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INA241x-Q1 AEC-Q100, –5V to 110V, Bidirectional, Ultra-Precise Current Sense Amplifier With Enhanced PWM Rejection
SBOSA31C
February 2023 – December 2024
INA241A-Q1
,
INA241B-Q1
PRODUCTION DATA
CONTENTS
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INA241x-Q1 AEC-Q100, –5V to 110V, Bidirectional, Ultra-Precise Current Sense Amplifier With Enhanced PWM Rejection
1
1
Features
2
Applications
3
Description
4
Device Comparison
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
Electrical Characteristics
6.6
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Amplifier Input Common-Mode Signal
7.3.1.1
Enhanced PWM Rejection Operation
7.3.1.2
Input-Signal Bandwidth
7.3.1.3
Low Input Bias Current
7.3.1.4
Low VSENSE Operation
7.3.1.5
Wide Fixed Gain Output
7.3.1.6
Wide Supply Range
7.4
Device Functional Modes
7.4.1
Adjusting the Output With the Reference Pins
7.4.2
Reference Pin Connections for Unidirectional Current Measurements
7.4.2.1
Ground Referenced Output
7.4.2.2
VS Referenced Output
7.4.3
Reference Pin Connections for Bidirectional Current Measurements
7.4.3.1
Output Set to External Reference Voltage
7.4.3.2
Output Set to Mid-Supply Voltage
7.4.3.3
Output Set to Mid-External Reference
7.4.3.4
Output Set Using Resistor Divider
7.4.4
High Signal Throughput
8
Application and Implementation
8.1
Application Information
8.1.1
RSENSE and Device Gain Selection
8.2
Typical Application
8.2.1
Inline Motor Current-Sense Application
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.3
Application Curve
8.3
Power Supply Recommendations
8.3.1
Power Supply Decoupling
8.4
Layout
8.4.1
Layout Guidelines
8.4.2
Layout Examples
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
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
D|8
MSOI002K
DGS|10
MPDS035C
DGK|8
MPDS028E
DDF|8
MPDS569D
Thermal pad, mechanical data (Package|Pins)
Orderable Information
sbosa31c_oa
sbosa31c_pm
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Data Sheet
INA241x-Q1
AEC-Q100,
–5V to 110V, Bidirectional, Ultra-Precise Current Sense Amplifier
With Enhanced PWM Rejection