ADS114S08BIPBSR

The ADS114S06B and ADS114S08B are high-precision 16-bit Δ-Σ ADCs that combine low power consumption with multiple integrated features, reducing system cost and component count in compact sensor signal measurement applications. These ADCs include a digital filter that provides low-latency conversion results and 50Hz or 60Hz noise rejection in noisy industrial environments. The PGA offers low noise and selectable gains from 1 to 128, enabling amplification of low-level signals in resistor bridge or thermocouple applications. Both devices also integrate a low-drift 2.5V voltage reference, reducing PCB area. Two programmable IDACs are included for accurate RTD biasing. The input multiplexer supports 12 inputs for the ADS114S08B and 6 inputs for the ADS114S06B. These inputs can be connected to the ADC in any combination, enhancing design flexibility. Both devices also feature sensor burn-out detection, thermocouple voltage biasing, system monitoring, and four GPIO. These devices are available in leadless VQFN-32 or TQFP-32 packages.

Applications

• Field transmitters: temperature, pressure, strain, flow
• PLC and DCS analog input modules
• Temperature controllers
• Environmental chambers, industrial ovens

Key features

• Low power consumption: as low as 280μA
• Programmable gain: 1 to 128
• Programmable data rate: 2.5SPS to 4kSPS
• Simultaneous 50Hz and 60Hz rejection at ≤20SPS via low-latency digital filter
• Analog multiplexer with 12 (ADS114S08B) or 6 (ADS114S06B) independently selectable inputs
• Dual matched programmable sensor excitation current sources: 10μA to 2000μA
• Internal reference: 2.5V, 8ppm/°C (typical) temperature drift
• Internal oscillator: 4.096MHz, 2% accuracy
• Internal temperature sensor
• Self offset calibration and system calibration
• Four general-purpose I/Os
• SPI-compatible interface
• Analog supply: unipolar (2.7V to 5.25V) or bipolar (±2.5V)
• Digital supply: 2.7V to 3.6V
• Operating temperature: -40°C to +125°C
• Pin-compatible with ADS114S0x