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IC CURR SENSE 1 CIRCUIT 16TSSOP
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FabricantTexas Instruments
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Pièce fabricant #INA250A1PWR
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Package TSSOP-16
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En stock6849
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Spécifications
| Attribut | Valeur |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| Amplifier Type | Current Sense |
| Number of Circuits | 1 |
| Slew Rate | 0.2V/µs |
| Gain Bandwidth Product | 50 kHz |
| Current - Input Bias | 28 µA |
| Supply Current | 200µA |
| Voltage - Supply Span(Min) | 2.7 V |
| Voltage - Supply Span(Max) | 36 V |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
Présentation
Description
The INA250A1PWR offers an analog output that is proportional to the current passing through the shunt resistor, with a gain of 200 mV/A, enhancing measurement accuracy. It is part of the INA250 series, which provides different gain options to suit specific system needs. With a wide temperature range from -40°C to +125°C, it is suitable for industrial and automotive environments.
The device is housed in a TSSOP-16 package, which is compact and easy to integrate into circuit designs. Its integration of a shunt resistor simplifies design, reduces board space, and improves reliability by minimizing the number of external components necessary for current sensing applications.
Equivalent
1. INA250A2PWR - Similar device with a different gain setting.
2. INA253 - Offers similar functionality with higher voltage ranges.
3. INA190 - A potential alternative with lower power consumption.
4. MAX44284 - High-precision, high-side current sense amplifier from Maxim Integrated.
These alternatives vary in specifications like gain, accuracy, and available features, so selection depends on specific application requirements.
Features
1. Integrated Shunt Resistor: The device includes a 2 mΩ precision shunt resistor, enabling accurate current measurement with minimal board space.
2. Wide Common-Mode Voltage Range: It operates over a wide common-mode voltage range from 0V to 36V, making it suitable for high-side and low-side current sensing in multiple applications.
3. High Accuracy and Stability: The INA250A1PWR provides high accuracy with low offset voltage, low drift, and a precision gain of 200 mV/A.
4. Bi-directional Current Sensing: This feature allows for measuring current in both directions, which is beneficial for applications involving charging and discharging processes.
5. Temperature Range: It operates across a wide temperature range from -40°C to 125°C, suitable for industrial environments.
6. Low Quiescent Current: It consumes low quiescent current, enhancing efficiency in battery-powered applications.
These features make the INA250A1PWR ideal for power management, battery management, and other applications requiring precise current measurement.
Pinout
The device comes in a 16-pin TSSOP (Thin Shrink Small Outline Package). The pin configuration and functions are as follows:
1. Pins 1, 16 (IN+): Positive input connection for the current sensing resistor.
2. Pins 2, 15 (IN-): Negative input connection for the current sensing resistor.
3. Pins 3, 14 (V- or GND): Ground pins, connected to the negative supply.
4. Pin 4 (REF1): Reference input pin, can be used to set the zero current output voltage.
5. Pin 5 (REF2): Reference input pin, used in conjunction with REF1 for setting reference voltage.
6. Pin 6 (OUT): Output pin that provides the amplified and conditioned voltage representing the sensed current.
7. Pin 7 (V+ or VS): Positive supply voltage input.
8. Pins 8-13 (NC): No connection, often used for mechanical stability.
This design simplifies current measurement by providing a highly integrated solution, reducing the need for external components.
Manufacturer
Application
1. Power Supplies: Monitoring and protection in DC-DC converters and switching power supplies.
2. Battery Management: Managing charge and discharge cycles in battery-powered systems.
3. Motor Control: Ensuring accurate current measurement in motor drives and motor control applications.
4. Industrial Automation: Used in process control and automated systems for current monitoring.
5. Telecommunications: Power management in networking equipment and telecommunications infrastructure.
6. Consumer Electronics: Enhancements in smart appliances and portable devices for energy efficiency.
These applications benefit from the INA250A1PWR's ability to provide high accuracy and integration with other electronic systems.