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HMC5883 Schematic ( PDF Datasheet ) - Honeywell

Teilenummer HMC5883
Beschreibung 3-Axis Digital Compass IC
Hersteller Honeywell
Logo Honeywell Logo 




Gesamt 19 Seiten
HMC5883 Datasheet, Funktion
3-Axis Digital Compass IC
HMC5883
Advanced Information
The Honeywell HMC5883 is a surface mount multi-chip module designed for low
field magnetic sensing with a digital interface for applications such as low cost
compassing and magnetometry. The HMC5883 includes our state of the art,
high-resolution HMC118X series magneto-resistive sensors plus Honeywell
developed ASIC containing amplification, automatic degaussing strap drivers,
offset cancellation, 12-bit ADC that enables 1° to 2° compass heading accuracy.
The I2C serial bus allows for easy interface. The HMC5883 is a 3.0x3.0x0.9mm
surface mount 16-pin leadless chip carrier (LCC). Applications for the HMC5883
include Mobile Phones, Netbooks, Consumer Electronics, Auto Navigation
Systems, and Personal Navigation Devices.
The HMC5883 utilizes Honeywell’s Anisotropic Magnetoresistive (AMR) technology that provides advantages over other
magnetic sensor technologies. These anisotropic, directional sensors feature precision in-axis sensitivity and linearity,
solid-state construction with very low cross-axis sensitivity designed to measure both direction and magnitude of Earth’s
magnetic fields, from milli-gauss to 8 gauss. Honeywell’s Magnetic Sensors are among the most sensitive and reliable
low-field sensors in the industry.
FEATURES
3-Axis Magnetoresistive Sensors and
ASIC in a 3.0x3.0x0.9mm LCC Surface
Mount Package
12-Bit ADC Coupled with Low Noise
AMR Sensors Achieves 5 milli-Gauss
Resolution in ±8 Gauss Fields
Built-In Self Test
Low Voltage Operations (1.6 to 3.3V)
Built-In Strap Drive Circuits
I2C Digital Interface
Lead Free Package Construction
Wide Magnetic Field Range (+/-8 Oe)
Software and Algorithm Support
Available
Fast 116 Hz Maximum Output Rate
BENEFITS
Small Size for Highly Integrated Products. Just Add a Micro-
Controller Interface, Plus Two External SMT Capacitors
Designed for High Volume, Cost Sensitive OEM Designs
Easy to Assemble & Compatible with High Speed SMT Assembly
Enables 1° to 2° Degree Compass Heading Accuracy
Enables Low-Cost Functionality Test after Assembly in Production
Compatible for Battery Powered Applications
Set/Reset and Offset Strap Drivers for Degaussing, Self Test, and
Offset Compensation
Popular Two-Wire Serial Data Interface for Consumer Electronics
RoHS Compliance
Sensors Can Be Used in Strong Magnetic Field Environments with a
1° to 2° Degree Compass Heading Accuracy
Compassing Heading, Hard Iron, Soft Iron, and Auto Calibration
Libraries Available
Enables Pedestrian Navigation and LBS Applications
Free Datasheet http://www.Datasheet4U.com






HMC5883 Datasheet, Funktion
HMC5883
DUAL SUPPLY REFERENCE DESIGN
SINGLE SUPPLY REFERENCE DESIGN
6 www.honeywell.com
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HMC5883 pdf, datenblatt
HMC5883
Configuration Register A
The configuration register is used to configure the device for setting the data output rate and measurement configuration.
CRA0 through CRA7 indicate bit locations, with CRA denoting the bits that are in the configuration register. CRA7 denotes
the first bit of the data stream. The number in parenthesis indicates the default value of that bit.
CRA7
(0)
CRA6
(0)
CRA5
(0)
CRA4
DO2 (1)
CRA3
DO1 (0)
CRA2
DO0 (0)
CRA1
MS1 (0)
CRA0
MS0 (0)
Table 6: Configuration Register A
Location
CRA7 to CRA5
CRA4 to CRA2
CRA1 to CRA0
Name
0
DO2 to DO0
MS1 to MS0
Description
These bits must be cleared for correct operation.
Data Output Rate Bits. These bits set the rate at which
data is written to all three data output registers.
Measurement Configuration Bits. These bits define the
measurement flow of the device, specifically whether or
not to incorporate an applied bias to the sensor into the
measurement.
Table 7: Configuration Register A Bit Designations
The Table below shows all selectable output rates. All three channels shall be measured within a given output rate. Other
output rates with maximum rate of 116 Hz can be achieved by monitoring DRDY interrupt pin in single measurement
mode. DRDY pin is normally high and is low for 5 µsec when data is placed in the output registers.
DO2 DO1
00
00
01
01
10
10
11
11
DO0 Typical Data Output Rate (Hz)
0 0.75
1 1.5
03
1 7.5
0 15 (default)
1 30
0 75
1 Not used
Table 8: Data Output Rates
MS1 MS0 Mode
00
01
10
11
Normal measurement configuration (default). In normal measurement
configuration the device follows normal measurement flow. The positive and
negative pins of the resistive load are left floating and high impedance.
Positive bias configuration for X and Y axes, negative bias configuration for
Z axis. In this configuration, a positive current is forced across the resistive
load for X and Y axes, a negative current for Z axis.
Negative bias configuration for X and Y axes, positive bias configuration for
Z axis. In this configuration, a negative current is forced across the resistive
load for X and Y axes, a positive current for Z axis.
This configuration is not used.
Table 9: Measurement Modes
12 www.honeywell.com
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