SBAS511C July   2010  – January 2018 ADS1013-Q1 , ADS1014-Q1 , ADS1015-Q1

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
    1.     Device Images
      1.      Simplified Block Diagrams
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
    1.     Pin Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements: I2C
    7. 7.7 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagrams
    3. 8.3 Feature Description
      1. 8.3.1 Multiplexer
      2. 8.3.2 Analog Inputs
      3. 8.3.3 Full-Scale Range (FSR) and LSB Size
      4. 8.3.4 Voltage Reference
      5. 8.3.5 Oscillator
      6. 8.3.6 Output Data Rate and Conversion Time
      7. 8.3.7 Digital Comparator (ADS1014-Q1 and ADS1015-Q1 Only)
      8. 8.3.8 Conversion Ready Pin (ADS1014-Q1 and ADS1015-Q1 Only)
      9. 8.3.9 SMbus Alert Response
    4. 8.4 Device Functional Modes
      1. 8.4.1 Reset and Power-Up
      2. 8.4.2 Operating Modes
        1. 8.4.2.1 Single-Shot Mode
        2. 8.4.2.2 Continuous-Conversion Mode
      3. 8.4.3 Duty Cycling For Low Power
    5. 8.5 Programming
      1. 8.5.1 I2C Interface
        1. 8.5.1.1 I2C Address Selection
        2. 8.5.1.2 I2C General Call
        3. 8.5.1.3 I2C Speed Modes
      2. 8.5.2 Slave Mode Operations
        1. 8.5.2.1 Receive Mode
        2. 8.5.2.2 Transmit Mode
      3. 8.5.3 Writing To and Reading From the Registers
      4. 8.5.4 Data Format
    6. 8.6 Register Map
      1. 8.6.1 Address Pointer Register (address = N/A) [reset = N/A]
        1. Table 4. Address Pointer Register Field Descriptions
      2. 8.6.2 Conversion Register (P[1:0] = 0h) [reset = 0000h]
        1. Table 5. Conversion Register Field Descriptions
      3. 8.6.3 Config Register (P[1:0] = 1h) [reset = 8583h]
        1. Table 6. Config Register Field Descriptions
      4. 8.6.4 Lo_thresh (P[1:0] = 2h) [reset = 8000h] and Hi_thresh (P[1:0] = 3h) [reset = 7FFFh] Registers
        1. Table 7. Lo_thresh and Hi_thresh Register Field Descriptions
  9. Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Basic Connections
      2. 9.1.2 Single-Ended Inputs
      3. 9.1.3 Input Protection
      4. 9.1.4 Unused Inputs and Outputs
      5. 9.1.5 Analog Input Filtering
      6. 9.1.6 Connecting Multiple Devices
      7. 9.1.7 Quickstart Guide
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Shunt Resistor Considerations
        2. 9.2.2.2 Operational Amplifier Considerations
        3. 9.2.2.3 ADC Input Common-Mode Considerations
        4. 9.2.2.4 Resistor (R1, R2, R3, R4) Considerations
        5. 9.2.2.5 Noise and Input Impedance Considerations
        6. 9.2.2.6 First-order RC Filter Considerations
        7. 9.2.2.7 Circuit Implementation
        8. 9.2.2.8 Results Summary
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
    1. 10.1 Power-Supply Sequencing
    2. 10.2 Power-Supply Decoupling
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Related Links
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Community Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

Quickstart Guide

This section provides a brief example of ADS101x-Q1 communications. See subsequent sections of this data sheet for more detailed explanations. Hardware for this design includes: one ADS101x-Q1 configured with an I2C address of 1001000; a microcontroller with an I2C interface; discrete components such as resistors, capacitors, and serial connectors; and a 2 V to 5 V power supply. Figure 28 shows the basic hardware configuration.

The ADS101x-Q1 communicate with the master (microcontroller) through an I2C interface. The master provides a clock signal on the SCL pin and data are transferred using the SDA pin. The ADS101x-Q1 never drive the SCL pin. For information on programming and debugging the microcontroller being used, see the device-specific product data sheet.

The first byte sent by the master is the ADS101x-Q1 address, followed by the R/W bit that instructs the ADS101x-Q1 to listen for a subsequent byte. The second byte is the Address Pointer register byte. The third and fourth bytes sent from the master are written to the register indicated in register address pointer bits P[1:0]. See Figure 15 and Figure 16 for read and write operation timing diagrams, respectively. All read and write transactions with the ADS101x-Q1 must be preceded by a START condition, and followed by a STOP condition.

For example, to write to the configuration register to set the ADS101x-Q1 to continuous-conversion mode and then read the conversion result, send the following bytes in this order:

  1. Write to Config register:
    • First byte: 0b10010000 (first 7-bit I2C address followed by a low R/W bit)
    • Second byte: 0b00000001 (points to Config register)
    • Third byte: 0b10000100 (MSB of the Config register to be written)
    • Fourth byte: 0b10000011 (LSB of the Config register to be written)
  2. Write to Address Pointer register:
    • First byte: 0b10010000 (first 7-bit I2C address followed by a low R/W bit)
    • Second byte: 0b00000000 (points to Conversion register)
  3. Read Conversion register:
    • First byte: 0b10010001 (first 7-bit I2C address followed by a high R/W bit)
    • Second byte: the ADS101x-Q1 response with the MSB of the Conversion register
    • Third byte: the ADS101x-Q1 response with the LSB of the Conversion register