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.
Features
- 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
Applications
- Rear light
- Condition monitoring module
- Wired control
Functional Block Diagram
