JAJU835
December
2021
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概要
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リソース
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特長
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アプリケーション
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5
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1System Description
- 1.1
Key System Specifications
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2System Overview
- 2.1
Block Diagram
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10
- 2.2
Highlighted Products
- 2.2.1
DRV5056
- 2.2.2
DRV5032
- 2.2.3
TPS709
- 2.2.4
SN74HCS00
- 2.2.5
TPS22917
- 2.2.6
SN74AUP1G00
- 2.2.7
TLV9061
- 2.3
Design Considerations
- 2.3.1
Design Hardware Implementation
- 2.3.1.1
Hall-Effect Switches
- 2.3.1.1.1
U1 Wake-Up Sensor Configuration
- 2.3.1.1.2
U2 Stray-Field Sensor Configuration
- 2.3.1.1.3
U3 and U4 Tamper Sensor Configuration
- 2.3.1.1.4
Hall Switch Placement
- 2.3.1.1.4.1
Placement of U1 and U2 Sensors
- 2.3.1.1.4.1.1
U1 and U2 Magnetic Flux Density Estimation Results
- 2.3.1.1.4.2
Placement of U3 and U4 Hall Switches
- 2.3.1.1.4.2.1
U3 and U4 Magnetic Flux Density Estimation Results
- 2.3.1.1.5
Using Logic Gates to Combine Outputs from
Hall-Effect Switches
- 2.3.1.2
Linear Hall-Effect Sensor Output
- 2.3.1.2.1
DRV5056 Power
- 2.3.1.2.2
DRV5056 Output Voltage
- 2.3.1.2.3
DRV5056 Placement
- 2.3.1.3
Power Supply
- 2.3.1.4
Transistor Circuit for Creating High-Voltage Enable Signal
- 2.3.2
Alternative Implementations
- 2.3.2.1
Replacing 20-Hz Tamper Switches With 5-Hz
Tamper Switches
- 2.3.2.2
Using Shielding to Replace Tamper Switches and
Stray Field Switch
- 2.3.2.3
Replacing Hall-Based Wake-Up Alert Function
With a Mechanical Switch
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3Hardware, Software, Testing Requirements,
and Test Results
- 3.1
Hardware Requirements
- 3.1.1
Installation and Demonstration
Instructions
- 3.1.2
Test Points and LEDs
- 3.1.3
Configuration Options
- 3.1.3.1
Disabling Hall-Effect Switches
- 3.1.3.2
Configuring Hardware for Standalone Mode or Connection to External Systems
- 3.2
Test Setup
- 3.2.1
Output Voltage Accuracy Testing
- 3.2.2
Magnetic Tampering Testing
- 3.2.3
Current Consumption Testing
- 3.3
Test Results
- 3.3.1
Output Voltage Accuracy Pre-Calibration Results
- 3.3.2
Output Voltage Accuracy Post-Calibration Results
- 3.3.3
Magnetic Tampering Results
- 3.3.4
Current Consumption Results
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4Design and Documentation Support
- 4.1
Design Files
- 4.1.1
Schematics
- 4.1.2
BOM
- 4.2
Tools and Software
- 4.3
Documentation Support
- 4.4
サポート・リソース
- 4.5
Trademarks
4.3 Documentation Support
- Texas Instruments, DRV5056 Unipolar
Ratiometric Linear Hall Effect Sensor data sheet
- Texas Instruments, DRV5032 Ultra-Low-Power Digital-Switch Hall Effect
Sensor data sheet
- Texas Instruments, TPS709 150-mA, 30-V, 1-μA IQ Voltage
Regulators With Enable data sheet
- Texas Instruments, TPS22917x 1 V–5.5-V, 2-A, 80-mΩ Ultra-Low Leakage
Load Switch data sheet
- Texas Instruments, SN74HCS00 Quadruple 2-Input NAND Gates with
Schmitt-Trigger Inputs data sheet
- Texas Instruments, SN74AUP1G00 Low-Power Single 2-Input Positive-NAND
Gate data sheet
- Texas Instruments, TLV906xS 10-MHz, RRIO, CMOS Operational Amplifiers
for Cost-Sensitive Systems data sheet
- Texas Instruments, TI Precision Labs - Introduction to head-on
applications video