Product Description
The HAL490X is a linear Hall-effect sensor IC designed for a wide range of applications. It integrates a Hall sensor, a linear amplifier, and a Totem-Pole output stage, offering low-noise output that eliminates the need for external filtering. This sensor provides enhanced temperature stability and accuracy, with a broad operating temperature range of -40 to +125, making it suitable for commercial, consumer, and industrial environments. Its high sensitivity accurately tracks minute changes in magnetic flux density. The linear sourcing output voltage is proportional to the magnetic flux density and is set by the supply voltage. Key features include low typical operating current (1.8mA), a wide operating voltage range (2.8V to 6.0V), and an available trim version for ultra-low offset. The HAL490X is offered in two magnetically optimized package styles: SO (SOT-23) and UA (three-lead ultra-mini SIP).
Features and Benefits
- Operating Voltage Range: 2.8V~6.0V
- Power consumption of 1.8 mA at 5 VDC for energy efficiency
- Low-Noise Operation
- Linear output for circuit design flexibility
- Totem-Pole for a stable and accurate output
- Responds to either positive or negative gauss
- Magnetically Optimized Package for UA, SO
- Trim version is precise on offset
- Robust ESD performance
- RoHS compliant 2011/65/EU and Halogen Free
Applications
- Current sensing
- Motor control
- Position sensing
- Magnetic code reading
- Rotary encoder
- Ferrous metal detector
- Vibration sensing
- Liquid level sensing
- Weight sensing
Technical Specifications
| Parameter | Symbol | Test Conditions | Min | Max | Typ | Units |
|---|---|---|---|---|---|---|
| Absolute Maximum Ratings | ||||||
| Supply Voltage | VDD | -0.5 | 6.5 | V | ||
| Reverse Voltage | VDD | -0.5 | V | |||
| Output Voltage | Vout | VDD | V | |||
| Output Current | IOUT | 8 | mA | |||
| Storage temperature Range | TS | -65 | 150 | |||
| Maximum Junction Temp | TJ | 150 | ||||
| Thermal Resistance | RthJA | UA/SO | 206/543/543 | /W | ||
| Package Power Dissipation | PD | UA/SO | 148/410/410 | mW | ||
| DC Operating Parameters (TA=+25, VCC=5V) | ||||||
| Supply Voltage | VDD | 2.8 | 6.0 | V | ||
| Supply Current | IDD | B=0 Gauss | 1.8 | mA | ||
| Null Output Voltage | Vnull | B=0 Gauss | 2.375 | 2.625 | 2.5 | V |
| Output Voltage High | VOH | Operating B> Max Magnetic Gauss | 1.4 | V | ||
| Output Voltage Low | VOL | B> Min Magnetic Gauss | 0.1 | V | ||
| Output Voltage Span | VOS | 4.99 | V | |||
| Output Referred Noise | Vn | Ta=25, output open | 150 | V | ||
| Power-On Time | TP | 4 | s | |||
| Output Switch Time | TSW | 3 | s | |||
| Output Switch Frequency | FSW | 3 | KHz | |||
| Electrical Characteristics (TA=+25, VCC=3.3V) | ||||||
| Magnetic Range | Gauss | HAL4901 | 220 | Gs | ||
| Magnetic Range | Gauss | HAL4902 | 450 | Gs | ||
| Magnetic Range | Gauss | HAL4903 | 1.5 | Gs | ||
| Magnetic Range | Gauss | HAL4904 | 1.5 | Gs | ||
| Null output error | % of Span | Operating voltage range relative to 5V | 1.5 | % | ||
| Ratiometry Sensitivity error | % | HAL4901 | 1.5 | % | ||
| Ratiometry Sensitivity error | % | HAL4902 | 1.5 | % | ||
| Ratiometry Sensitivity error | % | HAL4903 | 1.5 | % | ||
| Ratiometry Sensitivity error | % | HAL4904 | 1.5 | % | ||
| Linearity | % of Span | 1.5 | % | |||
| Sensitivity | mV/G | HAL4901 | 13 | mV/G | ||
| Sensitivity | mV/G | HAL4902 | 17 | mV/G | ||
| Sensitivity | mV/G | HAL4903 | 7.5 | mV/G | ||
| Sensitivity | mV/G | HAL4904 | 8.5 | mV/G | ||
| Sensitivity Temperature Coeff | %/ | Ta=105, relative to Sens@25 | 0.1 | %/ | ||
2411271957_Hallwee-HAL4901SO_C7420986.pdf
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