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ADS124S06

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24-bit, 4-kSPS, 6-ch delta-sigma ADC with PGA and voltage reference for precision sensor measurement

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Data sheet

ADS124S06

ACTIVE
Data sheet Order now

Product details

Resolution (Bits) 24 Sample rate (max) (ksps) 4 Number of input channels 6 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 2.625, 5.25 Input voltage range (min) (V) -2.625, 0 Features 50/60 Hz Rejection, Excitation Current Sources (iDACs), GPIO, Oscillator, PGA, Temp Sensor Operating temperature range (°C) -50 to 125 Power consumption (typ) (mW) 1.75 Analog supply (min) (V) 2.7 Analog supply voltage (max) (V) 5.25 Digital supply (min) (V) 2.7 Digital supply (max) (V) 3.6
Resolution (Bits) 24 Sample rate (max) (ksps) 4 Number of input channels 6 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 2.625, 5.25 Input voltage range (min) (V) -2.625, 0 Features 50/60 Hz Rejection, Excitation Current Sources (iDACs), GPIO, Oscillator, PGA, Temp Sensor Operating temperature range (°C) -50 to 125 Power consumption (typ) (mW) 1.75 Analog supply (min) (V) 2.7 Analog supply voltage (max) (V) 5.25 Digital supply (min) (V) 2.7 Digital supply (max) (V) 3.6
TQFP (PBS) 32 49 mm² 7 x 7 VQFN (RHB) 32 25 mm² 5 x 5
  • Low Power Consumption: As Low as 280 µA
  • Low-Noise PGA: 19 nVRMS at Gain = 128
  • Programmable Gain: 1 to 128
  • Programmable Data Rates: 2.5 SPS to 4 kSPS
  • Simultaneous 50-Hz and 60-Hz Rejection at
    ≤ 20 SPS with Low-Latency Digital Filter
  • Analog Multiplexer with 12 (ADS124S08) or 6 (ADS124S06) Independently Selectable Inputs
  • Dual-Matched Programmable Current Sources for Sensor Excitation: 10 µA to 2000 µA
  • Internal Reference: 2.5 V, 10 ppm/°C (max) Drift
  • Internal Oscillator: 4.096 MHz, 1.5% Accuracy
  • Internal Temperature Sensor
  • Extended Fault Detection Circuits
  • Self Offset and System Calibration
  • Four General-Purpose I/Os
  • SPI-Compatible Interface with Optional CRC
  • Analog Supply: Unipolar (2.7 V to 5.25 V) or Bipolar (±2.5 V)
  • Digital Supply: 2.7 V to 3.6 V
  • Operating Temperature: –50°C to +125°C
  • Low Power Consumption: As Low as 280 µA
  • Low-Noise PGA: 19 nVRMS at Gain = 128
  • Programmable Gain: 1 to 128
  • Programmable Data Rates: 2.5 SPS to 4 kSPS
  • Simultaneous 50-Hz and 60-Hz Rejection at
    ≤ 20 SPS with Low-Latency Digital Filter
  • Analog Multiplexer with 12 (ADS124S08) or 6 (ADS124S06) Independently Selectable Inputs
  • Dual-Matched Programmable Current Sources for Sensor Excitation: 10 µA to 2000 µA
  • Internal Reference: 2.5 V, 10 ppm/°C (max) Drift
  • Internal Oscillator: 4.096 MHz, 1.5% Accuracy
  • Internal Temperature Sensor
  • Extended Fault Detection Circuits
  • Self Offset and System Calibration
  • Four General-Purpose I/Os
  • SPI-Compatible Interface with Optional CRC
  • Analog Supply: Unipolar (2.7 V to 5.25 V) or Bipolar (±2.5 V)
  • Digital Supply: 2.7 V to 3.6 V
  • Operating Temperature: –50°C to +125°C

The ADS124S06 and ADS124S08 are precision, 24-bit, delta-sigma (ΔΣ), analog-to-digital converters (ADCs) that offer low power consumption and many integrated features to reduce system cost and component count in applications measuring small-signal sensors.

