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ADS124S18

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18-channel 24-bit 128kSPS delta-sigma ADC with PGA, VREF, two IDACs and SPI

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Data sheet

ADS124S18

ACTIVE
Data sheet Order now

Product details

Resolution (Bits) 24 Sample rate (max) (ksps) 128 Number of input channels 18 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Input voltage range (max) (V) 3.6 Input voltage range (min) (V) 0 Features Excitation Current Sources (iDACs), Integrated Temp Sensor , GPIO, Integrated oscillator, PGA Operating temperature range (°C) -50 to 125 Power consumption (typ) (mW) 0.103 Analog supply voltage (min) (V) 1.74 Analog supply voltage (max) (V) 3.6 Digital supply (min) (V) 1.65 Digital supply (max) (V) 3.6
Resolution (Bits) 24 Sample rate (max) (ksps) 128 Number of input channels 18 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Input voltage range (max) (V) 3.6 Input voltage range (min) (V) 0 Features Excitation Current Sources (iDACs), Integrated Temp Sensor , GPIO, Integrated oscillator, PGA Operating temperature range (°C) -50 to 125 Power consumption (typ) (mW) 0.103 Analog supply voltage (min) (V) 1.74 Analog supply voltage (max) (V) 3.6 Digital supply (min) (V) 1.65 Digital supply (max) (V) 3.6
TQFP (PBS) 32 49 mm² (7 mm × 7 mm)
  • Low power consumption (as low as 64µA)
  • Wide supply voltage range:
    • Analog: 1.74V to 3.6V
    • Digital: 1.65V to 5.25V
  • Programmable gain: 0.5 to 256
  • Programmable data rate (up to 128kSPS) and speed mode to trade power consumption and noise performance
  • Simultaneous 50Hz and 60Hz rejection at 20 or 25SPS with single-cycle settling digital filter
  • Analog multiplexer with 8 (ADS1x4S14) or 18 (ADS1x4S18) independently selectable inputs
  • Dual-matched programmable current sources
  • Internal programmable voltage reference:1.25V or 2.5V with 35ppm/°C (max) drift
  • Internal 1% (max) accurate oscillator
  • Internal temperature sensor
  • Eight general-purpose I/Os (configurable as either push-pull or open-drain outputs)
  • Sequencer with 24 individually programmable configurations and digital comparators
  • SPI-compatible interface with optional CRC and daisy-chain capability
  • Low power consumption (as low as 64µA)
  • Wide supply voltage range:
    • Analog: 1.74V to 3.6V
    • Digital: 1.65V to 5.25V
  • Programmable gain: 0.5 to 256
  • Programmable data rate (up to 128kSPS) and speed mode to trade power consumption and noise performance
  • Simultaneous 50Hz and 60Hz rejection at 20 or 25SPS with single-cycle settling digital filter
  • Analog multiplexer with 8 (ADS1x4S14) or 18 (ADS1x4S18) independently selectable inputs
  • Dual-matched programmable current sources
  • Internal programmable voltage reference:1.25V or 2.5V with 35ppm/°C (max) drift
  • Internal 1% (max) accurate oscillator
  • Internal temperature sensor
  • Eight general-purpose I/Os (configurable as either push-pull or open-drain outputs)
  • Sequencer with 24 individually programmable configurations and digital comparators
  • SPI-compatible interface with optional CRC and daisy-chain capability

The ADS1x4S1x are precision, low-power, 16- and 24-bit, analog-to-digital converters (ADCs) that offer many integrated features to reduce system cost and component count in the most common sensor measurement applications. The devices feature up to 18 analog inputs through a flexible input multiplexer (MUX), a low-noise, programmable gain amplifier (PGA), a programmable low-drift voltage reference, two programmable excitation current sources, an oscillator, and a temperature sensor.

Four speed modes, with programmable output data rates from 3.9SPS up to 128kSPS, allow to optimize power consumption and noise performance for each application.

The ADS1x4S1x are precision, low-power, 16- and 24-bit, analog-to-digital converters (ADCs) that offer many integrated features to reduce system cost and component count in the most common sensor measurement applications. The devices feature up to 18 analog inputs through a flexible input multiplexer (MUX), a low-noise, programmable gain amplifier (PGA), a programmable low-drift voltage reference, two programmable excitation current sources, an oscillator, and a temperature sensor.

Four speed modes, with programmable output data rates from 3.9SPS up to 128kSPS, allow to optimize power consumption and noise performance for each application.
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* Data sheet ADS1x4S1x 16- and 24-Bit, 8- and 18-Channel, 128kSPS, Delta-Sigma ADC With PGA, Voltage Reference, Sequencer, Digital Comparator and SPI datasheet PDF | HTML Aug 6, 2026
EVM User's guide ADS124S18EVM-PDK Evaluation Module User's Guide PDF | HTML Jun 2, 2026
Application note Designing Temperature Monitoring Systems with NTC and RTD PDF | HTML May 15, 2024
Application note RTD Wire-Break Detection Using Precision Delta-Sigma ADCs PDF | HTML Feb 18, 2021

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