Si721x Hall Effect Magnetic Sensor
The Si721x Linear output magnetic sensors bring class leading linearity and noise
performance, while maintaining pin compatibility with many existing sensors.
This allows you to reduce the size of your magnetics and improve performance
with your existing design.
AN1018: Using the Si72xx Hall Effect Sensors
Electrical, mechanical, and magnetic considerations surrounding the use of Si72xx devices.
Features
- Ultra low power: 100nA sleep power for parts with disable feature
- Analog, PWM, and SENT outputs available
- High Linearity: 0.15%
- Low noise: < 30 µT RMS
- 1.71 V - 5.5 V and 3.3 V - 26.5 V supply range
- Available in 0 to 70 °C and -40 to125 °C variants
- Available in industry standard SOT23 and TO92 packages
Si721x Product Matrix
Devices
| Part Number | Data Sheet | Dev Kit | Description | Output Type | Output Configuration | idd (typ) (µA) | Full Scale Field Strength (mT) | Sample Rate (Hz) | Temp Compensation | Averaging | Temperature Range (°C) | BIST | Disable Pin | Package Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Si72xx-EVAL-KIT | Linear Output Magnetic Sensor | Analog | Increasing Voltage | 5500 | 20 | 7000 | No | 16 | -40 125 | No | No | TO92 | |
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Si72xx-EVAL-KIT | Linear output Hall effect magnetic sensor with analog output | Analog | Increasing Voltage | 5500 | 20 | 7000 | No | 16 | -40 125 | No | No | SOT23-3 | |
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Si72xx-EVAL-KIT | Linear output magnetic sensor with 250 Hz PWM output | 250Hz PWM | Increasing Pulsewidth | 560 | 20 | 300 | No | 16 | -40 125 | Yes | No | SOT23-3 | |
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Si72xx-EVAL-KIT | Linear output magnetic sensor with sent output | SENT (Open Drain) | Increasing | 1020 | 20 | 1000 | No | 16 | -40 125 | No | No | SOT23-3 | |
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Si72xx-EVAL-KIT | Linear output magnetic sensor with 100 Hz PWM output | 100Hz PWM | Increasing Pulsewidth | 1020 | 20 | 150 | No | 16 | -40 125 | Yes | No | SOT23-3 | |
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Si72xx-EVAL-KIT | Linear output Hall effect magnetic sensor with SENT output | SENT (Open Drain) | Increasing | 1700 | 20 | 1000 | No | 16 | -40 125 | Yes | Yes | SOT23-3 | |
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Si72xx-EVAL-KIT | Linear output Hall effect magnetic sensor with analog output | Analog | Increasing Voltage | 1700 | 20 | 1000 | No | 16 | -40 125 | No | No | SOT23-3 | |
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Si72xx-EVAL-KIT | Linear output Hall effect magnetic sensor with analog output | Analog | Increasing Voltage | 5500 | 20 | 7000 | No | 16 | -40 125 | No | Yes | SOT23-5 |