SBASAG2
December 2023
ADS9227
ADVMIX
1
1
Features
2
Applications
3
Description
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Thermal Information
5.4
Recommended Operating Conditions
5.5
Electrical Characteristics
5.6
Timing Requirements
5.7
Switching Characteristics
5.8
Timing Diagrams
5.9
Typical Characteristics: ADS9228
5.10
Typical Characteristics: ADS9227
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
Analog Inputs
6.3.2
Analog Input Bandwidth
6.3.3
ADC Transfer Function
6.3.4
Reference
6.3.4.1
Internal Reference Voltage
6.3.4.2
External Reference Voltage
6.3.5
Data Averaging
6.3.6
Data Interface
6.3.6.1
Data Frame Width
6.3.6.2
Test Patterns for Data Interface
6.3.6.2.1
User-defined Test Pattern
6.3.6.2.2
User-defined Alternating Test Pattern
6.3.6.2.3
Ramp Test Pattern
6.3.7
ADC Sampling Clock Input
6.4
Device Functional Modes
6.4.1
Reset
6.4.2
Power-down Options
6.4.3
Normal Operation
6.4.4
Initialization Sequence
6.5
Programming
6.5.1
Register Write
6.5.2
Register Read
6.5.3
Multiple Devices: Daisy-Chain Topology for SPI Configuration
6.5.3.1
Register Write With Daisy-Chain
6.5.3.2
Register Read With Daisy-Chain
7
Register Map
7.1
Register Bank 0
7.2
Register Bank 1
7.3
Register Bank 2
8
Application and Implementation
8.1
Application Information
8.2
Typical Applications
8.2.1
Data Acquisition (DAQ) Circuit for ≤20-kHz Input Signal Bandwidth
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.3
Application Curves
8.2.2
Data Acquisition (DAQ) Circuit for ≤100-kHz Input Signal Bandwidth
8.2.2.1
Design Requirements
8.2.2.2
Application Curves
8.2.3
Data Acquisition (DAQ) Circuit for ≤1-MHz Input Signal Bandwidth
8.2.3.1
Design Requirements
8.2.3.2
Application Curves
8.3
Power Supply Recommendations
8.4
Layout
8.4.1
Layout Guidelines
8.4.2
Layout Example
9
Device and Documentation Support
9.1
Documentation Support
9.1.1
Related Documentation
9.2
Receiving Notification of Documentation Updates
9.3
Support Resources
9.4
Trademarks
9.5
Electrostatic Discharge Caution
9.6
Glossary
10
Revision History
11
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
RHA|40
MPQF135D
Thermal pad, mechanical data (Package|Pins)
Orderable Information
sbasag2_oa
Data Sheet
ADS922x Dual, Simultaneous-Sampling, 16-Bit, 10-MSPS SAR ADCs With Fully Differential ADC Input Driver