Overview
The DAC11001APFBT from Texas Instruments is a highly accurate, low-noise, voltage-output, single-channel digital-to-analog converter (DAC). This 20-bit monotonic DAC is designed for applications requiring ultra-low noise, low glitch, and exceptional total harmonic distortion (THD). It features a fast settling time of 1 µs and an unbuffered voltage output with low noise performance of 7 nV/√Hz. The device is part of the DACx1001 family, which includes the 18-bit DAC91001 and the 16-bit DAC81001, all of which are specified monotonic by design and offer excellent linearity across all ranges.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 20 bits | |
| Differential Non-Linearity (DNL) | 1 LSB (max) | |
| Integral Non-Linearity (INL) | 4 LSB (max) | |
| Noise | 7 nV/√Hz | |
| Glitch | 1 nV-s (code independent) | |
| Total Harmonic Distortion (THD) | –105 dB at 1 kHz fOUT | |
| Settling Time | 1 µs | |
| Output Range | VREFPF to VREFNF | |
| Interface | 50 MHz, 4-wire SPI-compatible | |
| Temperature Range | –40°C to +125°C | |
| Package | 48-pin TQFP |
Key Features
- 20-bit monotonic DAC with 1-LSB DNL (max) and 4-LSB INL (max)
- Ultra-low noise performance of 7 nV/√Hz
- Code-independent low glitch of 1 nV-s
- Excellent THD of –105 dB at 1 kHz fOUT
- Fast settling time of 1 µs
- Flexible output ranges from VREFPF to VREFNF, including asymmetric output ranges
- Integrated precision feedback resistors
- 50 MHz, 4-wire SPI-compatible interface with readback and daisy-chain capabilities
- Power-on-reset circuit ensuring known values in registers at power-up
Applications
- Lab and field instrumentation
- Spectrometer
- Analog output module
- Battery test
- Semiconductor test
- Arbitrary waveform generator (AWG)
- MRI and X-ray systems
- Professional audio amplifiers (rack mount)
Q & A
- What is the resolution of the DAC11001APFBT?
The DAC11001APFBT has a resolution of 20 bits.
- What is the noise performance of the DAC11001APFBT?
The noise performance is 7 nV/√Hz.
- What is the settling time of the DAC11001APFBT?
The settling time is 1 µs.
- What is the temperature range of the DAC11001APFBT?
The temperature range is –40°C to +125°C.
- What type of interface does the DAC11001APFBT use?
The DAC11001APFBT uses a 50 MHz, 4-wire SPI-compatible interface.
- Does the DAC11001APFBT have integrated precision feedback resistors?
- What are the typical applications of the DAC11001APFBT?
Typical applications include lab and field instrumentation, spectrometers, analog output modules, battery testing, semiconductor testing, arbitrary waveform generators, MRI and X-ray systems, and professional audio amplifiers.
- What is the package type of the DAC11001APFBT?
The package type is a 48-pin TQFP.
- Does the DAC11001APFBT have a power-on-reset circuit?
- What is the THD of the DAC11001APFBT at 1 kHz fOUT?
The THD is –105 dB at 1 kHz fOUT.
