What is the Additional Feature ?

Name: INA169NA/3K
Brand: Texas Instruments
SKU: INA169NA/3K
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Texas Instruments INA169NA/3K

Part No.:: INA169NA/3K

Manufacturer:: Texas Instruments

Package:: SC-74A, SOT-753

Datasheet:: INA169NA/3K.pdf

Description:: IC CURRENT MONITOR 0.5% SOT23-5

In Stock:: 2296

Quantity:: Add To Cart

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INA169NA/3K this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including INA169NA/3K price, data-sheet, in-stock availability, technical difficulties. Also. Quickly Enter the access of compare listing to find out replaceable electronic parts. If you want to retrieve comprehensive data for INA169NA/3K to optimize the supply chain (including cross references, life-cycle, parametric, counterfeit risk, obsolescence managements forecasts), please contact to our Tech-supports team.

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INA169NA/3K Typical application Circuitry

INA169NA 3K

INA169NA/3K is a high-side current shunt monitor, a specialized integrated circuit that allows for precise current measurement across a shunt resistor placed in the high side of a circuit, i.e., between the power supply and the load. This positioning allows for the monitoring of load current without interfering with the ground path of the load, making it ideal for a wide range of applications.

Application Scenarios

INA169NA/3K is commonly used in applications requiring current monitoring, such as battery chargers, power management systems, portable devices, and automotive systems, where understanding the current flow is crucial for performance and safety.

Parameter Features

- High-Side Measurement: Enables current measurement in the supply line, facilitating easier isolation and safety.

- Broad Voltage Range: It is adaptable to a variety of applications due to its compatibility with a wide range of supply voltages.

- Analog Output: Simplifies integration with analog-to-digital converters (ADCs) or microcontrollers by providing a voltage output proportionate to the measured current.

Circuit Connection in a Specific Application Scenario

For a battery charging system, the INA169NA/3K can be used to monitor the charging current. Here's a detailed connection guide:

- Power Supply Connection: Connect the V+ pin (pin 8) of the INA169NA/3K to the positive terminal of the power supply. This establishes the operational voltage for the IC.

- Shunt Resistor Connection: Place a precision shunt resistor between the positive terminal of the battery (which is being charged) and the Rs+ pin (pin 7) of the INA169NA/3K. The load (in this case, the battery) is connected to the other end of the shunt resistor.

- Grounding: Connect the GND pin (pin 5) of the INA169NA/3K to the system ground. This common reference point is crucial for accurate current measurement.

- Output to Measurement Circuit: The Vout pin (pin 6) provides an analog voltage output proportional to the current flowing through the shunt resistor. This output should be connected to an ADC input of a microcontroller for digital processing or directly to an analog gauge for visual monitoring.

- Refining the Output: To set the gain and adjust the output range for specific requirements, connect a resistor between the Ref pin (pin 4) and the GND. This resistor sets the scaling factor for the output voltage, allowing customization for different ADC ranges or monitoring needs.

Design Considerations

When designing circuits with the INA169NA/3K, several factors should be taken into account:

- Shunt Resistor Selection: The value of the shunt resistor determines the sensitivity and range of current measurement. It must be chosen based on the maximum expected current and the desired resolution, balancing accuracy with power dissipation.

- Thermal Management: The power dissipated by the shunt resistor can lead to heating, affecting accuracy. Proper thermal management and resistor selection are essential to maintain performance.

- Voltage Drop: The voltage drop across the shunt resistor should be minimal to avoid affecting the load operation, especially in low-voltage applications.

- Noise Considerations: High-side current monitoring is susceptible to noise, particularly in automotive or industrial environments. Filtering and proper layout techniques can help mitigate noise impact on the measurement accuracy.

Integrating the INA169NA/3K into a battery charging system involves careful attention to the choice of shunt resistor, the thermal and noise environment, and the calibration of the output signal to match the monitoring or control requirements. This precise approach ensures reliable and accurate current monitoring, enhancing the safety and efficiency of the charging process.

INA169NA/3K information

INA169NA/3K Specifications

Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®,Bulk
Series:
-
ProductStatus:
Active
Function:
Current Monitor
SensingMethod:
High-Side
Accuracy:
±0.5%
Voltage-Input:
2.7V ~ 60V
Current-Output:
-
OperatingTemperature:
-40°C ~ 85°C (TA)
MountingType:
Surface Mount

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(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

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