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ADS114S06

ACTIVE

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

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Data sheet

ADS114S06

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) -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) 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) -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
  • 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 (ADS114S08) or 6 (ADS114S06) 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
  • 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 (ADS114S08) or 6 (ADS114S06) 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 ADS114S06 and ADS114S08 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 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 ADS114S08 and six inputs for the ADS114S06 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 ADS114S06 and ADS114S08 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 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 ADS114S08 and six inputs for the ADS114S06 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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ADS114S06B ACTIVE 16-bit, 4-kSPS, 6-ch delta-sigma ADC With PGA and voltage reference for low-cost applications Smaller temperature range (-40 to 125 C)
Same functionality with different pin-out to the compared device
ADS114S08 ACTIVE 16-bit, 4-kSPS, 12-ch delta-sigma ADC with PGA and voltage reference for sensor measurement Higher channel count (12-Ch)

Technical documentation

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Type Title Date
* Data sheet ADS114S0x 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 13 Jun 2017
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 Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs PDF | HTML 23 Mar 2022
Application note A Basic Guide to Bridge Measurements 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 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 note QFN and SON PCB Attachment (Rev. B) PDF | HTML 24 Aug 2018
Application note 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

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

ADS114S08EVM — ADS114S08 evaluation module

The ADS114S08 evaluation module (EVM) is a platform for evaluation of the ADS114S08 analog-to-digital converter (ADC). The ADS114S08 is a 16-bit, 4-kSPS, 12-channel, low-power delta-sigma ADC for sensor measurement and process control applications. The ADS114S08 also includes a highly-accurate (...)

User guide: PDF
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Application software & framework

ADC-TEMP-SENSOR-FW — Temperature-sensor (RTD, thermocouple, thermistor) firmware for precision ADCs

This temperature-sensor linearization firmware provides a software routine for measuring and linearizing most common temperature sensors, including resistance temperature detectors (RTDs), thermocouples, thermistors (NTC, PTC, etc.) and analog temperature sensors.

This software includes an (...)

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Firmware

SBAC159 — ADS1x4S08 Firmware Example Code

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Supported products & hardware

Supported products & hardware

Products
Precision ADCs
ADS114S06 — 16-bit, 4-kSPS, 6-ch delta-sigma ADC with PGA and voltage reference for sensor measurement ADS114S06B — 16-bit, 4-kSPS, 6-ch delta-sigma ADC With PGA and voltage reference for low-cost applications ADS114S08 — 16-bit, 4-kSPS, 12-ch delta-sigma ADC with PGA and voltage reference for sensor measurement ADS114S08B — 16-bit, 4-kSPS, 12-ch delta-sigma ADC with PGA and voltage reference for low-cost applications ADS124S06 — 24-bit, 4-kSPS, 6-ch delta-sigma ADC with PGA and voltage reference for precision sensor measurement ADS124S08 — 24-bit, 4-kSPS, 12-ch delta-sigma ADC with PGA and voltage reference for sensor measurement
Hardware development
Evaluation board
ADS114S08EVM — ADS114S08 evaluation module ADS124S08EVM — ADS124S08 evaluation module
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Support software

SBAC301 — ADS124S08 Example C Code

Supported products & hardware

Supported products & hardware

Products
Precision ADCs
ADS114S06 — 16-bit, 4-kSPS, 6-ch delta-sigma ADC with PGA and voltage reference for sensor measurement ADS114S06B — 16-bit, 4-kSPS, 6-ch delta-sigma ADC With PGA and voltage reference for low-cost applications ADS114S08 — 16-bit, 4-kSPS, 12-ch delta-sigma ADC with PGA and voltage reference for sensor measurement ADS114S08B — 16-bit, 4-kSPS, 12-ch delta-sigma ADC with PGA and voltage reference for low-cost applications ADS124S06 — 24-bit, 4-kSPS, 6-ch delta-sigma ADC with PGA and voltage reference for precision sensor measurement ADS124S08 — 24-bit, 4-kSPS, 12-ch delta-sigma ADC with PGA and voltage reference for sensor measurement
Download
Calculation tool

ADC-RTD-CONFIG-CALC — RTD Configuration Calculator for Precision ADCs

This resistance temperature detector (RTD) configuration calculator is a Microsoft® Excel-based tool that helps the user identify a system solution for an RTD application. Two-, three- and four-wire RTD configurations are shown by default, with options for a high-side or low-side reference (...)

