24-bit 64-kSPS 8-ch simultaneous delta-sigma ADC with fast start-up for monitoring and protection


Product details


Resolution (Bits) 24 Number of input channels 8 Sample rate (Max) (kSPS) 64 Interface type SPI Architecture Delta-Sigma Input type Differential, Pseudo-Differential Multi-channel configuration Simultaneous Sampling Rating Catalog Reference mode Int Input range (Max) (V) 4 Input range (Min) (V) 0 Features Daisy-Chainable, GPIO, Oscillator, PGA Operating temperature range (C) -40 to 105 Power consumption (Typ) (mW) 2 Analog voltage AVDD (Min) (V) 2.7 SNR (dB) 108 Analog voltage AVDD (Max) (V) 5.25 Digital supply (Min) (V) 1.7 Digital supply (Max) (V) 3.6 open-in-new Find other Precision ADCs (<=10MSPS)

Package | Pins | Size

TQFP (PAG) 64 144 mm² 12 x 12 open-in-new Find other Precision ADCs (<=10MSPS)


  • Power-up time: 3 ms
  • Eight differential simultaneous sampling inputs
  • High performance:
    • Dynamic range at 1 kSPS: 118 dB
    • Crosstalk: –125 dB
    • THD: –100 dB at 50 Hz and 60 Hz
  • Low power consumption: 2 mW/channel
  • Data rates: 1, 2, 4, 8, 16, 32, and 64 kSPS
  • Gain options: 1, 2, 4, 8, and 12
  • Internal voltage reference: 8 ppm/°C Drift
  • Supply range:
    • Analog:
      • 2.7 V to 5.25 V (unipolar)
      • ±2.5 V (bipolar)
    • Digital: 1.7 V to 3.6 V
  • Fault detection and device self-testing capability
  • SPI™-compatible data interface and four GPIOs
  • Package: 64-pin TQFP
  • Operating temperature range: –40°C to +105°C

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open-in-new Find other Precision ADCs (<=10MSPS)


The ADS131E08S is a multichannel, simultaneous sampling, 24-bit, delta-sigma (ΔΣ), analog-to-digital converter (ADC) with built-in programmable gain amplifiers (PGAs), an internal reference, and an internal oscillator. The ADC wide dynamic range, scalable data rates, and internal fault detect monitors make the ADS131E08S very attractive in industrial power monitoring, control, and protection applications. Fast power-up time allows data to be available within 3 ms of power being applied to the device for line-powered power applications. True high-impedance inputs enable the ADS131E08S to directly interface with a resistor-divider network or a voltage transformer to measure line voltage, or a current transformer or Rogowski coil to measure line current. With high integration levels and exceptional performance, the ADS131E08S enables the creation of scalable industrial power systems at a significantly reduced size, power, and overall cost.

The ADS131E08S has an individual input multiplexer per channel that can be independently connected to the internally-generated signals for test, temperature, and fault detection. Fault detection can be implemented internal to the device, using the integrated comparators with digital-to-analog converter (DAC)-controlled trigger levels. The ADS131E08S can operate at data rates as high as 64 kSPS.

The complete analog front-end (AFE) solution is available in a 64-pin TQFP package and is specified over the industrial temperature range of –40°C to +105°C.

open-in-new Find other Precision ADCs (<=10MSPS)

Technical documentation

= Featured
No results found. Please clear your search and try again. View all 4
Type Title Date
* Datasheet ADS131E08S Eight-Channel, 24-Bit, Analog Front-End With Fast Power-Up Time datasheet (Rev. B) Apr. 06, 2020
Technical articles What’s the big deal about circuit breakers? Aug. 01, 2017
Application notes Digital Filter Types in Delta-Sigma ADCs Jun. 27, 2017
Technical articles Tripping Point: Simplifying circuit breaker design using delta-sigma ADCs Aug. 10, 2016

Design & development

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

Hardware development

document-generic User guide

The ADS131E08EVM-PDK is a demonstration kit for the ADS131E08, a simultaneous sampling, 24-bit, delta-sigma (Δ Σ) analog-to-digital converter (ADC) with a built-in programmable gain amplifier (PGA), internal reference, and an onboard oscillator. The ADS131E08 contains the features (...)

  • Easy-to-use evaluation software for Microsoft™ Windows XP or Windows 7
  • Built-in analysis tools including oscilloscope, FFT, and histogram displays
  • Flexible input configurations
  • Optional external reference circuits
  • Ability to export data in simple test files for post processing

Design tools & simulation

SBAM160.ZIP (141 KB) - IBIS Model
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
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 (...)
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 (...)
  • 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

High Accuracy ±0.5% Current and Isolated Voltage Measurement Ref Design Using 24-Bit Delta-Sigma ADC
TIDA-00835 The TIDA-00835 reference design allows for accurate voltage and current measurement using a bipolar input configuration by incorporating a four- channel, 24-bit simultaneously-sampling differential input Delta-Sigma ADC over wide dynamic range. The ADC is configured to measure ±2.5 V bipolar (...)
document-generic Schematic document-generic User guide
High Resolution, Fast Startup Analog Front End for Air Circuit Breaker Reference Design
TIDA-00661 The TIDA-00661 reference design features signal processing front-end subsystem for electronic trip units (ETU) used in air circuit breakers (ACB) or molded case circuit breakers (MCCB). This subsystem consists of Delta-Sigma ADC with 24-Bit resolution and fast startup (< 3ms), ±2.5V (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
TQFP (PAG) 64 View options

Ordering & quality

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