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AMC3302-Q1 Automotive High-Precision, ±50-mV Input, Reinforced Isolated Amplifier With Integrated DC/DC Converter
SBASA84A
February 2021 – July 2021
AMC3302-Q1
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AMC3302-Q1 Automotive High-Precision, ±50-mV Input, Reinforced Isolated Amplifier With Integrated DC/DC Converter
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
Power Ratings
6.6
Insulation Specifications
6.7
Safety-Related Certifications
6.8
Safety Limiting Values
6.9
Electrical Characteristics
6.10
Switching Characteristics
6.11
Timing Diagram
6.12
Insulation Characteristics Curves
6.13
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Analog Input
7.3.2
Data Isolation Channel Signal Transmission
7.3.3
Analog Output
7.3.4
Isolated DC/DC Converter
7.3.5
Diagnostic Output
7.4
Device Functional Modes
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Shunt Resistor Sizing
8.2.2.2
Input Filter Design
8.2.2.3
Differential to Single-Ended Output Conversion
8.2.3
Application Curve
8.3
What to Do and What Not to Do
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Documentation Support
11.1.1
Related Documentation
11.2
Receiving Notification of Documentation Updates
11.3
Support Resources
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
Glossary
12
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
DWE|16
MPSS091
Thermal pad, mechanical data (Package|Pins)
Orderable Information
sbasa84a_oa
sbasa84a_pm
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DATA SHEET
AMC3302-Q1 Automotive High-Precision, ±50-mV Input, Reinforced Isolated Amplifier With Integrated DC/DC Converter
1
Features
AEC-Q100 qualified for automotive applications:
Temperature grade 1: –40°C to +125°C, T
A
3.3-V or 5-V single supply with integrated DC/DC converter
±50-mV input voltage range optimized for current measurement using shunt resistors
Fixed gain: 41
Low DC errors:
Offset voltage: ±50 µV (maximum)
Offset drift: ±0.5 µV/°C (maximum)
Gain error: ±0.2% (maximum)
Gain error drift: ±35 ppm/°C (maximum)
Nonlinearity: ±0.03% (maximum)
High CMTI: 95 kV/µs (minimum)
System-level diagnostic features
Meets CISPR-11 and CISPR-25 EMI standards
Safety-related certifications:
6000-V
PK
reinforced isolation per DIN VDE V 0884-11
4250-V
RMS
isolation for 1 minute per UL1577
2
Applications
Shunt-resistor-based current sensing in:
HEV/EV charging piles
HEV/EV on-board chargers (OBC)
HEV/EV DC/DC converters
HEV/EV traction inverters