Images are for reference only
INA240A1DR
+BOM-
ManufacturerTexas Instruments
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Mfr. Part #INA240A1DR
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In Stock4343
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Specifications
| Attribute | Value |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| Amplifier Type | Current Sense |
| Number of Circuits | 1 |
| Slew Rate | 2V/µs |
| -3 dB Bandwidth | 400 kHz |
| Current - Input Bias | 90 µA |
| Voltage - Input Offset | 5 µV |
| Supply Current | 1.8mA |
| Voltage - Supply Span(Min) | 2.7 V |
| Voltage - Supply Span(Max) | 5.5 V |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
Overview
Description
Key specifications of the INA240A1DR include a high common-mode voltage range, typically from -4V to +80V, making it suitable for high-voltage environments. It offers a low offset voltage and a gain error of typically 0.1%, which ensures precise current measurement. The device operates with a supply voltage range from 2.7V to 5.5V and is available in a small, space-saving package.
The INA240A1DR also includes features such as enhanced PWM rejection, which makes it ideal for applications involving pulse-width modulation signals. It provides a fixed gain option, simplifying the design process and reducing the need for external components. Overall, the INA240A1DR is a versatile and reliable solution for accurate current sensing in demanding conditions.
Equivalent
Features
1. High Accuracy and Precision: Offers a low offset voltage and a high common-mode rejection ratio, ensuring precise current measurements.
2. Wide Common-Mode Range: Operates over a common-mode voltage range of –4 V to +80 V, suitable for a variety of applications.
3. Bidirectional Current Sensing: Capable of measuring current in both directions, which is useful for systems that require monitoring of charging and discharging cycles.
4. Enhanced PWM Rejection: Features enhanced pulse-width modulation (PWM) rejection, making it ideal for motor control and other high-frequency applications.
5. Low Offset Drift: Maintains accuracy across temperature variations due to its low offset drift characteristic.
6. Gain Options: Available in multiple gain variants, with the INA240A1 offering a gain of 20 V/V.
7. Package and Temperature Range: Comes in an 8-pin SOIC package and supports an operating temperature range of –40°C to +125°C.
These features make the INA240A1DR suitable for high-side current sensing in industrial, automotive, and power management applications.
Pinout
Here is a concise description of the pin functions:
1. IN+ (Pin 1): Non-inverting input. Connects to the high side of the shunt resistor.
2. IN- (Pin 2): Inverting input. Connects to the low side of the shunt resistor.
3. REF1 (Pin 3): Reference voltage input. Along with REF2, it allows for the adjustment of the output voltage.
4. REF2 (Pin 4): Second reference voltage input. Used in conjunction with REF1.
5. GND (Pin 5): Ground. Connects to the system ground.
6. OUT (Pin 6): Output. Provides the amplified current sense voltage.
7. VS (Pin 7): Power supply voltage. Typically connected to a 2.7V to 5.5V power supply.
8. NC (Pin 8): No connection. It is generally recommended to leave this pin unconnected.
The INA240A1DR provides accurate current sensing with enhanced PWM rejection capabilities, making it ideal for use in motor control and power conversion applications.
Manufacturer
Application
1. Motor Control: Used in motor drives and controllers for precise current monitoring.
2. Power Management: Assists in battery management systems by providing accurate current measurements.
3. Automotive Systems: Suitable for electric and hybrid vehicle systems, ensuring efficient power usage.
4. Industrial Automation: Helps in monitoring power consumption in industrial machinery.
5. Renewable Energy Systems: Used in solar inverters and other renewable energy applications for tracking power output.
Its wide common-mode voltage range and high accuracy make it versatile for these applications.