ATA8743-PXQW Overview
The ATA8743-PXQW is a precision analog front-end IC designed for automotive current sensing and power management applications. It integrates a high-accuracy, low-offset current measurement system with a robust output stage, ensuring reliable performance in harsh environments. Featuring a wide operating voltage range and excellent linearity, this device supports efficient energy monitoring and control. Its compact package and low power consumption make it ideal for integration in automotive systems requiring precise current feedback. For detailed technical data and sourcing, visit IC Manufacturer.
ATA8743-PXQW Technical Specifications
| Parameter | Specification |
|---|---|
| Supply Voltage Range | 4.5 V to 36 V |
| Operating Temperature Range | -40 ??C to +125 ??C |
| Output Voltage Range | 0.1 V to 4.9 V |
| Current Sense Input Range | ??50 A (max) |
| Typical Output Sensitivity | 40 mV/A |
| Gain Error | ??1 % (max) |
| Offset Voltage | ??2 mV (max) |
| Package Type | QFN-16 (4×4 mm) |
| Quiescent Current | 3.5 mA (typical) |
ATA8743-PXQW Key Features
- High-Precision Current Sensing: The integrated current sensing front-end provides accurate measurement with low offset and temperature drift, enabling precise monitoring of load currents in automotive systems.
- Wide Supply Voltage Range: Operational from 4.5 V up to 36 V, it supports both 12 V and 24 V automotive power rails, increasing flexibility across multiple vehicle platforms.
- Robust Output Stage: The linear analog output voltage, ranging from 0.1 V to 4.9 V, ensures compatibility with microcontrollers and ADCs for seamless integration into vehicle control units.
- Compact and Thermally Efficient Package: The 4×4 mm QFN package offers a small form factor with excellent thermal dissipation, supporting high-reliability operation in constrained spaces.
ATA8743-PXQW Advantages vs Typical Alternatives
This device offers superior accuracy and a wider voltage operating range compared to typical current sensing ICs, enhancing system sensitivity and reliability. Its low offset voltage and stable gain reduce calibration needs, improving efficiency in automotive power management. The compact package combined with low quiescent current makes it ideal for embedded applications where space and power efficiency are critical.
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Typical Applications
- Automotive battery management systems requiring precise current monitoring to optimize charging and discharging cycles, enhancing battery life and safety.
- Electric power steering control modules where accurate current feedback improves motor control and system responsiveness.
- In-vehicle energy metering for fuel cell or hybrid electric vehicles, supporting efficient energy consumption tracking.
- Overcurrent protection circuits in automotive electronic control units (ECUs), ensuring system protection and fault detection with reliable sensing.
ATA8743-PXQW Brand Info
Manufactured by a leading semiconductor supplier specializing in automotive-grade analog ICs, this product exemplifies the brand??s commitment to precision, robustness, and integration in vehicle electronics. The device is part of a comprehensive portfolio targeting current sensing and power management challenges in modern automotive and industrial environments.
FAQ
What is the typical operating voltage range of this current sensing IC?
The device supports a wide supply voltage range from 4.5 V to 36 V, making it compatible with both 12 V and 24 V automotive systems. This range ensures flexibility for various vehicle architectures without compromising measurement accuracy.
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How does the device ensure accuracy over temperature variations?
By maintaining a low offset voltage of ??2 mV maximum and minimizing gain error to ??1%, the IC delivers stable and precise current measurements across a broad temperature range from -40 ??C to +125 ??C, critical for automotive reliability.
What is the output signal type and how does it interface with microcontrollers?
The output is an analog voltage ranging approximately between 0.1 V and 4.9 V, linearly proportional to the sensed current. This voltage output can be directly connected to an ADC input on a microcontroller, enabling straightforward current monitoring and control.
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What package type is used and how does it benefit thermal management?
The compact 16-pin QFN package (4×4 mm) provides excellent thermal conductivity and space efficiency. This helps dissipate heat effectively in high-current applications, improving device reliability in automotive environments.
Is this device suitable for measuring bidirectional currents?
Yes, the current sense input range supports ??50 A, allowing it to measure both positive and negative currents. This capability is essential for applications such as battery charge/discharge monitoring and regenerative braking systems.
