SBAS650C
May 2014 – April 2021
AFE4403
PRODUCTION DATA
1
Features
2
Applications
3
Description
4
Revision History
5
Device Family Options
6
Pin Configuration and 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
7.7
Timing Requirements: Supply Ramp and Power-Down
7.8
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Receiver Channel
8.3.1.1
Receiver Front-End
8.3.1.2
Ambient Cancellation Scheme and Second Stage Gain Block
8.3.1.3
Receiver Control Signals
8.3.1.4
Receiver Timing
8.3.2
Clocking and Timing Signal Generation
8.3.3
Timer Module
8.3.3.1
Using the Timer Module
8.3.4
Receiver Subsystem Power Path
8.3.5
Transmit Section
8.3.5.1
Third LED Support
8.3.5.2
Transmitter Power Path
8.3.5.3
LED Power Reduction During Periods of Inactivity
8.3.5.4
LED Configurations
8.4
Device Functional Modes
8.4.1
ADC Operation and Averaging Module
8.4.1.1
Operation Without Averaging
8.4.1.2
Operation With Averaging
8.4.1.3
Dynamic Power-Down Mode
8.4.2
Diagnostics
8.4.2.1
Photodiode-Side Fault Detection
8.4.2.2
Transmitter-Side Fault Detection
8.4.2.3
Diagnostics Module
8.5
Programming
8.5.1
Serial Programming Interface
8.5.2
Reading and Writing Data
8.5.2.1
Writing Data
8.5.2.2
Reading Data
8.5.2.3
Multiple Data Reads and Writes
8.5.2.4
Register Initialization
8.5.2.5
AFE SPI Interface Design Considerations
8.6
Register Maps
8.6.1
AFE Register Map
8.6.2
AFE Register Description
9
Application Information Disclaimer
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.3
Application Curves
10
Power Supply Recommendations
10.1
Power Consumption Considerations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Trademarks
12.2
Electrostatic Discharge Caution
12.3
Glossary
13
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
YZP|36
MXBG349
Thermal pad, mechanical data (Package|Pins)
Orderable Information
sbas650c_oa
sbas650c_pm
2
Applications
Medical Pulse Oximeter Applicatio
ns
Optical HRM
Industrial Photometry Applications