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ADS1115

ACTIVE

16-bit, 860-SPS, 4-channel, delta-sigma ADC with PGA, oscillator, VREF, comparator and I2C

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Data sheet

ADS1115

ACTIVE
Data sheet Order now

Product details

Resolution (Bits) 16 Sample rate (max) (ksps) 0.86 Number of input channels 4 Interface type I2C Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode Internal Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Features Comparator, Oscillator, PGA Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 0.3 Analog supply (min) (V) 2 Analog supply voltage (max) (V) 5.5 Digital supply (min) (V) 2 Digital supply (max) (V) 5.5
Resolution (Bits) 16 Sample rate (max) (ksps) 0.86 Number of input channels 4 Interface type I2C Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode Internal Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Features Comparator, Oscillator, PGA Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 0.3 Analog supply (min) (V) 2 Analog supply voltage (max) (V) 5.5 Digital supply (min) (V) 2 Digital supply (max) (V) 5.5
VSSOP (DGS) 10 14.7 mm² 3 x 4.9 X2QFN (RUG) 10 3 mm² 1.5 x 2
  • Ultra-Small X2QFN Package:
    2 mm × 1.5 mm × 0.4 mm
  • Wide Supply Range: 2.0 V to 5.5 V
  • Low Current Consumption: 150 µA
    (Continuous-Conversion Mode)
  • Programmable Data Rate:
    8 SPS to 860 SPS
  • Single-Cycle Settling
  • Internal Low-Drift Voltage Reference
  • Internal Oscillator
  • I2C Interface: Four Pin-Selectable Addresses
  • Four Single-Ended or Two Differential Inputs (ADS1115)
  • Programmable Comparator (ADS1114 and ADS1115)
  • Operating Temperature Range:
    –40°C to +125°C
  • Ultra-Small X2QFN Package:
    2 mm × 1.5 mm × 0.4 mm
  • Wide Supply Range: 2.0 V to 5.5 V
  • Low Current Consumption: 150 µA
    (Continuous-Conversion Mode)
  • Programmable Data Rate:
    8 SPS to 860 SPS
  • Single-Cycle Settling
  • Internal Low-Drift Voltage Reference
  • Internal Oscillator
  • I2C Interface: Four Pin-Selectable Addresses
  • Four Single-Ended or Two Differential Inputs (ADS1115)
  • Programmable Comparator (ADS1114 and ADS1115)
  • Operating Temperature Range:
    –40°C to +125°C

The ADS1113, ADS1114, and ADS1115 devices (ADS111x) are precision, low-power, 16-bit, I2C-compatible, analog-to-digital converters (ADCs) offered in an ultra-small, leadless, X2QFN-10 package, and a VSSOP-10 package. The ADS111x devices incorporate a low-drift voltage reference and an oscillator. The ADS1114 and ADS1115 also incorporate a programmable gain amplifier (PGA) and a digital comparator. These features, along with a wide operating supply range, make the ADS111x well suited for power- and space-constrained, sensor measurement applications.

The ADS111x perform conversions at data rates up to 860 samples per second (SPS). The PGA offers input ranges from ±256 mV to ±6.144 V, allowing precise large- and small-signal measurements. The ADS1115 features an input multiplexer (MUX) that allows two differential or four single-ended input measurements. Use the digital comparator in the ADS1114 and ADS1115 for under- and overvoltage detection.

The ADS111x operate in either continuous-conversion mode or single-shot mode. The devices are automatically powered down after one conversion in single-shot mode; therefore, power consumption is significantly reduced during idle periods.

The ADS1113, ADS1114, and ADS1115 devices (ADS111x) are precision, low-power, 16-bit, I2C-compatible, analog-to-digital converters (ADCs) offered in an ultra-small, leadless, X2QFN-10 package, and a VSSOP-10 package. The ADS111x devices incorporate a low-drift voltage reference and an oscillator. The ADS1114 and ADS1115 also incorporate a programmable gain amplifier (PGA) and a digital comparator. These features, along with a wide operating supply range, make the ADS111x well suited for power- and space-constrained, sensor measurement applications.

The ADS111x perform conversions at data rates up to 860 samples per second (SPS). The PGA offers input ranges from ±256 mV to ±6.144 V, allowing precise large- and small-signal measurements. The ADS1115 features an input multiplexer (MUX) that allows two differential or four single-ended input measurements. Use the digital comparator in the ADS1114 and ADS1115 for under- and overvoltage detection.

The ADS111x operate in either continuous-conversion mode or single-shot mode. The devices are automatically powered down after one conversion in single-shot mode; therefore, power consumption is significantly reduced during idle periods.

