Si720x Hall Effect Magnetic Sensor

The Si720x switch and latch devices have a digital output that changes state with change in magnetic field settings. This product family has omni-polar and latch type outputs. The best in class sensitivity and low power of these devices allows you to detect fields over longer ranges and extend battery life.

AN1018: Using the Si72xx Hall Effect Sensors

Electrical, mechanical, and magnetic considerations surrounding the use of Si72xx devices.

Features

  • 400nA current at 5 samples/second
  • High sensitivity – Bop as low as 0.9 mT
  • Second threshold for tamper detection
  • Omnipolar Switch and Latch outputs available
  • LV (1.71 V - 5.5 V) and HV (3.3 V - 26.5 V) supply ranges available
  • AECQ-100 automotive qualified
  • Available in industry standard SOT23 packages

Si720x Product Matrix

Devices
Part Number Data Sheet Dev Kit Description Output Type Output Configuration idd (typ) (µA) Bop (max) Brp (min) |Bop-Brp| (typ) Full Scale Field Strength (mT) Sample Rate (Hz) Temp Compensation Tamper Threshold (mT) Vdd (min) Vdd (max) Temperature Range (°C) Package Type
Si72XX-WD-KIT Omnipolar switch Omnipolar Switch Low (Push-Pull) 0.4 1.1 0.2 0.4 20 5 0 1.7 3.6 0 70 SOT23-3
Si72XX-WD-KIT Omnipolar Switch Omnipolar Switch Low (Push-Pull) 0.4 1.1 0.2 0.4 20 5 19.8 1.7 3.6 0 70 SOT23-3
Si72XX-WD-KIT Omnipolar Switch Omnipolar Switch High (Push-Pull) 1.1 0.9 0.2 0.2 20 5 0.12% 19.8 1.7 3.6 0 70 SOT23-3
Si72XX-WD-KIT Omnipolar Switch Omnipolar Switch High (Push-Pull) 57 2.8 1.1 0.6 20 1000 0 1.7 3.6 0 125 SOT23-3
Si72XX-WD-KIT Omnipolar Switch Low (Push-Pull) 0.4 1.4 1.1 0.4 20 5 0 1.7 5.5 -40 125 SOT23-3
Si72XX-WD-KIT Omnipolar Switch Omnipolar Switch Low (Push-Pull) 0.4 2 0.6 0.6 20 5 19.8 1.7 5.5 -40 125 SOT23-3
Si72XX-WD-KIT Omnipolar Switch Omnipolar Switch Low (Open Drain) 0.4 2 0.6 0.6 20 5 0 1.7 5.5 -40 125 SOT23-3
Si72XX-WD-KIT Omnipolar Switch Omnipolar Switch Low (Open Drain) 0.4 2 0.6 0.6 20 5 19.8 1.7 5.5 -40 125 SOT23-3
Si72XX-WD-KIT Latch Latch High (Push-Pull) 0.4 0.65 0.65 0.8 20 5 0 1.7 3.6 0 70 SOT23-3
Si72XX-WD-KIT Latch Latch High (Push-Pull) 0.4 5.12 10.24 5.12 20 5 0 1.7 5.5 -40 125 SOT23-3
Si72XX-WD-KIT Omnipolar Switch Omnipolar Switch High (Open Drain) 0.4 1.1 0.2 0.4 20 1000 19.8 1.7 3.6 0 70 SOT23-5
Si72XX-WD-KIT Latch Latch High (Push-Pull) 0.4 1.1 1.1 1.8 20 1000 0 1.7 3.6 0 70 SOT23-5
Si72XX-WD-KIT Omnipolar Switch Omnipolar Switch Low (Open Drain) 5 3 0.8 0.6 20 100 0 3.3 26.5 -40 125 SOT23-3
Si72XX-WD-KIT Latch Latch Low (Open Drain) 5 1.4 1.4 2 20 100 0 3.3 26.5 -40 125 SOT23-3
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