Temperature Sensor. Si7210 Datasheet

Si7210 Sensor. Datasheet pdf. Equivalent


Part Si7210
Description I2C Hall Effect Magnetic Position and Temperature Sensor
Feature Si7210 I2C Hall Effect Magnetic Position and Temperature Sensor Data Sheet The Si7210 family of Hal.
Manufacture Silicon Laboratories
Datasheet
Download Si7210 Datasheet


Si7210 I2C Hall Effect Magnetic Position and Temperature Sen Si7210 Datasheet
Recommendation Recommendation Datasheet Si7210 Datasheet




Si7210
Si7210 I2C Hall Effect Magnetic Position
and Temperature Sensor Data Sheet
The Si7210 family of Hall effect magnetic sensors from Silicon Labs combines a chop-
per-stabilized Hall element with a low-noise analog amplifier, 13-bit analog-to-digital
converter, and an I2C interface. Leveraging Silicon Labs' proven CMOS design techni-
ques, the Si7210 family incorporates digital signal processing to provide precise com-
pensation for temperature and offset drift.
Compared with existing Hall effect sensors, the Si7210 family offers industry-leading
sensitivity, which enables use with larger air gaps and smaller magnets. The integrated
13-bit high-precision ADC delivers high output linearity with very low noise for the high-
est measurement accuracy. For battery-powered applications, the Si7210 family offers
very low power consumption to improve operating life.
The Si7210 family supports a bidirectional I2C interface which provides full configurabili-
ty of the Hall effect sensor operate and release points. At any time, the 13-bit magnetic
field strength can be read through the I2C interface.
Applications
• Mechanical position sensing in consum-
er, industrial applications
• Replacement of reed switches
• Fluid level measurement
• Speed sensing
• Utility meters
• Control knobs and selector switches
FEATURES
• High-Sensitivity Hall Effect Sensor
• Adjustable Full Scale (Standard
Offerings are ±20mT and ±200 mT Full
Scale)
• Integrated Digital Signal Processing for
Temperature and Offset Drift
Compensation
• High-Precision 13-bit Signal Path
• Output Bandwidth up to 20 kHz
• Sensitivity Drift < ±5% over 0-70 °C
Digital I2C Interface
Four Selectable I2C Addresses
• Optional Digital Alert Output
• Wide 1.7 to 5.5 V Power Supply Voltage
• Temperature Sensor Data also available
by I2C (accuracy ±1°C)
• Low 50 nA Sleep Mode Current
Consumption
• Industry-Standard Packaging
• Surface-Mount SOT23-5
• 1.4 x 1.6 mm 8-pin DFN package
(coming soon)
Hall Element
VDD Reg
GND
Si7210
ADC
Temp / Offset /
Mechanical Stress
Compensation
DSP & Control
Logic
SCL
SDA
ALERT
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Si7210
Table of Contents
1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3. I2C Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4. Register Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1 Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
4.1.1 Chip ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
4.1.2 Fields Associated with Reading DATA . . . . . . . . . . . . . . . . . . . .12
4.1.3 Fields Associated with Configuring the Output Pin. . . . . . . . . . . . . . . . .13
4.1.4 Registers Associated with Control of Idle Time . . . . . . . . . . . . . . . . . .14
4.1.5 Registers Associated with Setting the Output Scale . . . . . . . . . . . . . . . .15
4.1.6 Registers Associated with Adding Digital Filtering . . . . . . . . . . . . . . . . .15
4.1.7 Registers to Read OTP Data . . . . . . . . . . . . . . . . . . . . . . . .16
4.1.8 Control of On-Chip Test Coil . . . . . . . . . . . . . . . . . . . . . . . .17
5. Making Temperature Measurements. . . . . . . . . . . . . . . . . . . . . . 18
6. Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
7. Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8. Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8.1 SOT23-5 5-Pin Package . . . . . . . . . . . . . . . . . . . . . . . . . . .22
9. Land Patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
9.1 SOT23-5 5-Pin PCB Land Pattern . . . . . . . . . . . . . . . . . . . . . . .24
10. Top Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
10.1 SOT23-5 5-Pin Top Marking . . . . . . . . . . . . . . . . . . . . . . . . .25
11. Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
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