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Name: DRV425RTJR
Brand: Texas Instruments
SKU: DRV425RTJR
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 DRV425RTJR

Part No.:: DRV425RTJR

Manufacturer:: Texas Instruments

Package:: 20-QFN (4x4)

Datasheet:: DRV425RTJR.pdf

Description:: SENSOR FLUXGATE ANALOG 20QFN

In Stock:: 2689

Quantity:: Add To Cart

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DRV425RTJR Typical application Circuitry

DRV425RTJR

The DRV425RTJR is a precision fluxgate magnetic sensor developed by Texas Instruments, designed to accurately measure magnetic fields. This integrated circuit is particularly suitable for applications requiring precise detection and measurement of magnetic fields, such as current sensing, position sensing, and compassing in various industrial and automotive environments.

Key Features and Parameters:

- Precision Measurement: The DRV425RTJR provides high-accuracy magnetic field detection, crucial for applications requiring detailed magnetic field analysis.

- Low Offset and Low Noise: Ensures clean, reliable readings, minimizing the potential for error in measurement.

- Integrated Temperature Sensor: Offers built-in temperature compensation, maintaining accuracy across a wide range of operating conditions.

- Small Form Factor: Packaged in a small footprint, making it ideal for space-constrained applications.

- Robust Design: Engineered to perform reliably in harsh environmental conditions, suitable for both automotive and industrial applications.

Application Scenario: Utilizing the DRV425RTJR in an electric vehicle (EV) for precise current sensing to monitor battery charge and discharge cycles, contributing to efficient battery management and extended vehicle range.

Circuit Design:

Integrating the DRV425RTJR into an EV battery management system involves careful consideration of the following pin connections and circuit configuration:

1. Power Supply Connection (VDD to Pin 8, GND to Pin 4): Connect a stable power supply, typically 3.3V or 5V, to VDD, ensuring the DRV425RTJR has the necessary power for operation. Ground should be connected to the system's ground plane. Stable power input is essential for accurate magnetic field measurements.

2. Magnetic Field Output (VOUT to Pin 6): Route the VOUT pin to an analog-to-digital converter (ADC) input on the battery management system's microcontroller. This connection is crucial for converting the analog magnetic field measurements into digital data that the system can process.

3. Set/Reset Control (SET/RESET to Pins 1 and 5): Connect these pins to digital outputs on the microcontroller. Periodic toggling of the SET/RESET pins is necessary for calibrating the sensor, ensuring consistent measurement accuracy.

4. Temperature Monitoring (TEMP to Pin 7): For applications requiring temperature compensation, connect the TEMP pin to another ADC channel on the microcontroller. This allows for monitoring the sensor's temperature, adjusting measurements for temperature effects.

5. Filtering and Decoupling (Near VDD and VOUT Pins): Place decoupling capacitors close to the power supply pin and filtering components near the VOUT pin to reduce noise. Noise reduction is critical for maintaining the integrity of the magnetic field measurements.

Design Considerations:

- EMI/RFI Considerations: Implement EMI/RFI shielding and filtering techniques to protect the DRV425RTJR from electromagnetic and radio frequency interference, which can affect measurement accuracy.

- Signal Integrity: Pay careful attention to the routing of the VOUT and SET/RESET signals, using short, direct paths to minimize signal degradation.

- Thermal Management: Although the DRV425RTJR includes temperature compensation, maintaining a stable operating temperature through proper circuit design can enhance overall measurement accuracy.

- Calibration Procedure: Develop a firmware routine for the microcontroller to periodically calibrate the DRV425RTJR using the SET/RESET functionality, ensuring long-term stability and accuracy of the measurements.

- Power Supply Stability: Ensure that the power supply to the DRV425RTJR is clean and stable, using appropriate decoupling capacitors and considering the use of a low-dropout regulator (LDO) if necessary to filter supply voltage fluctuations.

By incorporating the DRV425RTJR into an EV battery management system, designers can leverage its precision magnetic field sensing capabilities for accurate current measurement, enhancing battery efficiency and contributing to the overall performance and reliability of the vehicle. This application highlights the DRV425RTJR's suitability for critical automotive systems, where accurate and reliable sensor data are paramount.

DRV425RTJR information

DRV425RTJR Specifications

Packaging:
Tape & Reel (TR)
Series:
-
ProductStatus:
Active
Technology:
Fluxgate
Axis:
Single
OutputType:
Analog Voltage
SensingRange:
±2.0mT
Voltage-Supply:
3V ~ 5.5V
Current-Supply(Max):
10mA
Current-Output(Max):
20mA
Resolution:
-
Bandwidth:
47kHz, 32kHz
OperatingTemperature:
-50°C ~ 150°C (TA)
Features:
Selectable Scale
MountingType:
20-QFN (4x4)

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3. Are the DRV425RTJR price and inventory displayed accurate?

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6. What is the process for return or replacement of DRV425RTJR?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the DRV425RTJR we delivered, we will accept the replacement or return of the DRV425RTJR only when all of the below conditions are fulfilled:

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

(2)We are informed of the defect described above within 90 days after the delivery of DRV425RTJR.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations