SBAS511E july   2010  – july 2023 ADS1013-Q1 , ADS1014-Q1 , ADS1015-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6.   Device Comparison Table
  7. 5 Pin Configuration and Functions
  8. 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 Timing Requirements: I2C
    7. 6.7 Timing Diagram
    8. 6.8 Typical Characteristics
  9. 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 (ADS1014-Q1 and ADS1015-Q1 Only)
      8. 7.3.8 Conversion Ready Pin (ADS1014-Q1 and ADS1015-Q1 Only)
      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
      3. 7.4.3 Duty Cycling For Low Power
    5. 7.5 Programming
      1. 7.5.1 I2C Interface
        1. 7.5.1.1 I2C Address Selection
        2. 7.5.1.2 I2C General Call
        3. 7.5.1.3 I2C Speed Modes
      2. 7.5.2 Target Mode Operations
        1. 7.5.2.1 Receive Mode
        2. 7.5.2.2 Transmit Mode
      3. 7.5.3 Writing To and Reading From the Registers
      4. 7.5.4 Data Format
    6. 7.6 Register Map
      1. 7.6.1 Address Pointer Register (address = N/A) [reset = N/A]
      2. 7.6.2 Conversion Register (P[1:0] = 00b) [reset = 0000h]
      3. 7.6.3 Config Register (P[1:0] = 01b) [reset = 8583h]
      4. 7.6.4 Lo_thresh (P[1:0] = 10b) [reset = 8000h] and Hi_thresh (P[1:0] = 11b) [reset = 7FFFh] Registers
  10. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Basic Connections
      2. 8.1.2 Single-Ended Inputs
      3. 8.1.3 Input Protection
      4. 8.1.4 Unused Inputs and Outputs
      5. 8.1.5 Analog Input Filtering
      6. 8.1.6 Connecting Multiple Devices
      7. 8.1.7 Quick-Start Guide
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Shunt Resistor Considerations
        2. 8.2.2.2 Operational Amplifier Considerations
        3. 8.2.2.3 ADC Input Common-Mode Considerations
        4. 8.2.2.4 Resistor (R1, R2, R3, R4) Considerations
        5. 8.2.2.5 Noise and Input Impedance Considerations
        6. 8.2.2.6 First-Order RC Filter Considerations
        7. 8.2.2.7 Circuit Implementation
        8. 8.2.2.8 Results Summary
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
      1. 8.3.1 Power-Supply Sequencing
      2. 8.3.2 Power-Supply Decoupling
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  11. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  12. 10Mechanical, Packaging, and Orderable Information

Package Options

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

7.6.4 Lo_thresh (P[1:0] = 10b) [reset = 8000h] and Hi_thresh (P[1:0] = 11b) [reset = 7FFFh] Registers

These two registers are applicable to the ADS1015-Q1 and ADS1014-Q1. These registers serve no purpose in the ADS1013-Q1. The upper and lower threshold values used by the comparator are stored in two 16-bit registers in two's-complement format. The comparator is implemented as a digital comparator; therefore, the values in these registers must be updated whenever the PGA settings are changed.

The conversion-ready function of the ALERT/RDY pin is enabled by setting the Hi_thresh register MSB to 1b and the Lo_thresh register MSB to 0b. To use the comparator function of the ALERT/RDY pin, the Hi_thresh register value must always be greater than the Lo_thresh register value. The threshold register formats are shown in Figure 7-18. When set to RDY mode, the ALERT/RDY pin outputs the OS bit when in single-shot mode, and provides a continuous-conversion ready pulse when in continuous-conversion mode.

Figure 7-18 Lo_thresh Register
15 14 13 12 11 10 9 8
Lo_thresh[11:4]
R/W-80h
7 6 5 4 3 2 1 0
Lo_thresh[3:0] RESERVED
R/W-0h R-0h
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 7-7 Hi_thresh Register
15 14 13 12 11 10 9 8
Hi_thresh[11:4]
R/W-7Fh
7 6 5 4 3 2 1 0
Hi_thresh[3:0] RESERVED
R/W-Fh R-Fh
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 7-8 Lo_thresh and Hi_thresh Register Field Descriptions
Bit Field Type Reset Description
15:4 Lo_thresh[11:0] R/W 800h Low threshold value
15:4 Hi_thresh[11:0] R/W 7FFh High threshold value