Texas Instruments DAC81001

Description

The 20-bit DAC11001A, 18-bit DAC91001, and 16-bit DAC81001 (DACx1001) 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 4 LSB (max) across all ranges.The unbuffered voltage output offers low noise performance (7 nV/√Hz) in combination with a fast settling time (1µs), making this device an excellent choice for low-noise, fast control-loop, and waveform generation applications. The DACx1001 integrates an enhanced deglitch circuit with code-independent ultra-low glitch (1 nV-s) to enable clean waveform ramps with ultra-low total harmonic distortion (THD).The DACx1001 devices incorporate 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 can be achieved, including asymmetric output ranges.The DACx1001 use a versatile 4–wire serial interface that operates at clock rates of up to 50 MHz. The DACx1001 is specified over the industrial temperature range of –40°C to +125°C.

Features

• 20-bit monotonic: 1-LSB DNL (max)
• Integral linearity: 4-LSB INL (max)
• Low noise: 7nV/√Hz
• Code independent low glitch: 1 nV-s
• Excellent THD: –105 dB at 1-kHz fOUT
• Fast settling: 1 µs
• Flexible output ranges: VREFPF to VREFNF
• Integrated, precision feedback resistors
• 50-MHz, 4-wire SPI-compatible interface
• Readback
• Daisy-chain
• Temperature range: –40°C to +125˚C
• Package: 48-pin TQFP

More information

• Datasheet
• IC product information