VCM1195L
Three-Axis Magnetic Sensor
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1. Product Overview
The VCM1195L is a three-axis magnetic sensor with very low power
consumption developed specifically for IoT applications. This
surface-mount, small sized chip has integrated magnetic sensors with
signal condition ASIC, it offers the advantages of low noise, high
accuracy, low power consumption, offset cancellation and
temperature compensations.
The VCM1195L is based on Anisotropic Magneto-Resistive (AMR)
and CMOS technology. Linear three axis magnetic sensor along
with custom-designed 18-bit ADC and power management ASIC, it
provides digital signal with I²C serial bus.
The VCM1195L is in a 3x3x0.9mm
3
surface mount 16-pin land grid array (LGA) package. Applications
for the VCM1195L include vehicle detection for parking space, smart door lock, and other battery supplied
IoT devices.
2. Key
Features
Features
Benefits
Three-Axis Magneto-Resistive Sensors in a
3x3x0.9 mm
3
Land Grid Array Package (LGA),
Guaranteed to Operate Over an Temperature
Range of -40°C to +85°C.
Small Size for Highly Integrated Products. Signals Have
Been Digitized And Calibrated
18 Bit ADC With Low Noise AMR Sensors
Achieves 1 Milli-Gauss Field Resolution
Enables <1 degree Earth Magnetic Field Angle Changes.
Allows for Small Field Detections
Wide Magnetic Field Range (±8 Gauss)
Maximizes Sensor’s Full Dynamic Range and Resolution
Temperature Compensated Data Output and
Temperature Output
Automatically Maintains Sensor’s Sensitivity Under Wide
Operating Temperature Range
I2C (Standard ,Fast Modes) Interface
Simplified Digital Outputs
Low Operation Voltage (2.16V To 3.6V) and Low
Power Consumption (Standby Current 3μA)
Compatible with Battery Powered Applications
Lead Free Package Construction
RoHS Compliance
Software And Algorithm Support Available
Compassing Heading, Hard Iron, Soft Iron, and Auto
Calibration Libraries Available
3. Applications
Static Vehicle Detection
Typical Applications Include Geomagnetic Parking Detector, Parking Lock, etc
Consumer Electronics
Typical Applications Include Door Lock Position Detection, Sweeper Direction
Control, Notebooks Power Control, etc
Navigation
Typical Applications Include Auto Navigation Systems, and Personal
Navigation Devices etc
3-Axis Magnetic Sensor VCM1195L
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VtranTech_VCM1195L_SPEC_V1.2
4. Module/Circuit Diagram
Figure 1 Block Diagram
Table 1 Block Function
Block
Function
AMR Bridge
3 axis magnetic sensors
MUX
Multiplexer for sensor channels
PGA
Programmable gain amplifier for sensor signals
ADC
18 bit Analog-to-Digital converter
Signal Conditioning
Digital blocks for magnetic signal calibration and compensation
I
2
C
Interface logic data I/O
NVM
Non-Volatile memory for calibrated parameters
SET/RST Driver
Internal driver to initialize magnetic sensor
Reference
Voltage/Current reference for internal biasing
Clock Gen.
Internal oscillator for internal operation
POR
Power on reset
Temperature Sensor
Temperature sensor for internal sensitivity/offset compensation, and
temperature output