company blog about Drone Propeller Control and Cordless Power Tools: INA241A2IDDFR—A Bidirectional, Ultra-Precision Current Sense Amplifier for -5V to 110V

Mingjiada Electronics Offers INA241A2IDDFR in Stock: A Bidirectional Ultra-Precision Current Sense Amplifier for -5V to 110V

INA241A2IDDFR Product Overview

The INA241A2IDDFR is an ultra-precision bidirectional current sense amplifier from Texas Instruments (TI) capable of accurately measuring the voltage drop across a shunt resistor over a wide common-mode voltage range of -5V to 110V, with measurement results independent of the supply voltage. This device is specifically designed for high-voltage, bidirectional measurement in switching systems and is particularly suitable for PWM control applications where significant common-mode voltage transients occur.

As a Shenzhen stock supplier, Mingjiada Electronics maintains a long-term inventory of genuine INA241A2IDDFR devices in SOT-23-8 packages. All units are from the latest production batches, and delivery times are consistent. Please feel free to contact us for inquiries and orders.

Key Features

Enhanced PWM Suppression Capability

The INA241A2IDDFR incorporates an enhanced PWM suppression circuit specifically optimized for systems affected by switching common-mode voltages. It supports switching frequencies up to 125 kHz and effectively suppresses interference from PWM switching noise on current sensing accuracy.

Ultra-Wide Common-Mode Voltage Range

Operating common-mode voltage: -5V to +110V

Common-Mode Voltage Tolerance: -20 V to +120 V

Differential Voltage Range: ±30 V

The wide common-mode range allows it to be used for both high-side and low-side current sensing, offering great flexibility in applications.

Bidirectional Current Sensing

Supports bidirectional current measurement, making it suitable for applications such as motor drives and battery charge/discharge management that require monitoring of current in both forward and reverse directions.

High Accuracy and Low Drift

Input offset voltage (Vos): 3 µV (typical)

Temperature drift of input offset voltage: 150 nV/°C

Gain: 20 V/V

Common-Mode Rejection Ratio (CMRR): 166 dB

The high common-mode rejection ratio and extremely low offset voltage ensure accurate measurement of minute currents even in high-voltage common-mode environments.

High-Speed Response

Small-signal bandwidth: 1.1 MHz (across the full gain range)

Slew rate: 8 V/µs

1% step response settling time: 1 µs

Power Supply and Power Consumption

Single-supply voltage range: 2.7 V to 20 V

Quiescent current (Iq): 2.5 mA (typical)

Operating temperature range: -40°C to +125°C

Specifications (Summary)

Part Number: INA241A2IDDFR

Brand: TI (Texas Instruments)

Package: SOT-23-8 (TSOT-23-8)

Number of Channels: Single

Common-Mode Voltage Range: -5 V to 110 V

Gain: 20 V/V

Bandwidth: 1.1 MHz

Input bias current (Ib): 35 µA

Input offset voltage (Vos): 3 µV

Input offset voltage temperature drift: 150 nV/°C

Common-mode rejection ratio (CMRR): 166 dB

Slew rate (SR): 8 V/µs

Noise density: 49 nV/√Hz @ 1 kHz

Quiescent Current (Iq): 2.5 mA

Operating Temperature: -40°C to +125°C

Differential Voltage: ±30 V

Single-Supply Voltage: 2.7 V to 20 V

Typical Applications

Thanks to its high accuracy, wide common-mode range, and enhanced PWM rejection capability, the INA241A2IDDFR is widely used in the following areas:

Motor Drive and Control: Phase current sensing in servo motors, stepper motors, and brushless DC (BLDC) motor drives

Solenoids and Actuators: Current monitoring and control of solenoid valves

Injection Molding Machines: Current feedback in high-precision industrial equipment

Cordless Power Tools: Lithium-ion battery charge/discharge management and motor protection

Medical Charging Equipment: Precision current monitoring with safety isolation

Drone Propeller Speed Control: Real-time current feedback under PWM speed control

Power Management: Current detection in DC-DC converters and point-of-load (POL) power supplies

Why Choose Mingjiada Electronics?

Shenzhen Mingjiada Electronics Co., Ltd. was established in 2004 and has been deeply involved in the electronic component distribution sector for many years. Headquartered in the Huaqiangbei Electronics Commercial Center in Futian District, Shenzhen, the company boasts stable supply channels and a professional service team.

Shenzhen Stock Availability: We maintain a long-term inventory of genuine INA241A2IDDFR units in stock, supporting rapid delivery

Genuine Manufacturer Guarantee: All products are genuine TI components, from the latest production batches, and of reliable quality

Flexible Supply: We support both small-batch samples and large-volume purchases

Conclusion

The INA241A2IDDFR is a high-performance current sensing solution introduced by TI for high-voltage PWM applications, combining ultra-high precision, a wide common-mode range, and excellent PWM rejection. Whether for motor drives, power management, or industrial automation, this device provides stable and accurate current feedback signals.

As a local Shenzhen stock supplier, Mingjiada Electronics warmly welcomes new and existing customers to call us for inquiries, request samples, or place orders.