Position Sensor. Si7205 Datasheet

Si7205 Sensor. Datasheet pdf. Equivalent

Part Si7205
Description Switch/Latch Hall Effect Magnetic Position Sensor
Feature Si720x Switch/Latch Hall Effect Magnetic Position Sensor Data Sheet The Si7201/2/3/4/5/6 family of .
Manufacture Silicon Laboratories
Datasheet
Download Si7205 Datasheet



Si7205
Si720x Switch/Latch Hall Effect Magnetic
Position Sensor Data Sheet
The Si7201/2/3/4/5/6 family of Hall effect magnetic sensors and latches from Silicon
Labs combines a chopper-stabilized Hall element with a low-noise analog amplifier, 13-
bit analog-to-digital converter, and a flexible comparator circuit. Leveraging Silicon Labs'
proven CMOS design techniques, the Si720x family incorporates digital signal process-
ing to provide precise compensation for temperature and offset drift.
Compared with existing Hall effect sensors, the Si720x family offers industry-leading
sensitivity, which enables use with larger air gaps and smaller magnets. For battery-
powered applications, the Si720x family offers very low power consumption to improve
operating life.
The Si720x devices are offered in 3-pin SOT23 and TO-92 packages, with power,
ground, and a single output pin that goes high or low as the magnetic field increases.
With the three-pin package, tamper indication is by the pin going back to its zero field
level at high magnetic field.
In the 5-pin SOT23 and 8-pin DFN(coming soon) packages, pins are available for both
sleep mode activation and separate tamper indication.
Applications:
• Replacement of reed switches in con-
sumer, and security applications
• Position sensing of HVAC knob, door
locks, windows, and other mechanical
devices
• BLDC motor control
• Camera image stabilization, zoom,
and autofocus
• Fluid level sensing
• Control knobs and selector switches
• General-purpose mechanical position
sensing
FEATURES
• High-Sensitivity Hall Effect Sensor
• Maximum BOP operating point/minimum
field strength of <1.1 mT
• Omnipolar or unipolar operation
• Integrated digital signal processing for
temperature and offset drift
compensation
• Low 400 nA Typical Current Consumption
at 5 samples per second
• Selectable / Programmable Sensitivity,
Hysteresis, Output Polarity and Sample
Rate
• Sensitivity Drift < ±3% over Temperature
• Wide Power Supply Voltage
• 1.71 to 5.5 V
• 3.3 to 26.5 V
• Selectable Output Options
• Open-drain output
• Digital high/low output
• Industry-Standard Packaging
• Surface mount SOT-23 (3 or 5 pin)
• Through hole TO-92 (3-pin)
• 1.4 x 1.6 mm 8-pin DFN package
(coming soon)
Hall
Element
VDD
Reg
GND
Si7201/2/3/4/5/6
ADC
Temp / Offset /
Mechanical Stress
Compensation
Control Logic
DIS (Optional)
OUT1
OUT2 / TAMPERb
(Optional)
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Si7205
Table of Contents
1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3. DISABLE Pin Timing . . . . . . . . . . . . . . . . . . . . . . . . . . .10
4. Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
5. Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
6. Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.1 SOT23 3-Pin Package . . . . . . . . . . . . . . . . . . . . . . . . . . .19
6.2 SOT23-5 5-Pin Package . . . . . . . . . . . . . . . . . . . . . . . . . . .21
6.3 TO92S 3-Pin Package . . . . . . . . . . . . . . . . . . . . . . . . . . .23
7. Land Patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7.1 SOT23 3-Pin PCB Land Pattern . . . . . . . . . . . . . . . . . . . . . . . .24
7.2 SOT23-5 5-Pin PCB Land Pattern . . . . . . . . . . . . . . . . . . . . . . .25
8. Top Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
8.1 SOT23 3-Pin Top Marking . . . . . . . . . . . . . . . . . . . . . . . . . .26
8.2 SOT23-5 5-Pin Top Marking . . . . . . . . . . . . . . . . . . . . . . . . .27
8.3 TO92 Top Marking. . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
9. Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
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