INA241A1 (SOT-23 TYPE) Texas Instruments Integrated Circuit (SOT23 (8-Pin)) In Stock
Texas Instruments INA241A1 is a current-sense amplifier in SOT-23 package with a wide common-mode voltage range of −4 V to +110 V. It features a fixed gain of 20 V/V and operates from a 2.7 V to 5.5 V supply, delivering accurate bidirectional current measurements. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (8-Pin)
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- INA241A1 (SOT-23 TYPE) Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Wide common-mode voltage range of −4 V to +110 V enables high-side current sensing in harsh industrial environments
- Fixed gain of 20 V/V with ±0.1% gain accuracy reduces external components and simplifies calibration
- Ultra-small SOT-23 package with 8 pins enables compact PCB layouts for space-constrained designs
- Bidirectional current sensing supports both source and sink measurement in a 2.7 V to 5.5 V supply range
Applications
The INA241A1 is ideal for motor drive current feedback loops where the bus voltage can swing up to 110 V, such as in industrial servo drives and brushless DC motor controllers. Its accurate 20 V/V fixed gain makes it well-suited for battery management systems and power-supply current monitoring applications requiring tight measurement tolerances. The compact SOT-23 form factor fits naturally into space-constrained designs like wearable power monitors and point-of-load regulators.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What common-mode voltage range does the INA241A1 support for high-side current sensing?
The INA241A1 supports a common-mode input voltage range of −4 V to +110 V, making it suitable for high-side current sensing on 12 V, 24 V, 48 V, and up to 100 V bus rails found in industrial motor drives and power systems.
Which supply voltage and gain setting does the INA241A1 use in a 48 V motor drive design?
The INA241A1 operates from a single supply of 2.7 V to 5.5 V and provides a fixed gain of 20 V/V, allowing it to produce a full-scale output on a 3.3 V logic rail while monitoring a 48 V motor phase current through a milliohm shunt resistor.
How does the INA241A1 SOT-23 package size compare to larger current-sense amplifier packages for compact PCB layouts?
The INA241A1 comes in an 8-pin SOT-23 package measuring approximately 3 mm × 3 mm footprint, which is significantly smaller than standard SOIC-8 packages (about 6 mm × 5 mm), freeing roughly 20 mm² of board space per amplifier in multi-channel designs.
Can the INA241A1 measure bidirectional current, and what output behavior is expected at zero current?
Yes, the INA241A1 supports bidirectional current measurement. At zero differential input, the output sits at a mid-supply reference level, and the output swings symmetrically for positive and negative currents, enabling accurate measurement of regenerative braking currents in motor control systems rated up to 10 A.
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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.
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