HMC5883L数据手册.pdf-资料库

3-Axis Digital Compass IC HMC5883L The Honeywell HMC5883L 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 HMC5883L includes our state-of-the- art, high-resolution HMC118X series magneto-resistive sensors plus an ASIC containing amplification, automatic degaussing strap drivers, offset cancellation, and a 12-bit ADC that enables 1° to 2° compass heading accuracy. The I2C serial bus allows for easy interface. The HMC5883L is a 3.0x3.0x0.9mm surface mount 16-pin leadless chip carrier (LCC). Applications for the HMC5883L include Mobile Phones, Netbooks, Consumer Electronics, Auto Navigation Systems, and Personal Navigation Devices. Advanced Information The HMC5883L 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. These sensors’ solid-state construction with very low cross-axis sensitivity is designed to measure both the direction and the 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 BENEFITS  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 (2.16 to 3.6V) and Low Power Consumption (100 μA)  Built-In Strap Drive Circuits  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    I2C Digital Interface Lead Free Package Construction   Wide Magnetic Field Range (+/-8 Oe)   Software and Algorithm Support Available  Fast 160 Hz Maximum Output Rate 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 北京华信昊通科技有限公司地址：北京市石景山区杨庄东路126号星宇大厦520 Tel:010-51620429 51620428 e-mail:13911707235@139.com http://www.cgs-tech.com/

HMC5883L SPECIFICATIONS (* Tested at 25°C except stated otherwise.) Characteristics Power Supply Supply Voltage Conditions* Min Typ Max Units VDD Referenced to AGND VDDIO Referenced to DGND 2.16 1.71 3.6 1.8 VDD+0.1 Average Current Draw Idle Mode Measurement Mode (7.5 Hz ODR; No measurement average, MA1:MA0 = 00) VDD = 2.5V, VDDIO = 1.8V Full scale (FS) – total applied field (Typical) 3-bit gain control VDD=3.0V, GN=2 ±2.0 gauss input range ±2.0 gauss input range Performance Field Range Mag Dynamic Range Resolution Linearity Hysteresis Cross-Axis Sensitivity Test Conditions: Cross field = 0.5 gauss, Happlied = ±3 gauss - - -8 ±1 2 100 5 ±25 ±0.2% Output Rate (ODR) Continuous Measurment Mode 0.75 Measurement Period From receiving command to data ready Single Measurement Mode Turn-on Time Gain Tolerance I2C Address I2C Rate I2C Hysteresis Self Test General ESD Voltage Ready for I2C commands All gain/dynamic range settings 7-bit address 8-bit read address 8-bit write address Controlled by I2C Master Hysteresis of Schmitt trigger inputs on SCL and SDA - Fall (VDDIO=1.8V) Rise (VDDIO=1.8V) X & Y Axes Z Axis X & Y Axes (GN=100) Z Axis (GN=100) Human Body Model (all pins) Machine Model (all pins) Operating Temperature Ambient Storage Temperature Ambient, unbiased Reflow Classification MSL 3, 260 C Peak Temperature Package Size Package Height Length and Width -30 -40 2.85 0.8 6 200 ±5 0x1E 0x3D 0x3C 0.2*VDDIO 0.8*VDDIO ±1.16 ±1.08 510 3.00 0.9 - - +8 ±8 0.1 75 160 400 TBD TBD 85 125 3.15 1.0 Volts Volts μA μA gauss gauss milli-gauss ±% FS ppm %FS/gauss Hz Hz msec μs % hex hex hex kHz Volts Volts gauss LSb Volts °C °C mm mm 2 北京华信昊通科技有限公司地址：北京市石景山区杨庄东路126号星宇大厦520 Tel:010-51620429 51620428 e-mail:13911707235@139.com http://www.cgs-tech.com/

HMC5883L Absolute Maximum Ratings (* Tested at 25°C except stated otherwise.) Characteristics Min Max 4.8 4.8 Units Volts Volts -0.3 -0.3 Description Supply Voltage VDD Supply Voltage VDDIO PIN CONFIGURATIONS Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Name SCL VDD NC S1 NC NC NC SETP GND C1 GND SETC VDDIO NC DRDY SDA Serial Clock – I2C Master/Slave Clock Power Supply (2.16V to 3.6V) Not to be Connected Tie to VDDIO Not to be Connected Not to be Connected Not to be Connected Set/Reset Strap Positive – S/R Capacitor (C2) Connection Supply Ground Reservoir Capacitor (C1) Connection Supply Ground S/R Capacitor (C2) Connection – Driver Side IO Power Supply (1.71V to VDD) Not to be Connected Data Ready, Interrupt Pin. Internally pulled high. Optional connection. Low for 250 µsec when data is placed in the data output registers. Serial Data – I2C Master/Slave Data Table 1: Pin Configurations Arrow indicates direction of magnetic field that generates a positive output reading in Normal Measurement configuration. 北京华信昊通科技有限公司地址：北京市石景山区杨庄东路126号星宇大厦520 Tel:010-51620429 51620428 e-mail:13911707235@139.com http://www.cgs-tech.com/ 3

