SBAS444D May   2009  – January 2018 ADS1113 , ADS1114 , ADS1115

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Block Diagrams
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 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. 8 Parameter Measurement Information
    1. 8.1 Noise Performance
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagrams
    3. 9.3 Feature Description
      1. 9.3.1 Multiplexer
      2. 9.3.2 Analog Inputs
      3. 9.3.3 Full-Scale Range (FSR) and LSB Size
      4. 9.3.4 Voltage Reference
      5. 9.3.5 Oscillator
      6. 9.3.6 Output Data Rate and Conversion Time
      7. 9.3.7 Digital Comparator (ADS1114 and ADS1115 Only)
      8. 9.3.8 Conversion Ready Pin (ADS1114 and ADS1115 Only)
      9. 9.3.9 SMbus Alert Response
    4. 9.4 Device Functional Modes
      1. 9.4.1 Reset and Power-Up
      2. 9.4.2 Operating Modes
        1. 9.4.2.1 Single-Shot Mode
        2. 9.4.2.2 Continuous-Conversion Mode
      3. 9.4.3 Duty Cycling For Low Power
    5. 9.5 Programming
      1. 9.5.1 I2C Interface
        1. 9.5.1.1 I2C Address Selection
        2. 9.5.1.2 I2C General Call
        3. 9.5.1.3 I2C Speed Modes
      2. 9.5.2 Slave Mode Operations
        1. 9.5.2.1 Receive Mode
        2. 9.5.2.2 Transmit Mode
      3. 9.5.3 Writing To and Reading From the Registers
      4. 9.5.4 Data Format
    6. 9.6 Register Map
      1. 9.6.1 Address Pointer Register (address = N/A) [reset = N/A]
        1. Table 6. Address Pointer Register Field Descriptions
      2. 9.6.2 Conversion Register (P[1:0] = 0h) [reset = 0000h]
        1. Table 7. Conversion Register Field Descriptions
      3. 9.6.3 Config Register (P[1:0] = 1h) [reset = 8583h]
        1. Table 8. Config Register Field Descriptions
      4. 9.6.4 Lo_thresh (P[1:0] = 2h) [reset = 8000h] and Hi_thresh (P[1:0] = 3h) [reset = 7FFFh] Registers
        1. Table 9. Lo_thresh and Hi_thresh Register Field Descriptions
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1 Basic Connections
      2. 10.1.2 Single-Ended Inputs
      3. 10.1.3 Input Protection
      4. 10.1.4 Unused Inputs and Outputs
      5. 10.1.5 Analog Input Filtering
      6. 10.1.6 Connecting Multiple Devices
      7. 10.1.7 Quickstart Guide
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 Shunt Resistor Considerations
        2. 10.2.2.2 Operational Amplifier Considerations
        3. 10.2.2.3 ADC Input Common-Mode Considerations
        4. 10.2.2.4 Resistor (R1, R2, R3, R4) Considerations
        5. 10.2.2.5 Noise and Input Impedance Considerations
        6. 10.2.2.6 First-order RC Filter Considerations
        7. 10.2.2.7 Circuit Implementation
        8. 10.2.2.8 Results Summary
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
    1. 11.1 Power-Supply Sequencing
    2. 11.2 Power-Supply Decoupling
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Documentation Support
      1. 13.1.1 Related Documentation
    2. 13.2 Related Links
    3. 13.3 Receiving Notification of Documentation Updates
    4. 13.4 Community Resources
    5. 13.5 Trademarks
    6. 13.6 Electrostatic Discharge Caution
    7. 13.7 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

7.5 Electrical Characteristics

At VDD = 3.3 V, data rate = 8 SPS, and full-scale input voltage range (FSR) = ±2.048 V (unless otherwise noted).
Maximum and minimum specifications apply from TA = –40°C to +125°C. Typical specifications are at TA = 25°C.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
ANALOG INPUT
Common-mode input impedance FSR = ±6.144 V(1) 10 MΩ
FSR = ±4.096 V(1), FSR = ±2.048 V 6
FSR = ±1.024 V 3
FSR = ±0.512 V, FSR = ±0.256 V 100
Differential input impedance FSR = ±6.144 V(1) 22 MΩ
FSR = ±4.096 V(1) 15
FSR = ±2.048 V 4.9
FSR = ±1.024 V 2.4
FSR = ±0.512 V, ±0.256 V 710 kΩ
SYSTEM PERFORMANCE
Resolution (no missing codes) 16 Bits
DR Data rate 8, 16, 32, 64, 128, 250, 475, 860 SPS
Data rate variation All data rates –10% 10%
Output noise See Noise Performance section
INL Integral nonlinearity DR = 8 SPS, FSR = ±2.048 V(2) 1 LSB
Offset error FSR = ±2.048 V, differential inputs –3 ±1 3 LSB
FSR = ±2.048 V, single-ended inputs ±3
Offset drift over temperature FSR = ±2.048 V 0.005 LSB/°C
Long-term Offset drift FSR = ±2.048 V, TA = 125°C,
1000 hrs		 ±1 LSB
Offset power-supply rejection FSR = ±2.048 V, DC supply variation 1 LSB/V
Offset channel match Match between any two inputs 3 LSB
Gain error(3) FSR = ±2.048 V, TA = 25°C 0.01% 0.15%
Gain drift over temperature(3) FSR = ±0.256 V 7 ppm/°C
FSR = ±2.048 V 5 40
FSR = ±6.144 V(1) 5
Long-term gain drift(3) FSR = ±2.048 V, TA = 125°C,
1000 hrs		 ±0.05 %
Gain power-supply rejection 80 ppm/V
Gain match(3) Match between any two gains 0.02% 0.1%
Gain channel match Match between any two inputs 0.05% 0.1%
CMRR Common-mode rejection ratio At DC, FSR = ±0.256 V 105 dB
At DC, FSR = ±2.048 V 100
At DC, FSR = ±6.144 V(1) 90
fCM = 60 Hz, DR = 8 SPS 105
fCM = 50 Hz, DR = 8 SPS 105
DIGITAL INPUT/OUTPUT
VIH High-level input voltage 0.7 VDD 5.5 V
VIL Low-level input voltage GND 0.3 VDD V
VOL Low-level output voltage IOL = 3 mA GND 0.15 0.4 V
Input leakage current GND < VDIG< VDD –10 10 µA
POWER-SUPPLY
IVDD Supply current Power-down TA = 25°C 0.5 2 µA
5
Operating TA = 25°C 150 200
300
PD Power dissipation VDD = 5.0 V 0.9 mW
VDD = 3.3 V 0.5
VDD = 2.0 V 0.3
(1) This parameter expresses the full-scale range of the ADC scaling. No more than VDD + 0.3 V must be applied to the analog inputs of the device. See Table 3 more information.
(2) Best-fit INL; covers 99% of full-scale.
(3) Includes all errors from onboard PGA and voltage reference.