SBOSA30D
March 2022 – December 2024
PRODUCTION DATA
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
1
Features
Enhanced PWM rejection optimized for systems subject to switching common-mode voltages
Supports switching frequencies up to 125kHz
Wide common-mode voltage:
Operational voltage: −5V to 110V
Survival voltage: −20V to 120V
Bidirectional operation
High small signal bandwidth: 1.1MHz (at all gains)
Slew rate: 8V/µs
Step response settling time to 1%: 1µs
Excellent CMRR
166dB DC-CMRR
104dB AC-CMRR at 100kHz
89dB AC-CMRR at 1MHz
Accuracy:
Gain error (maximum)
Version A: ±0.01%, ±1ppm/°C drift
Version B: ±0.1%, ±5ppm/°C drift
Offset voltage (maximum)
Version A: ±10µV, ±0.1µV/°C drift
Version B: ±150µV, ±0.5µV/°C drift
Available gains:
INA241A1, INA241B1 : 10V/V
INA241A2, INA241B2 : 20V/V
INA241A3, INA241B3 : 50V/V
INA241A4, INA241B4 : 100V/V
INA241A5, INA241B5 : 200V/V
Package options: SOT23-8, VSSOP-8, SOIC-8,