Supported products & hardware

Supported products & hardware

Products
Precision ADCs
ADS1120 — 16-bit, 2-kSPS, 4-ch, low-power, small-size delta-sigma ADC with PGA, VREF, 2x IDACs & SPI interface ADS112C04 — 16-bit, 2-kSPS, 4-ch, low-power, small-size delta-sigma ADC with PGA, VREF, 2x IDACs & I2C interface ADS112U04 — 16-bit, 2-kSPS, 4-ch, low-power, small-size delta-sigma ADC w/ PGA, VREF, 2x IDACs & UART interface ADS114S06 — 16-bit, 4-kSPS, 6-ch delta-sigma ADC with PGA and voltage reference for sensor measurement ADS114S06B — 16-bit, 4-kSPS, 6-ch delta-sigma ADC With PGA and voltage reference for low-cost applications ADS114S08 — 16-bit, 4-kSPS, 12-ch delta-sigma ADC with PGA and voltage reference for sensor measurement ADS114S08B — 16-bit, 4-kSPS, 12-ch delta-sigma ADC with PGA and voltage reference for low-cost applications ADS1220 — 24-bit, 2-kSPS, four-channel, low-power, delta-sigma ADC with PGA, VREF, SPI and two IDACs ADS122C04 — 24-bit, 2-kSPS, 4-ch, low-power, small-size delta-sigma ADC with PGA, VREF, 2x IDACs & I2C interface ADS122U04 — 24-bit, 2-kSPS, 4-ch, low-power, small-size delta-sigma ADC w/ PGA, VREF, 2x IDACs & UART interface ADS124S06 — 24-bit, 4-kSPS, 6-ch delta-sigma ADC with PGA and voltage reference for precision sensor measurement ADS124S08 — 24-bit, 4-kSPS, 12-ch delta-sigma ADC with PGA and voltage reference for sensor measurement ADS125H01 — 24-bit, 40-kSPS, 1-ch delta-sigma ADC with low-noise PGA and ±20-V input ADS125H02 — 24-bit, 40-kSPS, 2-ch delta-sigma ADC with ±20-V input, PGA, IDACs, GPIOs and VREF ADS1260 — 24-bit, 40-kSPS, 5-ch delta-sigma ADC with PGA, VREF and IDACs for factory automation ADS1261 — 24-bit, 40-kSPS, 10-ch delta-sigma ADC with PGA, VREF, IDACs & AC excitation for factory automation
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Calculation tool

ADS124S08-EXCEL-CALC-TOOL — ADS1x4S0x Design Calculator

The ADS124S08 Excel™ calculator tool provides the user with several easy-to-use tools to simplify the configuration of the ADS114S06, ADS114S08, ADS124S06, and ADS124S08. To ensure proper device functionality, the tool includes a common-mode-range calculator to easily determine if the (...)

Supported products & hardware

Supported products & hardware

Products
Precision ADCs
ADS114S06 — 16-bit, 4-kSPS, 6-ch delta-sigma ADC with PGA and voltage reference for sensor measurement ADS114S08 — 16-bit, 4-kSPS, 12-ch delta-sigma ADC with PGA and voltage reference for sensor measurement ADS124S06 — 24-bit, 4-kSPS, 6-ch delta-sigma ADC with PGA and voltage reference for precision sensor measurement ADS124S08 — 24-bit, 4-kSPS, 12-ch delta-sigma ADC with PGA and voltage reference for sensor measurement
Hardware development
Evaluation board
ADS124S08EVM — ADS124S08 evaluation module
Download
Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
User guide: PDF
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Package Pins Download
TQFP (PBS) 32 View options
VQFN (RHB) 32 View options
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