Texas Instruments DACx1001 Digital-to-Analog Converters (DACs)

Texas Instruments DACx1001 Digital-to-Analog Converters (DACs) are highly accurate, low-noise, voltage-output, single-channel, digital-to-analog converters (DACs). The DACx1001 are specified monotonic by design and offer excellent linearity of less than 4LSB (max) across all ranges. The unbuffered voltage output provides low noise performance (7nV/√Hz) in combination with a fast settling time (1µs). This feature makes this device an excellent choice for low-noise, fast control-loop, and waveform generation applications. The DACx1001 integrates an enhanced de-glitch circuit with a code-independent ultra-low glitch (1nVs) to enable clean waveform ramps with ultra-low total harmonic distortion (THD). Texas Instruments DACx1001 incorporates a power-on-reset circuit so that the DAC powers with known values in the registers. With external references, DAC output ranges from VREFPF to VREFNF, including asymmetric output ranges, can be achieved. The DACx1001 uses a versatile 4-wire serial interface that operates at clock rates of up to 50MHz. The Texas Instruments DACx1001 is specified over the industrial temperature range of -40°C to +125°C.

Features

  • 1LSB DNL (max) 20-bit monotonic
  • 4LSB INL (max) integral linearity
  • 7nV/√Hz low noise
  • 1nVs code independent low glitch
  • –105dB at 1kHz fOUT excellent THD
  • 1µs fast settling
  • VREFPF to VREFNF flexible output ranges
  • Integrated, precision feedback resistors
  • 50MHz, 4-wire SPI-compatible interface
    • Readback
    • Daisy-chain
  • –40°C to +125˚C temperature range
  • 48-pin TQFP package

Applications

  • Lab and field instrumentation
  • Spectrometer
  • Analog output module
  • Battery Test
  • Semiconductor test
  • Arbitrary waveform generator (AWG)
  • MRI
  • X-ray systems
  • Professional audio amplifier (rack mount)

Functional Block Diagram

Block Diagram - Texas Instruments DACx1001 Digital-to-Analog Converters (DACs)
Published: 2020-02-04 | Updated: 2024-05-14