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ADS1113 ACTIVE 16-Bit 860SPS 1-Ch Delta-Sigma ADC With Oscillator, Voltage Reference, and I2C Lower channel count (4x), no comparator, no PGA
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Technical documentation

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Type Title Date
* Data sheet ADS111x Ultra-Small, Low-Power, I2C-Compatible, 860-SPS, 16-Bit ADCs With Internal Reference, Oscillator, and Programmable Comparator datasheet (Rev. D) PDF | HTML 08 Jan 2018
Application note Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 29 Mar 2023
Application note A Basic Guide to I2C PDF | HTML 08 Nov 2022
Application note Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs PDF | HTML 23 Mar 2022
Application note Ultra-Small, Precision Analog Temperature Sensor Measurement With ADC (Rev. A) 24 Aug 2021
EVM User's guide ADS1x15V2EVM-PDK User's Guide PDF | HTML 25 Mar 2021
E-book Fundamentals of Precision ADC Noise Analysis 19 Jun 2020
Circuit design Precision measurement circuit with 16 singled-ended channels and I2C interface 31 Oct 2019
Application note QFN and SON PCB Attachment (Rev. B) PDF | HTML 24 Aug 2018
Analog Design Journal How delta-sigma ADCs work, Part 1 (Rev. A) 19 Sep 2016
E-book Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs 19 Mar 2015
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

ADS1115EVM-PDK — ADS1115 16-bit, 860-SPS, 4-channel, delta-sigma ADC evaluation module performance demonstration kit

The ADS1115 evaluation module (EVM) performance demonstration kit (PDK) is a complete solution for evaluating the ADS1115, which is a 16-bit, ultra-small, low-power, precision analog-to-digital converter (ADC). Power and I/O are provided via USB connection and a simple software interface. Analog (...)

User guide: PDF | HTML
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Driver or library

ADS1015SW-LINUX — Linux driver for ADS1015

The Linux driver supports the ADS1015 and ADS1115 12-Bit ADCs with Integrated MUX, PGA, Comparator, Oscillator, and Reference. The Linux driver supports communication through the I2C bus and interfaces with the IIO sub-system.

 

Linux Mainline Status

Available in Linux Main line: Yes
Available through (...)

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Support software

SBAC223 — ADS1115EVM-PDK Software

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Supported products & hardware

Supported products & hardware

Products
Precision ADCs
ADS1115 — 16-bit, 860-SPS, 4-channel, delta-sigma ADC with PGA, oscillator, VREF, comparator and I2C
Hardware development
Evaluation board
ADS1115EVM-PDK — ADS1115 16-bit, 860-SPS, 4-channel, delta-sigma ADC evaluation module performance demonstration kit
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Support software

SBAC289 — ADS1115 Example C Code Software

Supported products & hardware

Supported products & hardware

Products
Precision ADCs
ADS1013 — 12-Bit 3.3kSPS 1-Ch Delta-Sigma ADC With Oscillator, Voltage Reference, and I2C ADS1014 — 12-Bit 3.3kSPS 1-Ch Delta-Sigma ADC With PGA, Oscillator, Voltage Reference, Comparator, and I2C ADS1015 — 12-bit, 3.3-kSPS, 4-channel, delta-sigma ADC with PGA, oscillator, VREF, comparator and I2C ADS1015-Q1 — Automotive 12-bit, 3.3-kSPS, 4-ch, delta-sigma ADC with PGA, oscillator, VREF, comparator and I2C ADS1113 — 16-Bit 860SPS 1-Ch Delta-Sigma ADC With Oscillator, Voltage Reference, and I2C ADS1114 — 16-Bit 860SPS 1-Ch Delta-Sigma ADC With PGA, Oscillator, Vref, Comparator, and I2C ADS1115 — 16-bit, 860-SPS, 4-channel, delta-sigma ADC with PGA, oscillator, VREF, comparator and I2C ADS1115-Q1 — Automotive 16-bit, 860-SPS, 4-ch, delta-sigma ADC with PGA, oscillator, VREF, comparator and I2C TLA2024 — 12-bit, 4-channel, delta-sigma ADC with voltage reference, oscillator, PGA and I2C
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Simulation model

ADS1013-5, ADS1113-5 IBIS Model

SBAM025.ZIP (19 KB) - IBIS Model
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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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Reference designs

TIDA-00824 — Human Skin Temperature Sensing for Wearable Applications Reference Design

TIDA-00824 features LMT70 analog temperature sensor for measuring human skin temperature. This reference design shows how to mechanically mount the temperature sensor for best thermal conductivity. Signal path considerations on how to achieve greater than 0.1°C accuracy is also discussed in (...)
Design guide: PDF
Schematic: PDF
Package Pins Download
VSSOP (DGS) 10 View options
X2QFN (RUG) 10 View options
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