Freescale Semiconductor
Data Sheet: Technical Data
An Energy Efficient Solution by Freescale
Document Number: MAG3110
Rev. 9.2, 02/2013
Xtrinsic MAG3110 Three-Axis,
Digital
Magnetometer
Freescale’s MAG3110 is a small, low-power, digital 3-axis magnetometer.
The device can be used in conjunction with a 3-axis accelerometer to realize an
orientation independent electronic compass that can provide accurate heading
information. It features a standard I
2
C serial interface output and smart embedded
functions.
The MAG3110 is capable of measuring magnetic fields with an output data rate
(ODR) up to 80 Hz; these output data rates correspond to sample intervals from
12.5 ms to several seconds.
The MAG3110 is available in a plastic DFN package and it is guaranteed to
operate over the extended temperature range of -40°C to +85°C.
Features
•
•
•
•
•
•
•
•
•
•
1.95 V to 3.6 V supply voltage (VDD)
1.62 V to VDD IO voltage (VDDIO)
Ultra small 2 mm x 2 mm x 0.85 mm, 0.4 mm pitch, 10-pin package
Full-scale range ±1000
T
Sensitivity of 0.10
T
Noise down to 0.25
T
rms
Output Data Rates (ODR) up to 80 Hz
400 kHz Fast Mode compatible I
2
C interface
Low-power, single-shot measurement mode
RoHS compliant
MAG3110
Top and Bottom View
10-PIN DFN
2 mm x 2 mm x 0.85 mm
CASE 2154-02
Top View
Cap-A
VDD
NC
Cap-R
GND
10
GND
9
8
7
6
1
2
3
4
5
INT1
VDDIO
SCL
SDA
Applications
• Electronic Compass (e-compass)
• Location-Based Services
Ruggedized
Target markets
•
Pin Connections
Smartphones, personal navigation devices, robotics, UAVs, speed sensing, current sensing and wrist watches with
embedded electronic compasses (e-compass) function.
Table 1. Ordering information
Part number
MAG3110FCR1
FXMS3110CDR1
I
2
C Address
0x0E
0x0F
Package description
DFN-10
DFN-10
Shipping
Tape and Reel (1000)
Tape and Reel (1000)
© 2011-2013 Freescale Semiconductor, Inc. All rights reserved.
Contents
1
2
Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Application circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Operating and Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Operating characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4 I
2
C Interface characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.5 I
2
C pullup resistor selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Functionality. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1 Factory calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2 Digital interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Register Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.1 Sensor Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.2 Device ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.3 User Offset Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.4 Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.5 Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Geomagnetic Field Maps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
PCB Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7.1 Overview of Soldering Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7.2 Halogen Content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7.3 PCB Mounting Recommendations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3
4
5
6
7
Related Documentation
The MAG3110 device features and operations are described in a variety of reference manuals, user guides, and application
notes. To find the most-current versions of these documents:
1.
2.
3.
Go to the Freescale homepage at:
http://www.freescale.com/
In the Keyword search box at the top of the page, enter the device number MAG3110.
In the Refine Your Result pane on the left, click on the Documentation link.
2
Sensors
Freescale Semiconductor, Inc.
1
Block diagram and pin description
X-axis
Digital Signal
Processing and
Control
SDA
SCL
MUX
ADC
Y-axis
Z-axis
INT1
Clock Oscillator
Trim Logic
Regulator
+
Reference
VDD
VDDIO
Figure 1. Block diagram
X
1
Cap-A
VDD
NC
Cap-R
GND
1
2
3
4
5
10
GND
9
8
7
6
INT1
VDDIO
SCL
SDA
Y
Z
(TOP VIEW)
(TOP VIEW)
Figure 2. Pin connections and measurement coordinate system
MAG
LYW
L = WAFER LOT
Y = LAST DIGIT OF YEAR
W = WORK WEEK
Figure 3. Device marking diagram
MAG3110
Sensors
Freescale Semiconductor, Inc.
3
Table 2. Pin descriptions
Pin
1
2
3
4
5
6
7
8
9
10
Name
Cap-A
VDD
NC
Cap-R
GND
SDA
SCL
VDDIO
INT1
GND
Bypass cap for internal regulator
Power supply, 1.95 V – 3.6 V
Do not connect
Magnetic reset pulse circuit capacitor connection
GND
I
2
C Serial Data
I
2
C Serial Clock
Digital interface supply, 1.65 V - VDD
Interrupt - active high output
GND
Function
1.1
Application circuit
Device power is supplied through the VDD line. Power supply decoupling capacitors (100 nF ceramic) should be placed as near
as possible to pins 1 and 2 of the device. Additionally a 1F (or larger) capacitor should be used for bulk decoupling of the VDD
supply rail as shown in
Figure 4.
VDDIO supplies power for the digital I/O pins SCL, SDA, and INT1.
The control signals SCL and SDA, are not tolerant of voltages more than VDDIO + 0.3 volts. If VDDIO is removed, the control
signals SCL and SDA will clamp any logic signals through their internal ESD protection diodes.
1
100 nF
2
3
VDD
1
F
4
Cap-A
VDD
NC
Cap-R
GND
GND
INT1
VDDIO
SCL
SDA
10
9
8
7
6
100 nF
4.7 K
4.7 K
SCL
SDA
INT1
VDDIO
100 nF
100 nF
5
(Top view)
Figure 4. Electrical connection
MAG3110
4
Sensors
Freescale Semiconductor, Inc.
2
2.1
Operating and Electrical Specifications
Operating characteristics
Parameter
Test Conditions
Symbol
FS
-30000
So
Tcs
0.10
±0.1
±100
0.25
1
Min
Typ
±1000
+30000
Max
Unit
µT
LSB
µT/LSB
%/°C
µT
%
Table 3. Operating characteristics @ VDD = 2.4 V, VDDIO = 1.8 V, T = 25°C unless otherwise noted.
Full-scale range
Output data range
(1)
Sensitivity
Sensitivity change versus temperature
Zero-flux offset accuracy
Hysteresis
(2)
Non linearity
Best fit straight line
(3)
Magnetometer output noise
OS = 00
(4)
OS = 01
NL
-1
±0.3
0.4
0.35
1
%FS
Noise
OS = 10
OS = 11
Sensor die-to-package misalignment error (yaw)
Operating temperature range
D2PE
yaw
T
op
-40
0.3
0.25
±0.37
±1.36
+85
µT rms
degrees
°C
1. Output data range is the sum of ±10000 LSBs full-scale range, ±10000 LSBs user defined offset (provided that CTRL_REG2[RAW] = 0) and
±10000 zero-flux offset.
2. Hysteresis is measured from 0
T to 1000
T to 0
T and from 0
T to -1000
T to 0
T.
3. Best-fit straight line over the 0 to ±1000
T full-scale range.
4. OS = Over Sampling Ratio.
MAG3110
Sensors
Freescale Semiconductor, Inc.
5
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