Product details

Resolution (Bits) 16 Number of input channels 16 Sample rate (Max) (kSPS) 125 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-Ended Multi-channel configuration Multiplexed Rating Catalog Reference mode Ext Input range (Max) (V) 2.85, 5.35 Input range (Min) (V) -2.7, 0 Features GPIO, Oscillator Operating temperature range (C) -40 to 105 Power consumption (Typ) (mW) 42 Analog voltage AVDD (Min) (V) 4.75 Analog voltage AVDD (Max) (V) 5.25 INL (Max) (+/-LSB) 1 Digital supply (Min) (V) 2.5 Digital supply (Max) (V) 3.6
Resolution (Bits) 16 Number of input channels 16 Sample rate (Max) (kSPS) 125 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-Ended Multi-channel configuration Multiplexed Rating Catalog Reference mode Ext Input range (Max) (V) 2.85, 5.35 Input range (Min) (V) -2.7, 0 Features GPIO, Oscillator Operating temperature range (C) -40 to 105 Power consumption (Typ) (mW) 42 Analog voltage AVDD (Min) (V) 4.75 Analog voltage AVDD (Max) (V) 5.25 INL (Max) (+/-LSB) 1 Digital supply (Min) (V) 2.5 Digital supply (Max) (V) 3.6
VQFNP (RTC) 48 49 mm² 7 x 7
  • 16 Bits, No Missing Codes
  • Fixed-Channel or Automatic Channel Scan
  • Fixed-Channel Data Rate: 125kSPS
  • Auto-Scan Data Rate: 23.7kSPS/Channel
  • Single-Conversion Settled Data
  • 16 Single-Ended or 8 Differential Inputs
  • Unipolar (+5V) or Bipolar (±2.5V) Operation
  • 0.3LSB (INL)
  • DC Stability:
    1µV/°C Offset Drift, 2ppm/°C Gain Drift
  • Open-Sensor Detection
  • Conversion Control Pin
  • Multiplexer Output for External Signal Conditioning
  • On-Chip Temperature, Reference, Offset, Gain, and Supply Voltage Readback
  • 42mW Power Dissipation
  • Standby, Sleep, and Power-Down Modes
  • Eight General-Purpose Inputs/Outputs (GPIO)
  • 32.768kHz Crystal Oscillator or External Clock
  • APPLICATIONS
    • Medical, Avionics, and Process Control
    • Machine and System Monitoring
    • Fast Scan Multi-Channel Instrumentation
    • Industrial Systems
    • Test and Measurement Systems

    SPI is a trademark of Motorola, Inc.
    All other trademarks are the property of their respective owners.

    • 16 Bits, No Missing Codes
    • Fixed-Channel or Automatic Channel Scan
    • Fixed-Channel Data Rate: 125kSPS
    • Auto-Scan Data Rate: 23.7kSPS/Channel
    • Single-Conversion Settled Data
    • 16 Single-Ended or 8 Differential Inputs
    • Unipolar (+5V) or Bipolar (±2.5V) Operation
    • 0.3LSB (INL)
    • DC Stability:
      1µV/°C Offset Drift, 2ppm/°C Gain Drift
    • Open-Sensor Detection
    • Conversion Control Pin
    • Multiplexer Output for External Signal Conditioning
    • On-Chip Temperature, Reference, Offset, Gain, and Supply Voltage Readback
    • 42mW Power Dissipation
    • Standby, Sleep, and Power-Down Modes
    • Eight General-Purpose Inputs/Outputs (GPIO)
    • 32.768kHz Crystal Oscillator or External Clock
  • APPLICATIONS
    • Medical, Avionics, and Process Control
    • Machine and System Monitoring
    • Fast Scan Multi-Channel Instrumentation
    • Industrial Systems
    • Test and Measurement Systems

    SPI is a trademark of Motorola, Inc.
    All other trademarks are the property of their respective owners.

    The ADS1158 is a 16-channel (multiplexed), low-noise, 16-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) that provides single-cycle settled data at channel scan rates from 1.8k to 23.7k samples per second (SPS) per channel. A flexible input multiplexer accepts combinations of eight differential or 16 single-ended inputs with a full-scale differential range of 5V or true bipolar range of ±2.5V when operating with a 5V reference. The fourth-order delta-sigma modulator is followed by a fifth-order sinc digital filter optimized for low-noise performance.

