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Product details

Parameters

Resolution (Bits) 16 Number of input channels 6 Sample rate (Max) (kSPS) 4 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-Ended Multi-channel configuration Multiplexed Rating Catalog Reference mode Ext, Int Input range (Max) (V) 2.625, 5.25 Input 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 voltage AVDD (Min) (V) 2.7 Analog voltage AVDD (Max) (V) 5.25 INL (Max) (+/-LSB) 1 Digital supply (Min) (V) 2.7 Digital supply (Max) (V) 3.6 open-in-new Find other Precision ADCs (<=10MSPS)

Package | Pins | Size

TQFP (PBS) 32 49 mm² 7 x 7 VQFN (RHB) 32 25 mm² 5 x 5 open-in-new Find other Precision ADCs (<=10MSPS)

Features

  • 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

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Description

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

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet 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) Feb. 26, 2020
White papers Fundamentals of Precision ADC Noise Analysis Jun. 19, 2020
Application notes ADS124S08 3-Wire PT100 RTD Measurement Circuit w/ Low-Side Reference and 1 IDAC (Rev. A) Mar. 09, 2020
Application notes K-type thermocouple measurement circuit with precision ADC Mar. 19, 2019
Application notes A Basic Guide to Thermocouple Measurements Sep. 28, 2018
Application notes QFN and SON PCB Attachment (Rev. B) Aug. 24, 2018
Application notes A Basic Guide to RTD Measurements Jun. 19, 2018
Application notes Comparing the ADS114S06 and ADS114S08 Standard and Cost-Optimized (B-Grade) ADCs May 07, 2018
Application notes Low-Cost, Single-Chip, Diff Temp Measurement Solution Using Delta-Sigma ADCs (Rev. A) May 04, 2018
Application notes Digital Filter Types in Delta-Sigma ADCs Jun. 27, 2017
User guides ADS1x4S08 Evaluation Module User's Guide (Rev. A) May 31, 2017
Application notes How delta-sigma ADCs work, Part 1 (Rev. A) Sep. 19, 2016
Application notes RTD Ratiometric Measurements and Filtering Using the ADS1148 and ADS1248 Mar. 13, 2013
Application notes How delta-sigma ADCs work, Part 2 Nov. 09, 2011

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
Description

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 (...)

Features
  • Includes all required support circuitry for ADS114S08
  • Delta-Sigma ADC EvaluaTIon Software (DELTASIGMAEVAL-GUI) enables quick configuration and analysis
  • Configurable inputs, references, and supplies
  • Easily accessible signals via test points and headers

Software development

SUPPORT SOFTWARE Download
SBAC159.ZIP (4877 KB)

Design tools & simulation

SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SIMULATION TOOLS Download
SPICE-based analog simulation program
TINA-TI 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 (...)
document-generic User guide
CALCULATION TOOLS Download
Analog-to-digital converter (ADC) input driver design tool supporting multiple input types
ADC-INPUT-CALC ADC-INPUT-CALC is an online tool that provides support for designing the input buffer to an analog-to-digital converter (ADC). It offers 24 different op-amp based buffer circuits that can be used to drive an ADC input. The available topologies cover differential, single-ended and transformer-coupled (...)
CALCULATION TOOLS Download
Analog engineer's calculator
ANALOG-ENGINEER-CALC — 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 op-amp gain with feedback (...)
Features
  • Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
    • Noise calculations
    • Common unit translation
  • Solves common amplifier circuit design problems
    • Gain selections using standard resistors
    • Filter configurations
    • Total noise for common amplifier configurations
  • (...)

CAD/CAE symbols

Package Pins Download
TQFP (PBS) 32 View options
VQFN (RHB) 32 View options

Ordering & quality

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