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Texas Instruments DACx300x Ultra-Low-Power DACs

Texas Instruments DACx300x Ultra-Low-Power Digital-to-Analog Converters (DACs) are 12 or 10-bit ultra-low-power, single-channel and dual-channel, buffered voltage-output and current-output smart DACs. The DACx300x devices support Hi-Z power-down mode and Hi-Z output during power-off conditions. The DAC outputs provide a force-sense option for use as a programmable comparator and current sink. The multifunction GPIO, function generation, and NVM enable these smart DACs for processor-less applications and design reuse. These devices automatically detect I2C, PMBus, and SPI interfaces and contain an internal reference.

The feature set of the Texas Instruments DACx300x combined with the tiny package and ultra-low power make these smart DACs an excellent choice for many applications. These applications include land mobile radios, pulse oximeters, notebook PCs, and other battery-operated applications for biasing, calibration, and waveform generation.

Features

  • Programmable voltage or current outputs with flexible configuration
    • Voltage outputs
      • 1LSB INL and DNL (10-bit)
      • Gains of 1x, 1.5x, 2x, 3x, and 4x
    • Current outputs
      • 1LSB INL and DNL (8-bit)
      • Unipolar and bipolar output range options from 25µA to 250µA
  • 35µA/channel IDD in voltage-output mode
  • Programmable comparator mode for all channels
  • High-impedance output when VDD is off
  • High-impedance and resistive pulldown power-down modes
  • 50MHz SPI-compatible interface
  • Automatically detected I2C, PMBus™, or SPI interface
    • 1.62V VIH with VDD = 5.5V
  • General-purpose input/output (GPIO) configurable as multiple functions
  • Predefined waveform generation: sine, cosine, triangular, sawtooth
  • User-programmable nonvolatile memory (NVM)
  • Internal, external, or power supply as reference
  • Wide operating range
    • 1.8V to 5.5V power supply
    • –40˚C to +125˚C temperature
  • 16-pin WQFN (3mm × 3mm) tiny package

Applications

  • Land mobile radio
  • Pulse oximeter
  • Optical module
  • Standard notebook PC

Functional Block Diagram

Block Diagram - Texas Instruments DACx300x Ultra-Low-Power DACs

Texas Instruments DACx300x Ultra-Low-Power DACs