The DADS1246 is a precision 24-bit analog-to-digital converter (ADC) that includes many integrated features to reduce system cost and component count for sensor measurement applications. This chip features a low-noise programmable gain amplifier (PGA), a single-cycle digital filter, a high-precision Delta-Sigma (ΔΣ) A/D converter, and an internal oscillator.

The DADS1246's input analog multiplexer supports one differential input. Furthermore, this multiplexer integrates sensor failure detection. The programmable gain amplifier (PGA) provides selectable gain up to 128x. 

These features provide a complete front-end solution for temperature sensor measurement applications. Digital filters enable single-cycle setup to support fast channel cycling when using the input multiplexer and provide data rates up to 2 kSPS. For data rates of 20 SPS or lower, the filters suppress harmonics from 50 Hz and 60 Hz power frequency interference.

• Programmable data rate: up to 2kSPS.
• Single-cycle setup for all data rates.
• Harmonic suppression at 20SPS.
• Analog multiplexer with 2 independently selectable inputs.
• Low-noise programmable gain amplifier: 48nVRMS when PGA=128.
• Integrated low-drift 2.048V reference voltage: 10ppm/ ° C.
• Sensor failure detection.
• 1 general purpose input/output interfaces.
• Built-in temperature sensor.
• Self-calibration and system calibration.
• SPI interface compatible.
• Analog power supply: unipolar (2.7V) to 5.25V) and bipolar (±2.5V) operating voltage.
• Digital power supply: 2.7V to 5.25V.

• Temperature sensor measurement:
•          Resistance temperature detectors (RTDs), thermocouples and thermistors.
• Pressure measurement.
• Flow meter.
• Factory automation and process control.