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Texas Instruments DACx3508 Octal Buffered Voltage Output DAC

Texas Instruments DACx3508 Octal Buffered Voltage Output Digital-to-Analog Converter (DAC) are 10-bit (DAC53508), 8-bit (DAC43508), and 12-bit DAC63508 low-power, eight-channel, voltage-output, DACs. The DACx3508 are monotonic by design across a wide power supply range from 1.8V to 5.5V. Using an external reference, the DACx3508 provides a full-scale output voltage range of 1.8V to 5.5V while consuming 0.1mA quiescent current per channel. The DACx3508 also includes per-channel, user-programmable, and power-down registers. These registers facilitate the DAC output buffers to start in a 10kΩ-AGND power-down state and remain in this state until a power-up command is issued to these output buffers.

Low quiescent current, wide power-supply range, octal channel, and a per-channel power-down option make the DACx3508 excellent for high-density, low-power, battery-operated systems. The Texas Instruments DACx3508 devices communicate through the 3-wire (write-only) SPI interface. These devices also have a load DAC (LDAC) and clear CLR inputs.

Features

  • ±1LSB INL and DNL
  • Wide operating range
    • 1.8V to 5.5V power supply
    • –40°C to +125°C temperature range
  • 3-wire SPI interface
    • VIH = 2.4V for 2.7V ≤ VDD ≤ 5.5V
    • VIH = (VDD – 0.3V) for 1.8V ≤ VDD ≤ 2.7V
  • LDAC pin for simultaneous output update
  • Very-low power (0.1mA/channel at 1.8V)
  • Low-power start-up mode (outputs powered down with 10kΩ to AGND)
  • Tiny package
    • 16-pin WQFN (3mm x 3mm)

Applications

  • Multifunction printer
  • Display panel for TV
  • OLED TV
  • Virtual reality headset
  • Currency counter
  • Automatic teller machine (ATM)

Functional Block Diagram

Block Diagram - Texas Instruments DACx3508 Octal Buffered Voltage Output DAC
Published: 2022-03-04 | Updated: 2024-07-18