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PGA460 Ultrasonic Signal Processor and Transducer Driver
SLASEJ4C
April 2017 – February 2023
PGA460
PRODUCTION DATA
CONTENTS
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PGA460 Ultrasonic Signal Processor and Transducer Driver
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Internal Supply Regulators Characteristics
6.6
Transducer Driver Characteristics
6.7
Transducer Receiver Characteristics
6.8
Analog to Digital Converter Characteristics
6.9
Digital Signal Processing Characteristics
6.10
Temperature Sensor Characteristics
6.11
High-Voltage I/O Characteristics
6.12
Digital I/O Characteristics
6.13
EEPROM Characteristics
6.14
Timing Requirements
6.15
Switching Characteristics
6.16
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Power-Supply Block
7.3.2
Burst Generation
7.3.2.1
Using Center-Tap Transformer
7.3.2.2
Direct Drive
7.3.2.3
Other Configurations
7.3.3
Analog Front-End
7.3.4
Digital Signal Processing
7.3.4.1
Ultrasonic Echo—Band-Pass Filter
7.3.4.2
Ultrasonic Echo–Rectifier, Peak Hold, Low-Pass Filter, and Data Selection
7.3.4.3
Ultrasonic Echo—Nonlinear Scaling
7.3.4.4
Ultrasonic Echo—Threshold Data Assignment
7.3.4.5
Digital Gain
7.3.5
System Diagnostics
7.3.5.1
Device Internal Diagnostics
7.3.6
Interface Description
7.3.6.1
Time-Command Interface
7.3.6.1.1
RUN Commands
7.3.6.1.2
CONFIGURATION/STATUS Command
7.3.6.2
USART Interface
7.3.6.2.1
USART Asynchronous Mode
7.3.6.2.1.1
Sync Field
7.3.6.2.1.2
Command Field
7.3.6.2.1.3
Data Fields
7.3.6.2.1.4
Checksum Field
7.3.6.2.1.5
PGA460 UART Commands
7.3.6.2.1.6
UART Operations
7.3.6.2.1.6.1
No-Response Operation
7.3.6.2.1.6.2
Response Operation (All Except Register Read)
7.3.6.2.1.6.3
Response Operation (Register Read)
7.3.6.2.1.7
Diagnostic Field
7.3.6.2.1.8
USART Synchronous Mode
7.3.6.2.2
One-Wire UART Interface
7.3.6.2.3
Ultrasonic Object Detection Through UART Operations
7.3.6.3
In-System IO-Pin Interface Selection
7.3.7
Echo Data Dump
7.3.7.1
On-Board Memory Data Store
7.3.7.2
Direct Data Burst Through USART Synchronous Mode
7.3.8
Low-Power Mode
7.3.8.1
Time-Command Interface
7.3.8.2
UART Interface
7.3.9
Transducer Time and Temperature Decoupling
7.3.9.1
Time Decoupling
7.3.9.2
Temperature Decoupling
7.3.10
Memory CRC Calculation
7.3.11
Temperature Sensor and Temperature Data-Path
7.3.12
TEST Pin Functionality
7.4
Device Functional Modes
7.5
Programming
7.5.1
UART and USART Communication Examples
7.6
Register Maps
7.6.1
EEPROM Programming
7.6.2
Register Map Partitioning and Default Values
7.6.3
REGMAP Registers
8
Application and Implementation
8.1
Application Information
8.1.1
Transducer Types
8.2
Typical Applications
8.2.1
Transformer-Driven Method
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.2.1
Transducer Driving Voltage
8.2.1.2.2
Transducer Driving Frequency
8.2.1.2.3
Transducer Pulse Count
8.2.1.2.4
Transformer Turns Ratio
8.2.1.2.5
Transformer Saturation Current and Main Voltage Rating
8.2.1.3
Application Curves
8.2.2
Direct-Driven (Transformer-Less) Method
8.2.2.1
Design Requirements
8.2.2.2
Detailed Design Procedure
8.2.2.3
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
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
PW|16
MPDS361A
Thermal pad, mechanical data (Package|Pins)
Orderable Information
slasej4c_oa
slasej4c_pm
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