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ADS114S06B

ACTIVE

16-bit, 4-kSPS, 6-ch delta-sigma ADC With PGA and voltage reference for low-cost applications

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Data sheet

ADS114S06B

ACTIVE
Data sheet Order now

Product details

Resolution (Bits) 16 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) -40 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) 16 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) -40 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
  • 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 (ADS114S08B) or 6 (ADS114S06B) independently selectable inputs
  • Dual-matched programmable current sources for sensor excitation: 10 µA to 2000 µA
  • Internal reference: 2.5 V, 8 ppm/°C (typ) drift
  • Internal oscillator: 4.096 MHz, 2% accuracy
  • Internal temperature sensor
  • Self offset and system calibration
  • Four general-purpose i/os
  • SPI-compatible interface
  • 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: –40°C to +125°C
  • Pin-compatible with the ADS114S0x
  • Low power consumption: as low as 280 µA
  • 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 (ADS114S08B) or 6 (ADS114S06B) independently selectable inputs
  • Dual-matched programmable current sources for sensor excitation: 10 µA to 2000 µA
  • Internal reference: 2.5 V, 8 ppm/°C (typ) drift
  • Internal oscillator: 4.096 MHz, 2% accuracy
  • Internal temperature sensor
  • Self offset and system calibration
  • Four general-purpose i/os
  • SPI-compatible interface
  • 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: –40°C to +125°C
  • Pin-compatible with the ADS114S0x

The ADS114S06B and ADS114S08B are precision, 16-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 a digital filter that offers 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 ADS114S08B and six inputs for the ADS114S06B 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 (GPIOs).

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

The ADS114S06B and ADS114S08B are precision, 16-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 a digital filter that offers 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 ADS114S08B and six inputs for the ADS114S06B 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 (GPIOs).

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 ADS114S0xB Low-Power, Low-Noise, Highly Integrated, 6- and 12-Channel, 4-kSPS, 16-Bit, Delta-Sigma ADC With PGA and Voltage Reference datasheet (Rev. A) PDF | HTML 26 Feb 2020
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
Application note Comparing ADS114S06 and ADS114S08 to the Lower-Cost ADS114S06B and ADS114S08B (Rev. B) PDF | HTML 15 Dec 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 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
EVM User's guide ADS1x4S08 Evaluation Module User's Guide (Rev. A) 31 May 2017
Analog Design Journal How delta-sigma ADCs work, Part 1 (Rev. A) 19 Sep 2016
Analog Design Journal How delta-sigma ADCs work, Part 2 09 Nov 2011

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