SBASAV7 January   2024 ADS1014L , ADS1015L

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 I2C Timing Requirements
    7. 6.7 Timing Diagram
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
      1. 7.3.1 Multiplexer
      2. 7.3.2 Analog Inputs
      3. 7.3.3 Full-Scale Range (FSR) and LSB Size
      4. 7.3.4 Voltage Reference
      5. 7.3.5 Oscillator
      6. 7.3.6 Output Data Rate and Conversion Time
      7. 7.3.7 Digital Comparator
      8. 7.3.8 Conversion-Ready Pin
      9. 7.3.9 SMBus Alert Response
    4. 7.4 Device Functional Modes
      1. 7.4.1 Reset and Power-Up
      2. 7.4.2 Operating Modes
        1. 7.4.2.1 Single-Shot Mode
        2. 7.4.2.2 Continuous-Conversion Mode
    5. 7.5 Programming
      1. 7.5.1 I2C Interface
        1. 7.5.1.1 I2C Address Selection
        2. 7.5.1.2 I2C Interface Speed
          1. 7.5.1.2.1 Serial Clock (SCL) and Serial Data (SDA)
        3. 7.5.1.3 I2C Data Transfer Protocol
        4. 7.5.1.4 Timeout
        5. 7.5.1.5 I2C General-Call (Software Reset)
      2. 7.5.2 Reading and Writing Register Data
        1. 7.5.2.1 Reading Conversion Data or the Configuration Register
        2. 7.5.2.2 Writing the Configuration Register
      3. 7.5.3 Data Format
  9. 8 Register Map
  10. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Basic Connections
      2. 9.1.2 Unused Inputs and Outputs
      3. 9.1.3 Single-Ended Inputs
      4. 9.1.4 Input Protection
      5. 9.1.5 Analog Input Filtering
      6. 9.1.6 Connecting Multiple Devices
      7. 9.1.7 Duty Cycling For Low Power
      8. 9.1.8 I2C Communication Sequence Example
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curve
    3. 9.3 Power Supply Recommendations
      1. 9.3.1 Power-Supply Sequencing
      2. 9.3.2 Power-Supply Decoupling
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Receiving Notification of Documentation Updates
    2. 10.2 Support Resources
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

9.1.8 I2C Communication Sequence Example

This section provides an example of an I2C communication sequence between a microcontroller (the controller) and a ADS101xL (the target) configured with a target address of 1001 000b to start a single-shot conversion and subsequently read the conversion result.

  1. Write the Configuration register as shown in Figure 9-6 to configure the device (for example, when using the ADS1015L, write MUX[2:0] = 000b, PGA[2:0] = 010b, MODE = 1b, and DR[2:0] = 110b) and start a single-shot conversion (OS = 1b).
    ADS1014L ADS1015L Write the Configuration Register Figure 9-5 Write the Configuration Register
  2. Wait at least t = 1 / DR ± 10% for the conversion to complete.

    Alternatively, poll the OS bit for a 1b as shown in Figure 9-6 to determine when the conversion result is ready for retrieval. This option does not work in continuous-conversion mode because the OS bit always reads 0b.

    ADS1014L ADS1015L Read the Configuration Register to Check for OS = 1b Figure 9-6 Read the Configuration Register to Check for OS = 1b
  3. Then, as shown in Figure 9-7, read the Conversion register.
    ADS1014L ADS1015L Read the Conversion Register Figure 9-7 Read the Conversion Register
  4. Start a new single-shot conversion by writing a 1b to the OS bit in the Configuration register.

    To save time, a new conversion can also be started (step 4) before reading the conversion result (step 3). Figure 9-8 lists a legend for Figure 9-5 to Figure 9-7.

ADS1014L ADS1015L Legend for the I2C Sequence Diagrams Figure 9-8 Legend for the I2C Sequence Diagrams