ADS111x Ultra-Small, Low-Power, I2C-Compatible, 860SPS, 16-Bit ADCs with Internal Reference, Oscillator, and Programmable Comparator - Data Sheet

Sep 30, 2026

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ADS1113, ADS1114, and ADS1115 (ADS111x) precision, low-power, 16-bit, I2C-compatible analog-to-digital converters combine an internal low-drift voltage reference and an oscillator. ADS1114 and ADS1115 add a programmable gain amplifier and a digital comparator. Configurable data rates reach up to 860 samples per second, with PGA input ranges spanning ±256mV to ±6.144V. ADS1115 supports multiple input modes via a multiplexer, and the comparator enables under-voltage and over-voltage detection for space- and power-constrained sensing systems.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages57

Reading Time2 h 24 min

AccessFree to download

1 Features

2 Applications

3 Description

4 Pin Configuration and Functions

5 Specifications

5.1 Absolute Maximum Ratings

5.2 ESD Ratings

5.3 Recommended Operating Conditions

5.4 Thermal Information

5.5 Electrical Characteristics

5.6 Timing Requirements: I2C

5.7 Typical Characteristics

6 Parameter Measurement Information

6.1 Noise Performance

7 Detailed Description

7.1 Overview

7.2 Functional Block Diagrams

7.3 Feature Description

7.4 Device Functional Modes

7.5 Programming

8 Registers

8.1 Register Map

9 Application and Implementation

9.1 Application Information

9.2 Typical Application

10 Power Supply Recommendations

10.1 Power-Supply Sequencing

10.2 Power-Supply Decoupling

11 Layout

11.1 Layout Guidelines

11.2 Layout Example

12 Device and Documentation Support

12.1 Documentation Support

12.2 Receiving Notification of Documentation Updates

12.3 Support Resources

12.4 Trademarks

12.5 Electrostatic Discharge Caution

12.6 Glossary

13 Revision History

14 Mechanical, Packaging, and Orderable Information

ADS1113, ADS1114, ADS1115 SBAS444E – MAY 2009 – REVISED DECEMBER 2024 ADS111x Ultra-Small, Low-Power, I2C-Compatible, 860SPS, 16-Bit ADCs with Internal Reference, Oscillator, and Programmable Comparator 1 Features • Ultra-small packages: – X2QFN: 2mm × 1.5mm × 0.4mm – SOT: 2.9mm × 2.8mm × 0.6mm • Wide supply range: 2.0V to 5.5V • Low current consumption: 150μA (continuous-conversion mode) • Programmable data rate: 8SPS to 860SPS • Single-cycle settling • Internal low-drift voltage reference • Internal oscillator • I2C interface: four pin-selectable addresses • Operating temperature range: –40°C to +125°C • Family of devices: – ADS1113: one single-ended (SE) or differential (DE) input – ADS1114: one single-ended or differential input with comparator and PGA – ADS1115: four single-ended or two differential inputs with comparator and PGA 2 Applications • Portable instrumentation • Battery voltage and current monitoring • Temperature measurement systems • Consumer electronics • Factory automation and process control 3 Description The ADS1113, ADS1114, and ADS1115 (ADS111x) are precision, low-power, 16-bit, I2C-compatible, analog-to-digital converters (ADCs) offered in aleadless X2QFN-10, a SOT-10 package, anda 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, are useful for power- and space-constrained, sensor measurement applications. The ADS111x devices perform conversions at data rates of up to 860 samples per second (SPS) . The PGA offers input ranges from ±256mV to ±6 . 144V, 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 undervoltage and overvoltage detection. Package Information | PART NUMBER | PACKAGE(1) | PACKAGE SIZE(2) | | --- | --- | --- | | ADS111x | RUG (X2QFN, 10) | 1.50mm × 2.00mm | | | DYN (SOT, 10) | 2.90mm × 2.80mm | | | DGS (VSSOP, 10) | 3.00mm × 4.90mm | (1) For more information, see Section 14. (2) The package size (length × width) is a nominal value and includes pins, where applicable. Device Information | PART NUMBER | INPUT CHANNELS | FEATURES(1) | | --- | --- | --- | | ADS1113 | 1 DE (1 SE) | — | | ADS1114 | 1 DE (1 SE) | PGA, comparator | | ADS1115 | 2 DE (4 SE) | PGA, comparator | (1) See the Device Comparison Table for details. Simplified Block Diagrams An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. Table of Contents 1 Features............................................................................ 1 2 Applications..................................................................... 1 3 Description....................................................................... 1 4 Pin Configuration and Functions...................................3 5 Specifications.................................................................. 4 5.1 Absolute Maximum Ratings........................................ 4 5.2 ESD Ratings............................................................... 4 5.3 Recommended Operating Conditions.........................4 5.4 Thermal Information....................................................4 5.5 Electrical Characteristics.............................................5 5.6 Timing Requirements: I2C...........................................6 5.7 Typical Characteristics................................................ 7 6 Parameter Measurement Information.......................... 11 6.1 Noise Performance................................

FAQs

What are the key features of the ADS111x ADC family?

ADS1113, ADS1114, and ADS1115 provide precision, low-power, 16-bit conversion with an internal low-drift voltage reference and oscillator. ADS1114 and ADS1115 additionally include a programmable gain amplifier (PGA) and a digital comparator.

What data rate and input range are supported?

Conversions run at data rates up to 860 samples per second (SPS). With the PGA, ADS1114/ADS1115 support input ranges from ±256mV to ±6.144V for both small- and large-signal measurements.

How do the different devices differ in input channels and comparator capability?

ADS1113 offers one single-ended or differential input. ADS1114 supports one differential or single-ended input and includes PGA and comparator. ADS1115 supports two differential or four single-ended inputs via a multiplexer and also includes PGA and comparator for under-voltage and over-voltage detection.

Sep 30, 2026

Upload by James