SBOSAK3
July 2025
INA299-Q1
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
Amplifier Input Common-Mode Signal
6.3.2
Low Input Bias Current
6.3.3
Low VSENSE Operation
6.3.4
Wide Fixed Gain Output
6.3.5
Wide Supply Range
6.4
Device Functional Modes
6.4.1
Adjusting the Output With the Reference Pin
6.4.2
Reference Pin Connections for Unidirectional Current Measurements
6.4.2.1
Ground Referenced Output
6.4.2.2
VS Referenced Output
6.4.3
Reference Pin Connections for Bidirectional Current Measurements
6.4.3.1
Output Set to External Reference Voltage
6.4.3.2
Output Set to Mid-Supply Voltage
7
Application and Implementation
7.1
Application Information
7.1.1
RSENSE and Device Gain Selection
7.2
Typical Application
7.2.1
High-side Current Sensing in Motor 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
7.3.1
Power Supply Decoupling
7.4
Layout
7.4.1
Layout Guidelines
7.4.2
Layout Examples
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
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
Wide common-mode voltage:
Operational voltage: −2V to +80V
Survival voltage: −12V to +85V
Bidirectional operation
High small signal bandwidth: 650kHz (20V/V Gain)
Slew rate: 2.5V/µs
Step response settling time to 1%: 6.5µs
High CMRR: 120dB
Gain error (maximum) : ±0.25%, ±10ppm/°C drift
Offset voltage (maximum): ±150µV, ±0.5µV/°C drift
Operates from 2.7V to 12V supply
Operational current: 650μA
Available gains:
INA299A1-Q1: 20V/V
INA299A2-Q1: 50V/V
INA299A3-Q1: 100V/V
Package options: SOT23-6 (DBV)