INA281B3IDBVR Texas Instruments Integrated Circuit (SOT23 (5-Pin)) In Stock
The INA281B3IDBVR is a high-voltage, wide-bandwidth current sense amplifier from Texas Instruments supporting -4V to 100V common-mode input range and 1 MHz bandwidth, in a 5-pin SOT-23 package. It features 120 dB minimum CMRR and transconductance architecture for accurate current measurement across high-voltage shunt resistors. Ideal for motor drives, battery management systems, and industrial power monitoring requiring precision over-current detection.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- INA281B3IDBVR Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Wide -4V to 100V common-mode input range for high-voltage current sensing applications
- 1 MHz bandwidth enabling fast, accurate current monitoring in dynamic power systems
- 120 dB minimum (140 dB typical) CMRR for outstanding noise rejection
- Transconductance amplifier architecture for low-power, high-accuracy current measurement
- 5-pin SOT-23 package for ultra-compact PCB footprint in space-constrained designs
- Operating temperature range -40 to 125°C for industrial and automotive environments
Applications
The INA281B3IDBVR is used in battery management systems, electric motor drives, solar inverters, and industrial power supplies where accurate high-side or low-side current sensing over wide common-mode voltage ranges is critical. Its combination of high bandwidth and excellent CMRR makes it ideal for over-current protection, power monitoring, and closed-loop current control in demanding industrial and automotive applications.
Specifications
| Pbfree Code | Yes |
| Date Of Intro | 2020-08-31 |
| YTEOL | 15 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | TRANSCONDUCTANCE |
| Average Bias Current-Max (IIB) | 30 µA |
| Bias Current-Max (IIB) @25C | 30 µA |
| Common Mode Voltage-Max | 110V |
| Common-mode Reject Ratio-Min | 120dB |
| Common-mode Reject Ratio-Nom | 140dB |
| Frequency Compensation | NO |
| Input Offset Voltage-Max | 250 µV |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e4 |
| Low-Bias | NO |
| Low-Offset | NO |
| Micropower | NO |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Slew Rate-Nom | 2.5V/us |
| Supply Current-Max | 2.25mA |
| Supply Voltage Limit-Max | 22V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Unity Gain BW-Nom | 1000 |
| Voltage Gain-Nom | 100 |
| Wideband | NO |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for INA281B3IDBVR:
Frequently Asked Questions
What common-mode voltage range does the INA281B3IDBVR support?
The INA281B3IDBVR supports a common-mode input voltage range of -4V to 100V, with a maximum common-mode voltage up to 110V, enabling reliable current sensing on high-voltage rails in industrial power systems, motor drives, and battery packs.
What is the bandwidth and CMRR of the INA281B3IDBVR?
The INA281B3IDBVR provides 1 MHz bandwidth with 120 dB minimum (140 dB typical) common-mode rejection ratio, ensuring fast and accurate current measurements with superior rejection of common-mode noise in high-voltage switching environments.
What package is the INA281B3IDBVR available in and what is its temperature range?
The INA281B3IDBVR is available in a compact 5-pin SOT-23 package, operating across an extended temperature range of -40°C to 125°C, making it suitable for industrial, automotive, and outdoor power monitoring applications.
Related Guides
TPS61291DRVR Selection Guide: Low-Quiescent-Current Boost Converters for IoT and Wearables
How to select the TPS61291DRVR and low-Iq boost converters for IoT, wearables, and coin-cell designs. Compares specs, packages, and alternatives from TI, ADI, and Microchip.
May 13, 2026
TMS5704357BZWTQQ1 Selection Guide: Choosing the Right TMS570 Automotive MCU Variant
Compare TMS570 automotive MCU variants by ASIL level, flash, package, and peripherals. Find the right fit from entry-level LQFP to the ASIL-D TMS5704357BZWTQQ1.
May 13, 2026
TI Hercules TMS5704357BZWTQQ1 Design Guide for Automotive ASIL-D and Industrial Functional Safety
Complete integration guide for the TI Hercules TMS5704357BZWTQQ1 dual-core lockstep Cortex-R5F MCU: lockstep CPU, ECC RAM, FlexRay/CAN-FD, and ASIL-D pitfalls.
May 12, 2026
PTN78000WAH Selection Guide: Choosing the Right 1.5 A 36 V Step-Down Power Module
Compare PTN78000WAH against PTN78000WAS, PTN78060WAH, and other 1.5A 36V step-down modules. Covers package, current rating, efficiency, and drop-in replaceability.
May 12, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
LM3911N
Dual-In-Line Packages
Integrated Circuit
CC430F5143IRGZT
Quad Flat No-Lead
Integrated Circuit
CD54HC00F
Ceramic Dual-In-Line Packages
Integrated Circuit
CD54HCT86F
Ceramic Dual-In-Line Packages
Integrated Circuit
CDCL1810RGZR
Quad Flat No-Lead
Integrated Circuit
CDC2351DBR
Small Outline Packages
Integrated Circuit
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”