SBAS444D
May 2009 – January 2018
ADS1113
,
ADS1114
,
ADS1115
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Device Images
Simplified Block Diagrams
4
Revision History
5
Device Comparison Table
6
Pin Configuration and Functions
Pin Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Timing Requirements: I2C
7.7
Typical Characteristics
8
Parameter Measurement Information
8.1
Noise Performance
9
Detailed Description
9.1
Overview
9.2
Functional Block Diagrams
9.3
Feature Description
9.3.1
Multiplexer
9.3.2
Analog Inputs
9.3.3
Full-Scale Range (FSR) and LSB Size
9.3.4
Voltage Reference
9.3.5
Oscillator
9.3.6
Output Data Rate and Conversion Time
9.3.7
Digital Comparator (ADS1114 and ADS1115 Only)
9.3.8
Conversion Ready Pin (ADS1114 and ADS1115 Only)
9.3.9
SMbus Alert Response
9.4
Device Functional Modes
9.4.1
Reset and Power-Up
9.4.2
Operating Modes
9.4.2.1
Single-Shot Mode
9.4.2.2
Continuous-Conversion Mode
9.4.3
Duty Cycling For Low Power
9.5
Programming
9.5.1
I2C Interface
9.5.1.1
I2C Address Selection
9.5.1.2
I2C General Call
9.5.1.3
I2C Speed Modes
9.5.2
Slave Mode Operations
9.5.2.1
Receive Mode
9.5.2.2
Transmit Mode
9.5.3
Writing To and Reading From the Registers
9.5.4
Data Format
9.6
Register Map
9.6.1
Address Pointer Register (address = N/A) [reset = N/A]
Table 6.
Address Pointer Register Field Descriptions
9.6.2
Conversion Register (P[1:0] = 0h) [reset = 0000h]
Table 7.
Conversion Register Field Descriptions
9.6.3
Config Register (P[1:0] = 1h) [reset = 8583h]
Table 8.
Config Register Field Descriptions
9.6.4
Lo_thresh (P[1:0] = 2h) [reset = 8000h] and Hi_thresh (P[1:0] = 3h) [reset = 7FFFh] Registers
Table 9.
Lo_thresh and Hi_thresh Register Field Descriptions
10
Application and Implementation
10.1
Application Information
10.1.1
Basic Connections
10.1.2
Single-Ended Inputs
10.1.3
Input Protection
10.1.4
Unused Inputs and Outputs
10.1.5
Analog Input Filtering
10.1.6
Connecting Multiple Devices
10.1.7
Quickstart Guide
10.2
Typical Application
10.2.1
Design Requirements
10.2.2
Detailed Design Procedure
10.2.2.1
Shunt Resistor Considerations
10.2.2.2
Operational Amplifier Considerations
10.2.2.3
ADC Input Common-Mode Considerations
10.2.2.4
Resistor (R1, R2, R3, R4) Considerations
10.2.2.5
Noise and Input Impedance Considerations
10.2.2.6
First-order RC Filter Considerations
10.2.2.7
Circuit Implementation
10.2.2.8
Results Summary
10.2.3
Application Curves
11
Power Supply Recommendations
11.1
Power-Supply Sequencing
11.2
Power-Supply Decoupling
12
Layout
12.1
Layout Guidelines
12.2
Layout Example
13
Device and Documentation Support
13.1
Documentation Support
13.1.1
Related Documentation
13.2
Related Links
13.3
Receiving Notification of Documentation Updates
13.4
Community Resources
13.5
Trademarks
13.6
Electrostatic Discharge Caution
13.7
Glossary
14
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
DGS|10
MPDS035C
RUG|10
MPQF216A
Thermal pad, mechanical data (Package|Pins)
Orderable Information
sbas444d_oa
sbas444d_pm
7.7
Typical Characteristics
at T
A
= 25°C, VDD = 3.3 V, FSR = ±2.048 V, DR = 8 SPS (unless otherwise noted)
Figure 2.
Operating Current vs Temperature
Figure 4.
Single-Ended Offset Error vs Temperature
Figure 6.
Gain Error vs Temperature
Figure 8.
INL vs Supply Voltage
VDD = 3.3 V, FSR = ±0.512 V, DR = 8 SPS, best fit
Figure 10.
INL vs Input Signal
VDD = 5 V, FSR = ±0.512 V, DR = 8 SPS, best fit
Figure 12.
INL vs Input Signal
FSR = ±0.512 V
Figure 14.
Noise vs Input Signal
FSR = ±2.048 V, DR = 8 SPS
Figure 16.
Noise vs Temperature
FSR = ±2.048 V, 185 units
Figure 18.
Offset Histogram
Figure 20.
Data Rate vs Temperature
Figure 3.
Power-Down Current vs Temperature
Figure 5.
Differential Offset vs Temperature
Figure 7.
Gain Error vs Supply Voltage
VDD = 3.3 V, FSR = ±2.048 V, DR = 8 SPS, best fit
Figure 9.
INL vs Input Signal
VDD = 5 V, FSR = ±2.048 V, DR = 8 SPS, best fit
Figure 11.
INL vs Input Signal
Figure 13.
INL vs Temperature
FSR = ±2.048 V
Figure 15.
Noise vs Supply Voltage
FSR = ±2.048 V, 185 units
Figure 17.
Gain Error Histogram
Differential inputs; includes noise, offset and gain error
Figure 19.
Total Error vs Input Signal
DR = 8 SPS
Figure 21.
Digital Filter Frequency Response