SBOSAD1A
May 2024 – July 2025
INA791A
,
INA791B
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics
5.6
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
Integrated Shunt Resistor
6.3.2
Safe Operating Area
6.3.3
Short-Circuit Duration
6.3.4
Temperature Drift Correction
6.4
Device Functional Modes
6.4.1
Adjusting the Output With the Reference Pin
6.4.1.1
Reference Pin Connections for Unidirectional Current Measurements
6.4.1.2
Ground Referenced Output
6.4.1.3
Reference Pin Connections for Bidirectional Current Measurements
6.4.1.4
Output Set to Mid-Supply Voltage
6.4.2
Adjustable Gain Set Using External Resistors
6.4.2.1
Adjustable Unity Gain
6.4.3
Thermal Alert Function
7
Application and Implementation
7.1
Application Information
7.1.1
Calculating Total Error
7.1.1.1
Error Sources
7.1.1.2
Reference Voltage Rejection Ratio Error
7.1.1.3
External Adjustable Gain Error
7.1.1.4
Total Error Example 1
7.1.1.5
Total Error Example 2
7.1.1.6
Total Error Example 3
7.1.1.7
Total Error Curves
7.1.2
Signal Filtering
7.2
Typical Applications
7.2.1
High-Side, High-Drive, Solenoid Current-Sense Application
7.2.1.1
Design Requirements
7.2.1.2
Detailed Design Procedure
7.2.1.3
Application Curve
7.3
Power Supply Recommendations
7.4
Layout Example
7.5
Layout Guidelines
8
Device and Documentation Support
8.1
Documentation Support
8.1.1
Related Documentation
8.2
Receiving Notification of Documentation Updates
8.3
Support Resources
8.4
Trademarks
8.5
Electrostatic Discharge Caution
8.6
Glossary
9
Revision History
10
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
DEK|15
MPQF687A
Thermal pad, mechanical data (Package|Pins)
DEK|15
QFND719A
Orderable Information
sbosad1a_oa
sbosad1a_pm
Data Sheet
INA791x
–4V to 110V, Bidirectional, Ultra-Precise,
High Bandwidth
Current Sense Amplifier With 75A
EZShunt
Technology