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
- Price
- From $1.1900(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of INA281B3IDBVR?
- 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
What is INA281B3IDBVR used for?
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.
What are the specifications of INA281B3IDBVR?
| 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 |
Where can I find the INA281B3IDBVR datasheet?
INA281B3IDBVR Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for INA281B3IDBVR?
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.
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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
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.1500 | $2.15 |
| 10+ | $1.8800 | $18.80 |
| 100+ | $1.3236 | $132.36 |
| 250+ | $1.2485 | $312.13 |
| 500+ | $1.2087 | $604.35 |
| 1000+ | $1.1900 | $1190.00 |
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