    The differential output of the multiplexer is accessible to allow signal conditioning before the input of the ADC. Internal system monitor registers provide supply voltage, temperature, reference voltage, gain, and offset data.

    An onboard PLL generates the system clock from a 32.768kHz crystal, or can be overridden by an external clock source. A buffered system clock output (15.7MHz) is provided to drive a microcontroller or additional converters.

    Serial digital communication is handled via an SPI™-compatible interface. A simple command word structure controls channel configuration, data rates, digital I/O, monitor functions, etc.

    Programmable sensor bias current sources can be used to bias sensors or verify sensor integrity.

    The ADS1158 operates from a unipolar +5V or bipolar ±2.5V analog supply and a digital supply compatible with interfaces ranging from 2.7V to 5.25V. The ADS1158 is available in a QFN-48 package.

    The ADS1158 is a 16-channel (multiplexed), low-noise, 16-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) that provides single-cycle settled data at channel scan rates from 1.8k to 23.7k samples per second (SPS) per channel. A flexible input multiplexer accepts combinations of eight differential or 16 single-ended inputs with a full-scale differential range of 5V or true bipolar range of ±2.5V when operating with a 5V reference. The fourth-order delta-sigma modulator is followed by a fifth-order sinc digital filter optimized for low-noise performance.

    The differential output of the multiplexer is accessible to allow signal conditioning before the input of the ADC. Internal system monitor registers provide supply voltage, temperature, reference voltage, gain, and offset data.

    An onboard PLL generates the system clock from a 32.768kHz crystal, or can be overridden by an external clock source. A buffered system clock output (15.7MHz) is provided to drive a microcontroller or additional converters.

    Serial digital communication is handled via an SPI™-compatible interface. A simple command word structure controls channel configuration, data rates, digital I/O, monitor functions, etc.

    Programmable sensor bias current sources can be used to bias sensors or verify sensor integrity.

    The ADS1158 operates from a unipolar +5V or bipolar ±2.5V analog supply and a digital supply compatible with interfaces ranging from 2.7V to 5.25V. The ADS1158 is available in a QFN-48 package.

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    Technical documentation

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    View all 11
    Type Title Date
    * Data sheet 16-Channel, 16-Bit Analog-to-Digital Converter datasheet (Rev. D) 17 Mar 2011
    Application note Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs 23 Mar 2022
    Application note A Basic Guide to Bridge Measurements 18 Feb 2022
    E-book Fundamentals of Precision ADC Noise Analysis 19 Jun 2020
    Application note QFN and SON PCB Attachment (Rev. B) 24 Aug 2018
    Application note Digital Filter Types in Delta-Sigma ADCs 27 Jun 2017
    Analog Design Journal How delta-sigma ADCs work, Part 1 (Rev. A) 19 Sep 2016
    EVM User's guide ADS1158EVM, ADS1258EVM User's Guide (Rev. D) 14 May 2016
    E-book Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs 19 Mar 2015
    Application note ADS1258, ADS1258-EP, and ADS1158 SPI™ Timeout Function 20 Apr 2012
    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

    ADCPRO — Analog-to-digital converter pro (ADCPro™) evaluation software

    ADCPro™ is a modular software system for evaluating analog-to-digital converters (ADCs) without the need for expensive logic analyzers and complex analysis routines. Used alone it is suitable for performing analysis on data sets captured from ADC testing; when paired with a Texas Instruments (...)

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    Evaluation board

    ADS1158EVM-PDK — ADS1158 Performance Demonstration Kit

    For use with a personal computer, the ADS1158EVM-PDK is available. This kit combines the ADS1158EVM board with the DSP-based MMB0 motherboard, and includes ADCPro™ software for evaluation. The MMB0 mother board allows the ADS1158EVM to be connected to the computer via an available USB port. (...)

    Simulation model

    ADS1158 IBIS Model

    SBAM124.ZIP (77 KB) - IBIS Model
    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 (...)
    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 (...)
    Calculation tool

    ADC-INPUT-CALC — Analog-to-digital converter (ADC) input driver design tool supporting multiple input types

    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 (...)
    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 op-amp gain with feedback (...)
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    VQFN (RTC) 48 View options

    Ordering & quality

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