Texas Instruments DACxx6xT Low Power Voltage-Output DACs

Texas Instruments DACxx6xT Low Power Voltage-Output Digital-to-Analog Converters (DACs) feature a 2.5V, 4ppm/°C internal reference, giving a full-scale output voltage range of 2.5V or 5V. The internal reference has an initial accuracy of ±5mV and can source or sink up to 20mA at the VREFIN/VREFOUT pin. These devices are monotonic, providing excellent linearity and minimizing undesired code-to-code transient voltages. They use a versatile three-wire serial interface that operates at clock rates up to 50MHz. These incorporate a power-on-reset circuit that ensures the DAC output powers up at zero scale until a valid code is written to the device. The DACxx6xT similarly powers up at mid-scale. These devices contain a power-down feature that reduces current consumption to typically 550nA at 5V. The low power consumption, internal reference, and small footprint make these devices ideal for portable, battery-operated equipment.

Features

  • Relative accuracy of 4LSB INL at 16-Bits
  • 0.1nVs Low glitch impulse
  • Bi-directional reference pin of input or 2.5V output
    • 4ppm/°C temperature drift (Typ)
  • Power-on reset to zero-scale or mid-scale
  • Low power of 4mW at 5V AVDD
  • 2.7V to 5.5V Wide power supply range
  • 50MHz SPI with Schmitt-Triggered inputs
  • LDAC and CLR functions
  • Output buffer with rail-to-rail operation
  • Pin-to-Pin compatible with DAC8562 family
  • 5V TTL I/O enabled
  • WSON-10 (3mm×3mm), VSSOP-10 Packages
  • -40°C to 125°C Temperature range

Applications

  • Portable instrumentation
  • PLC analog output module
  • Bipolar outputs
  • Closed-Loop servo control
  • Voltage controlled oscillator tuning
  • Data acquisition systems
  • Programmable gain and offset adjustment

Functional Block Diagram

Block Diagram - Texas Instruments DACxx6xT Low Power Voltage-Output DACs
Opublikowano: 2015-12-01 | Zaktualizowano: 2022-03-11