SBOS925E
December 2020 – October 2024
OPA2391
,
OPA391
,
OPA4391
PRODMIX
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: OPA391
5.5
Thermal Information: OPA2391
5.6
Thermal Information: OPA4391
5.7
Electrical Characteristics: OPA391DCK and OPA2391YBJ
5.8
Electrical Characteristics: OPA2391DGK and OPA4391PW
5.9
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
Low Input Bias Current
6.3.2
Input Differential Voltage
6.3.3
Capacitive Load Drive
6.3.4
EMI Rejection
6.4
Device Functional Modes
7
Application and Implementation
7.1
Application Information
7.2
Typical Applications
7.2.1
Three-Terminal CO Gas Sensor
7.2.1.1
Design Requirements
7.2.1.2
Detailed Design Procedure
7.2.1.3
Application Curve
7.2.2
4-mA to 20-mA Loop Design
7.2.2.1
Application Curve
7.3
Power Supply Recommendations
7.4
Layout
7.4.1
Layout Guidelines
7.4.2
Layout Example
8
Device and Documentation Support
8.1
Device Support
8.1.1
Development Support
8.1.1.1
PSpice® for TI
8.1.1.2
TINA-TI™ Simulation Software (Free Download)
8.2
Documentation Support
8.2.1
Related Documentation
8.3
Receiving Notification of Documentation Updates
8.4
Support Resources
8.5
Trademarks
8.6
Electrostatic Discharge Caution
8.7
Glossary
9
Revision History
10
Mechanical, Packaging, and Orderable Information
1
Features
Low I
Q
: 24µA
Gain bandwidth product: 1MHz
Low input bias current: 10fA
Low offset voltage: ±45µV (maximum)
Low drift: ±1.2µV/°C
Low supply voltage operation: 1.7V to 5.5V
Input common mode range ±100mV beyond rail
Fast slew rate: 1V/µs
High load capacitance drive
High output current drive: 60mA
Rail-to-rail output
EMI and RFI filtered inputs
Small package options: SC-70, DSBGA