Datasheet OPA4388 (Texas Instruments) - 8

OPA388, OP A2388, OP A4388
SBOS777D – NOVEMBER 2016 – REVISED JULY 2020
www.ti.com 6.7 Electrical Characteristics: VS = ±1.25 V to ±2.75 V (VS = 2.5 to 5.5 V) (continued)
at TA = 25°C, VCM = VOUT = VS / 2, and RLOAD = 10 kΩ connected to VS / 2 (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT INPUT BIAS CURRENT
±30 ±350 T R A = 0°C to +85°C ±400 IN = 100 kΩ, OPA388, OPA2388 TA = –40°C to ±700 +125°C IB Input bias current ±30 ±500 T R A = 0°C to +85°C ±600 IN = 100 kΩ, OPA4388 TA = –40°C to ±800 +125°C pA ±700 T R A = 0°C to +85°C ±800 IN = 100 kΩ, OPA388, OPA2388 TA = –40°C to ±800 +125°C IOS Input offset current ±1000 T R A = 0°C to +85°C ±1100 IN = 100 kΩ, OPA4388 TA = –40°C to ±1100 +125°C
NOISE
EN Input voltage noise f = 0.1 Hz to 10 Hz 0.14 µVPP f = 10 Hz 7 Input voltage noise f = 100 Hz 7 eN nV/√Hz density f = 1 kHz 7 f = 10 kHz 7 Input current noise IN f = 1 kHz 100 fA/√Hz density
INPUT VOLTAGE
Common-mode voltage VCM (V–) – 0.1 (V+) + 0.1 V range VS = ±1.25 V OPA388, 124 138 OPA2388 (V–) – 0.1 V < VCM < (V+) + 0.1 V VS = ±1.25 102 110 V OPA4388 VS = ±2.75 V 124 140 Common-mode CMRR dB rejection ratio VS = ±1.25 V OPA388, 114 134 (V–) < VCM < (V+) + 0.1 V, OPA2388 TA = –40°C to +125°C VS = ±1.25 102 107 V OPA4388 (V–) – 0.05 V < VCM < (V+) + 0.1 V, V T S = ±2.75 V 124 140 A = –40°C to +125°C
INPUT IMPEDANCE
Differential input zid 100 || 2 MΩ || pF impedance Common-mode input zic 60 || 4.5 TΩ || pF impedance 8 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: OPA388 OPA2388 OPA4388 Document Outline 1 Features 2 Applications 3 Description Table of Contents 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: OPA388 6.5 Thermal Information: OPA2388 6.6 Thermal Information: OPA4388 6.7 Electrical Characteristics: VS = ±1.25 V to ±2.75 V (VS = 2.5 to 5.5 V) 6.8 Typical Characteristics 7 Detailed Description 7.1 Overview 7.2 Functional Block Diagram 7.3 Feature Description 7.3.1 Operating Voltage 7.3.2 Input Voltage and Zero-Crossover Functionality 7.3.3 Input Differential Voltage 7.3.4 Internal Offset Correction 7.3.5 EMI Susceptibility and Input Filtering 7.4 Device Functional Modes 8 Application and Implementation 8.1 Application Information 8.2 Typical Applications 8.2.1 Bidirectional Current-Sensing 8.2.1.1 Design Requirements 8.2.1.2 Detailed Design Procedure 8.2.1.3 Application Curve 8.2.2 Single Operational Amplifier Bridge Amplifier 8.2.3 Precision, Low-Noise, DAC Buffer 8.2.4 Load Cell Measurement 9 Power Supply Recommendations 10 Layout 10.1 Layout Guidelines 10.2 Layout Example 11 Device and Documentation Support 11.1 Device Support 11.1.1 Development Support 11.1.1.1 TINA-TI™ Simulation Software (Free Download) 11.1.1.2 TI Precision Designs 11.2 Documentation Support 11.2.1 Related Documentation 11.3 Related Links 11.4 Receiving Notification of Documentation Updates 11.5 Support Resources 11.6 Trademarks 11.7 Electrostatic Discharge Caution 11.8 Glossary 12 Mechanical, Packaging, and Orderable Information