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INA253-Q1 AEC-Q100, 80-V, Bidirectional, Precision Current Sense Amplifier With PWM Rejection and Integrated Shunt Resistor
SBOS950A
July 2019 – January 2021
INA253-Q1
PRODUCTION DATA
CONTENTS
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INA253-Q1 AEC-Q100, 80-V, Bidirectional, Precision Current Sense Amplifier With PWM Rejection and Integrated Shunt Resistor
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
Electrical Characteristics
6.6
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Integrated Shunt Resistor
7.3.2
Short-Circuit Duration
7.3.3
Temperature Stability
7.3.4
Enhanced PWM Rejection Operation
7.3.5
Input Signal Bandwidth
7.4
Device Functional Modes
7.4.1
Adjusting the Output Midpoint With the Reference Pins
7.4.2
Reference Pin Connections for Unidirectional Current Measurements
7.4.3
Ground Referenced Output
7.4.4
Reference Pin Connections for Bidirectional Current Measurements
7.4.4.1
Output Set to External Reference Voltage
7.4.5
Output Set to Mid-Supply Voltage
7.4.6
Output Set to Mid-External Reference
7.4.7
Output Set Using Resistor Divide
8
Application and Implementation
8.1
Application Information
8.1.1
Input Filtering
8.2
Typical Applications
8.2.1
High-Side, High-Drive, Solenoid Current-Sense Application
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.3
Application Curve
8.2.2
Speaker Enhancements and Diagnostics Using Current Sense Amplifier
8.2.2.1
Design Requirements
8.2.2.2
Detailed Design Procedure
8.2.2.3
Application Curve
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Device Support
11.1.1
Development Support
11.2
Related Documentation
11.3
Receiving Notification of Documentation Updates
11.4
Support Resources
11.5
Trademarks
11.6
Electrostatic Discharge Caution
11.7
Glossary
12
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
PW|20
MPDS362A
Thermal pad, mechanical data (Package|Pins)
Orderable Information
sbos950a_oa
sbos950a_pm
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DATA SHEET
INA253-Q1 AEC-Q100, 80-V, Bidirectional, Precision Current Sense Amplifier With PWM Rejection and Integrated Shunt Resistor
1
Features
AEC-Q100 qualified for automotive applications:
Temperature grade 1: –40 °C to +125 °C, T
A
Functional Safety-Capable
Documentation available to aid functional safety system design
Precision integrated shunt resistor
Shunt resistor: 2 mΩ
Shunt inductance: 3 nH
Shunt resistor tolerance: 0.1% (maximum)
±15 A continuous from –40 °C to +85 °C
0 °C to 125 °C temperature coefficient:
10 ppm/°C
High bandwidth: 350 kHz
Enhanced PWM rejection
Excellent CMRR
> 120-dB DC CMRR
90-dB AC CMRR at 50 kHz
Accuracy:
Gain:
Gain error: 0.4% (maximum)
Gain drift: 45 ppm/°C (maximum)
Offset:
Offset current: ±15 mA (maximum)
Offset drift: 125 µA/°C (maximum)
Wide common-mode range: –4 V to +80 V
Available gains: 100 mV/A, 200 mV/A,
and 400 mV/A
Quiescent current: 2.4 mA (maximum)
2
Applications
Diesel engine
Gasoline engine
Valve or motor actuator
Automatic transmission
Manual transmission
Powertrain current sensor