The DADS1278-C (8-channel) are 24-bit, delta-sigma (Δ-Σ) analog-to-digital converters (ADCs) capable of up to 144k samples per second (SPS), allowing for simultaneous sampling of 4 or 8 channels. The chips are housed in the same package and are scale-down compatible. These high-resolution ADCs offer large usable bandwidth for audio applications, but with significantly lower offset and drift than comparable industrial products. The DADS1278-C are suitable for high-precision industrial measurements requiring stringent DC and AC specifications.

A high-order steady-state chopper regulator achieves very low drift and in-band noise. An on-chip decimation filter suppresses out-of-band noise. The ADC provides up to 90% of the Nyquist rate of usable signal bandwidth with in-band ripple less than 0.005dB.

Four operating modes allow users to balance speed, resolution, and power consumption. All operations are directly controlled by the pins, eliminating the need for programming registers. The chips are suitable for the entire industrial temperature range (-40°C to +85°C). The chip uses a TQFP-64 package.

• Simultaneously Measure Four/Eight Channels.
• Up to 144kSPS Data Rate.
• AC Performance:

• DC Accuracy:

• Selectable Operating Modes:

• Linear Phase Digital Filter.
• SPI ™ or Frame-Sync Serial Interface.
• Low Sampling Aperture Error.
• Modulator Output Option (digital filter bypass).
• Analog Supply: 5V.
• Digital Core: 1.8V.
• I/O Supply: 1.8V to 3.3V.

• Vibration/Modal Analysis.
• Multi-Channel Data Acquisition.
• Acoustics/Dynamic Strain Gauges.
• Pressure Sensors.