming and standalone modes
  • User-programmable nonvolatile memory (NVM)
  • Internal, external, and VDD reference
  • Option for PWM-frequency-error correction
  • Wide operating range
    • 1.8V to 5.5V power supply
  • 16-pin WQFN (3mm × 3mm) tiny package


  • Rear light
  • Condition monitoring module
  • Wired control

Functional Block Diagram

Block Diagram - Texas Instruments DAC539G2-Q1 10-Bit Digital-to-Analog Converter
Published: 2023-04-26 | Updated: 2023-09-15