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PDF MAG3110 Data sheet ( Hoja de datos )
| Número de pieza | MAG3110 | |
| Descripción | Digital Magnetometer | |
| Fabricantes | Freescale Semiconductor | |
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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
MAG3110
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 I2C 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 I2C interface
• Low-power, single-shot measurement mode
• RoHS compliant
Applications
• Electronic Compass (e-compass)
• Location-Based Services
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
1
2
3
4
5
10 GND
9 INT1
8 VDDIO
7 SCL
6 SDA
Pin Connections
Ruggedized Target markets
• 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
I2C 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.
1 page  
2 Operating and Electrical Specifications
2.1 Operating characteristics
Table 3. Operating characteristics @ VDD = 2.4 V, VDDIO = 1.8 V, T = 25°C unless otherwise noted.
Parameter
Full-scale range
Output data range(1)
Sensitivity
Sensitivity change versus temperature
Test Conditions
Symbol
FS
So
Tcs
Min Typ Max
Unit
±1000
µT
-30000
+30000 LSB
0.10 µT/LSB
±0.1 %/°C
Zero-flux offset accuracy
Hysteresis(2)
Non linearity
Best fit straight line(3)
Magnetometer output noise
OS = 00(4)
±100
0.25
1
µT
%
NL
-1 ±0.3
1
%FS
0.4
OS = 01
OS = 10
Noise
0.35
µT rms
0.3
OS = 11
0.25
Sensor die-to-package misalignment error (yaw)
D2PEyaw
±0.37 ±1.36 degrees
Operating temperature range
Top -40
+85 °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.
Sensors
Freescale Semiconductor, Inc.
MAG3110
5
5 Page 
A low to high transition on the SDA line while the SCL line is high is defined as a stop condition (SP) signal. A write or burst write
is always terminated by the master issuing the SP signal. A master should properly terminate a read by not acknowledging a byte
at the appropriate time in the protocol. A master may also issue a repeated start signal (SR) during a transfer.
The 7-bit I2C slave address assigned to MAG3110 is 0x0E (standard); the address assigned to FXMS3110CD is 0x0F
(Windows™ 8).
4.2.2 I2C Read/Write operations
Single byte read
The master (or MCU) transmits a start condition (ST) to the MAG3110, followed by the slave address, with the R/W bit set to “0”
for a write, and the MAG3110 sends an acknowledgement. Then the master (or MCU) transmits the address of the register to
read and the MAG3110 sends an acknowledgement. The master (or MCU) transmits a repeated start condition (SR), followed by
the slave address with the R/W bit set to “1” for a read from the previously selected register. The MAG3110 then acknowledges
and transmits the data from the requested register. The master does not acknowledge (NAK) the transmitted data, but transmits
a stop condition to end the data transfer.
Multiple byte read
When performing a multi-byte or “burst” read, the MAG3110 automatically increments the register address read pointer after a
read command is received. Therefore, after following the steps of a single byte read, multiple bytes of data can be read from
sequential registers after each MAG3110 acknowledgment (AK) is received until a no acknowledge (NAK) occurs from the master
followed by a stop condition (SP) signaling the end of transmission.
Single byte write
To start a write command, the master transmits a start condition (ST) to the MAG3110, followed by the slave address with the R/W
bit set to “0” for a write, and the MAG3110 sends an acknowledgement. Then the master (or MCU) transmits the address of the
register to write to, and the MAG3110 sends an acknowledgement. Then the master (or MCU) transmits the 8-bit data to write to
the designated register and the MAG3110 sends an acknowledgement that it has received the data. Since this transmission is
complete, the master transmits a stop condition (SP) to end the data transfer. The data sent to the MAG3110 is now stored in the
appropriate register.
Multiple byte write
The MAG3110 automatically increments the register address write pointer after a write command is received. Therefore, after
following the steps of a single byte write, multiple bytes of data can be written to sequential registers after each MAG3110
acknowledgment (ACK) is received.
Sensors
Freescale Semiconductor, Inc.
MAG3110
11
11 Page | ||
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