Texas Instruments DAC7678 Digital to Analog Converters

The Texas Instruments DAC7678 digital-to-analog converter (DAC) is a low-power, voltage-output, octal channel, 12-bit data converter. The TI DAC7678 includes a 2.5V internal reference (disabled by default), giving a full-scale output voltage range of 5V. The internal reference has an initial accuracy of ±5mV and can source up to 20mA at the VREFIN/VREFOUT pin. The TI DAC7678 DAC is monotonic, provides very good linearity, and minimizes undesired code-to-code transient voltages (glitch). The TI DAC7678 uses a versatile, 2-wire serial interface that is I2C-compatible and operates at clock rates of up to 3.4MHz. Multiple devices can share the same bus. The TI DAC7678 incorporates a power-on-reset circuit that ensures the DAC output powers up to either zero-scale or mid-scale until a valid code is written to the device.

Features

  • Relative accuracy: 1 LSB INL
  • Glitch energy: 0.15nV-s
  • Internal reference:
    • 2.5V reference voltage (disabled by default)
    • 5ppm/°C temperature drift (typ)
    • 20mA sink/source capability
  • Temperature range: -40°C to +125°C
  • Ultra-low power operation: 0.13mA/channel at 5V (without internal reference current)
  • Wide power-supply range: +2.7V to +5.5V

Applications

  • Portable Instrumentation
  • Closed-Loop Servo-Control
  • Process Control
  • Data Acquisition Systems
  • Programmable Attenuation
  • PC Peripherals

Block Diagram

Block Diagram - Texas Instruments DAC7678 Digital to Analog Converters

TI Reference Designs Library

TI Reference Designs - Texas Instruments DAC7678 Digital to Analog Converters
Published: 2010-12-06 | Updated: 2022-03-10