These ADCs feature configurable digital filters that offer low-latency conversion results and 50-Hz or
60-Hz rejection for noisy industrial environments. A low-noise, programmable gain amplifier (PGA) provides gains ranging from 1 to 128 to amplify low-level signals for resistive bridge or thermocouple applications. Additionally, these devices integrate a low-drift, 2.5-V reference that reduces printed circuit board (PCB) area. Finally, two programmable excitation current sources (IDACs) allow for easy and accurate RTD biasing.

An input multiplexer supports 12 inputs for the ADS124S08 and six inputs for the ADS124S06 that can be connected to the ADC in any combination for design flexibility. In addition, these devices include features such as sensor burn-out detection, voltage bias for thermocouples, system monitoring, and four general-purpose I/Os.

The devices are offered in a leadless VQFN-32 or a TQFP-32 package.

The ADS124S06 and ADS124S08 are precision, 24-bit, delta-sigma (ΔΣ), analog-to-digital converters (ADCs) that offer low power consumption and many integrated features to reduce system cost and component count in applications measuring small-signal sensors.

These ADCs feature configurable digital filters that offer low-latency conversion results and 50-Hz or
60-Hz rejection for noisy industrial environments. A low-noise, programmable gain amplifier (PGA) provides gains ranging from 1 to 128 to amplify low-level signals for resistive bridge or thermocouple applications. Additionally, these devices integrate a low-drift, 2.5-V reference that reduces printed circuit board (PCB) area. Finally, two programmable excitation current sources (IDACs) allow for easy and accurate RTD biasing.

An input multiplexer supports 12 inputs for the ADS124S08 and six inputs for the ADS124S06 that can be connected to the ADC in any combination for design flexibility. In addition, these devices include features such as sensor burn-out detection, voltage bias for thermocouples, system monitoring, and four general-purpose I/Os.

The devices are offered in a leadless VQFN-32 or a TQFP-32 package.
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Technical documentation

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Type Title Date
* Data sheet ADS124S0x Low-Power, Low-Noise, Highly Integrated, 6- and 12-Channel, 4-kSPS, 24-Bit, Delta-Sigma ADC with PGA and Voltage Reference datasheet (Rev. C) PDF | HTML 05 Jun 2017
Application note Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs (Rev. A) PDF | HTML 18 Mar 2024
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML 06 Dec 2023
Application note A Basic Guide to RTD Measurements (Rev. A) PDF | HTML 29 Mar 2023
Application note A Basic Guide to Thermocouple Measurements (Rev. A) PDF | HTML 29 Mar 2023
Application note Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 29 Mar 2023
Application note RTD Ratiometric Measurements and Filtering Using the ADS1148 and ADS1248 (Rev. A) PDF | HTML 27 Mar 2023
Circuit design Circuit for Protecting ADS124S08 ADC From EOS for RTD Measurement PDF | HTML 24 May 2022
Application note A Basic Guide to Bridge Measurements (Rev. A) PDF | HTML 18 Feb 2022
Application note ADS124S08 3-Wire PT100 RTD Measurement Circuit w/ Low-Side Reference and 1 IDAC (Rev. B) 09 Sep 2021
Application note Communication Methods for Data Integrity Using Delta-Sigma Data Converters (Rev. A) PDF | HTML 23 Aug 2021
Application brief How to Implement Isolated I2C-Based Cold-Junction Measurements Using GPIOs PDF | HTML 24 May 2021
Application note RTD Wire-Break Detection Using Precision Delta-Sigma ADCs PDF | HTML 18 Feb 2021
E-book Fundamentals of Precision ADC Noise Analysis 19 Jun 2020
Circuit design K-type thermocouple measurement circuit with precision ADC 19 Mar 2019
Application brief Low-Cost, Single-Chip, Diff Temp Measurement Solution Using Delta-Sigma ADCs (Rev. A) 04 May 2018
Technical article Let the loop current flow, but only 4-20mA PDF | HTML 24 Jul 2017
EVM User's guide ADS1x4S08 Evaluation Module User's Guide (Rev. A) 31 May 2017

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