HMC5883L PACKAGE OUTLINES PACKAGE DRAWING HMC5883L (16-PIN LPCC, dimensions in millimeters) MOUNTING CONSIDERATIONS The following is the recommend printed circuit board (PCB) footprint for the HMC5883L. 4 北京华信昊通科技有限公司地址：北京市石景山区杨庄东路126号星宇大厦520 Tel:010-51620429 51620428 e-mail:13911707235@139.com http://www.cgs-tech.com/ 0.1001.2751.2750.5003.0003.0000.4500.300x 8x 12HMC5883 Land Pad Pattern(All dimensions are in mm)

HMC5883L PCB Pad Definition and Traces The HMC5883L is a fine pitch LCC package. Refer to previous figure for recommended PCB footprint for proper package centering. Size the traces between the HMC5883L and the external capacitors (C1 and C2) to handle the 1 ampere peak current pulses with low voltage drop on the traces. Stencil Design and Solder Paste A 4 mil stencil and 100% paste coverage is recommended for the electrical contact pads. Reflow Assembly This device is classified as MSL 3 with 260 C peak reflow temperature. A baking process (125 C, 24 hrs) is required if device is not kept continuously in a dry (< 10% RH) environment before assembly. No special reflow profile is required for HMC5883L, which is compatible with lead eutectic and lead-free solder paste reflow profiles. Honeywell recommends adherence to solder paste manufacturer’s guidelines. INTERNAL SCHEMATIC DIAGRAM HMC5883L 北京华信昊通科技有限公司地址：北京市石景山区杨庄东路126号星宇大厦520 Tel:010-51620429 51620428 e-mail:13911707235@139.com http://www.cgs-tech.com/ 5

HMC5883L DUAL SUPPLY REFERENCE DESIGN SINGLE SUPPLY REFERENCE DESIGN 6 北京华信昊通科技有限公司地址：北京市石景山区杨庄东路126号星宇大厦520 Tel:010-51620429 51620428 e-mail:13911707235@139.com http://www.cgs-tech.com/

HMC5883L PERFORMANCE The following graph(s) highlight HMC5883L’s performance. Typical Resolution Typical Measurement Period in Single-Measurement Mode * Monitoring of the DRDY Interrupt pin is only required if maximum output rate is desired. 北京华信昊通科技有限公司地址：北京市石景山区杨庄东路126号星宇大厦520 Tel:010-51620429 51620428 e-mail:13911707235@139.com http://www.cgs-tech.com/ 7

HMC5883L BASIC DEVICE OPERATION Anisotropic Magneto-Resistive Sensors The Honeywell HMC5883L magnetoresistive sensor circuit is a trio of sensors and application specific support circuits to measure magnetic fields. With power supply applied, the sensor converts any incident magnetic field in the sensitive axis directions to a differential voltage output. The magnetoresistive sensors are made of a nickel-iron (Permalloy) thin-film and patterned as a resistive strip element. In the presence of a magnetic field, a change in the bridge resistive elements causes a corresponding change in voltage across the bridge outputs. These resistive elements are aligned together to have a common sensitive axis (indicated by arrows in the pinout diagram) that will provide positive voltage change with magnetic fields increasing in the sensitive direction. Because the output is only proportional to the magnetic field component along its axis, additional sensor bridges are placed at orthogonal directions to permit accurate measurement of magnetic field in any orientation. Self Test To check the HMC5883L for proper operation, a self test feature in incorporated in which the sensor is internally excited with a nominal magnetic field (in either positive or negative bias configuration). This field is then measured and reported. This function is enabled and the polarity is set by bits MS[n] in the configuration register A. An internal current source generates DC current (about 10 mA) from the VDD supply. This DC current is applied to the offset straps of the magneto- resistive sensor, which creates an artificial magnetic field bias on the sensor. See SELF TEST OPERATION section later in this datasheet for additional details. Power Management This device has two different domains of power supply. The first one is VDD that is the power supply for internal operations and the second one is VDDIO that is dedicated to IO interface. It is possible to work with VDDIO equal to VDD; Single Supply mode, or with VDDIO lower than VDD allowing HMC5883L to be compatible with other devices on board. I2C Interface Control of this device is carried out via the I2C bus. This device will be connected to this bus as a slave device under the control of a master device, such as the processor. This device is compliant with I2C-Bus Specification, document number: 9398 393 40011. As an I2C compatible device, this device has a 7-bit serial address and supports I2C protocols. This device supports standard and fast modes, 100kHz and 400kHz, respectively, but does not support the high speed mode (Hs). External pull-up resistors are required to support these standard and fast speed modes. Activities required by the master (register read and write) have priority over internal activities, such as the measurement. The purpose of this priority is to not keep the master waiting and the I2C bus engaged for longer than necessary. Internal Clock The device has an internal clock for internal digital logic functions and timing management. H-Bridge for Set/Reset Strap Drive The ASIC contains large switching FETs capable of delivering a large but brief pulse to the Set / Reset strap of the sensor. This strap is largely a resistive load. There is no need for an external Set/Reset circuit. The controlling of the Set/Reset function is done automatically by the ASIC for each measurement. One half of the difference from the measurements taken after a set pulse and after a reset pulse will be put in the data output register for each of the three axes. By doing so, the sensor’s internal offset and its temperature dependence is removed/cancelled for all measurements. Charge Current Limit The current that reservoir capacitor (C1) can draw when charging is limited for both single supply and dual supply 8 北京华信昊通科技有限公司地址：北京市石景山区杨庄东路126号星宇大厦520 Tel:010-51620429 51620428 e-mail:13911707235@139.com http://www.cgs-tech.com/

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