24-bit, 4-kSPS, 12-ch delta-sigma ADC with PGA and voltage reference for sensor measurement
Product details
Parameters
Package | Pins | Size
Features
- 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
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Description
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.
Technical documentation
= Top documentation for this product selected by TI
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
ADS124S08EVM
Description
The ADS124S08EVM is a platform for evaluation of the ADS124S08 analog-to-digital converter (ADC). The ADS124S08 is a 24-bit, 4kSPS, 12 channel, low-power Delta-Sigma ADC for sensor measurement and process control applications. The ADS124S08 also includes a highly-accurate oscillator and excellent (...)
Features
- Includes all required support circuitry for the ADS124S08
- Delta-Sigma ADC EvaluaTIon software enables quick configuration and analysis
- Configurable inputs, references, supplies and clock sources
- Easily accessible signals via test points and headers
Software development
ADC-TEMP-SENSOR-FW — 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 (...)
Features
- Complete firmware for temperature-to-digital conversion
- Supports common temperature-sensor types:
- RTDs (PT100, PT1000, Ni120, etc.)
- Thermocouples (type K, J, B, T, etc.)
- Thermistors (PTC, NTC)
- Analog temperature sensors
- Easy to modify for multiple sensors
- Use with other precision ADCs with minimal design (...)
SBAC159.ZIP (4877 KB)
Design tools & simulation
SBAM301.ZIP (57 KB) - IBIS Model
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
- (...)
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 (...)
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 (...)
ADS124S08-EXCEL-CALC-TOOL — 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 (...)
Features
- PGA common-mode-range calculator
- Complete register map
- Analog-to-digital converter (ADC) code-conversion calculator
- Digital filter plot + settling time + normal-mode rejection
- CRC calculator
- Calibration calculations
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
- (...)
Reference designs
TIDA-01434 — This isolated, 3.65-mm thin reference design enables highly-integrated, bipolar input and high-performance solutions with a 24-bit delta-sigma analog-to-digital converter (ADC). Modern analog input modules need high performance in different aspects such as higher channel density at the same room (...)
Design files
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download TIDA-01434 BOM.pdf (58KB) -
download TIDA-01434 Assembly Drawing.pdf (1466KB) -
download TIDA-01434 PCB.pdf (4186KB) -
download TIDA-01434 Gerber.zip (568KB) -
download TIDA-01434 CAD Files (Rev. A).zip (2178KB)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| TQFP (PBS) | 32 | View options |
| VQFN (RHB) | 32 | View options |
Ordering & quality
Information included:
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
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