BMA120

BMA120 Datasheet

BMA120 Digital, triaxial acceleration sensor

Part	Datasheet
BMA120	BMA120 (pdf)

Related Parts	Information
BMA120-SHUTL	BMA120-SHUTL

PDF Datasheet Preview
BMA120 Digital, triaxial acceleration sensor Bosch Sensortec General description The BMA120 is a triaxial, low-g acceleration sensor with digital interfaces, aiming for low-power consumer market applications. The BMA120 allows measurement of accelerations in 3 perpendicular axes. An evaluation circuitry converts the output of a three-channel micromechanical acceleration sensing structure that works according to the differential capacitance principle. The BMA120 senses tilt, motion, shock and vibration in cell phones, handhelds, computer peripherals, man-machine interfaces, virtual reality features and game controllers. BMA120 target applications f Display switching e.g. portrait / landscape f Tap / Double-tap function f Menu scrolling f Gaming f Advanced power management for mobile devices f Drop protection for warranty logging f Shock detection f Pedometer / step counting Sensor operation The BMA120 represents a new generation of digital acceleration sensors. The BMA120 integrates a multitude of features that facilitates its use especially in the area of motion detection applications, such as device orientation detection, gaming, HMI and menu browser control. Key features BMA120 f User programmable g-range and bandwidth f Low-power consumption f SPI 3-wire / 4-wire and interface f User programmable interrupt engine f Ultra-low-power self-wake-up mode f Very small package f RoHS compliant, halogen-free The BMA 120 is highly in order to give the designer full when integrating the sensor into his system. All features can be set by software via the digital interface. As already introduced with the successful BMA150 and SMB380 acceleration sensors, also for the BMA120 g-ranges and bandwidths can be user programmed via the serial digital interface. Here the user can choose between an I2C and an SPI 3-wire/4-wire interface modes. One of the key elements of the BMA120 is the intelligent interrupt engine that gives the hard- and software designer full control. Various motion detection scenarios can be by the BMA120 and signaled to the system via a simple interrupt pin. By using the digital serial interface, the exact details of the motion event that triggered the interrupt can be read-out from the BMA120. Technical data Sensitivity axes Measurement range Sensitivity calibrated Resolution Nonlinearity Zero-g offset Bandwidth Digital input/output Supply voltage VDD / VDDIO Temperature range LGA package BMA120 x/y/z ±2g, ±4g, ±8g, ±16g switchable via SPI / 2g 16LSB/g 4g 8LSB/g 8g 4LSB/g 16g 2LSB/g 6bit >62.5mg ±2g range ±2% FS ±100 mg typ. 50Hz, 75Hz, 150Hz, 250Hz, 600Hz, 1kHz switchable via SPI / SPI & interrupt pin 1.8V ±10% -20°C +70°C 3 mm x 3 mm x mm 2 Bosch Sensortec BMA120 Pin top view Pin 1 CAPY 12 CAPX 1 VDD 2 GND 3 INT 4 BMA120 top view pads not visible CSB 5 6 PS 11 CAPZ 10 VDDD 9 SDX 8 SDO 7 SCX Pin Name Function No. 1 CAPX Do not connect! recommended Power supply analog 3 GND Shared ground 4 INT Interrupt output 5 CSB SPI chip-select Protocol select pin SCL I2C SCL / SPC SCK serial clock 8 SDO SPI serial data output SDA, I2C / SPI serial data in/out SDI, VDDD Power supply digital 11 CAPZ Do not connect! recommended

PDF Datasheet Preview

BMA120 Digital, triaxial acceleration sensor

Bosch Sensortec

General description The BMA120 is a triaxial, low-g acceleration sensor with digital interfaces, aiming for low-power consumer market applications. The BMA120 allows measurement of accelerations in 3 perpendicular axes. An evaluation circuitry converts the output of a three-channel micromechanical acceleration sensing structure that works according to the differential capacitance principle. The BMA120 senses tilt, motion, shock and vibration in cell phones, handhelds, computer peripherals, man-machine interfaces, virtual reality features and game controllers.

BMA120 target applications f Display switching e.g. portrait / landscape f Tap / Double-tap function f Menu scrolling f Gaming f Advanced power management for mobile devices f Drop protection for warranty logging f Shock detection f Pedometer / step counting

Sensor operation The BMA120 represents a new generation of digital acceleration sensors. The BMA120 integrates a multitude of features that facilitates its use especially in the area of motion detection applications, such as device orientation detection, gaming, HMI and menu browser control.

Key features BMA120 f User programmable g-range and bandwidth f Low-power consumption f SPI 3-wire / 4-wire and interface f User programmable interrupt engine f Ultra-low-power self-wake-up mode f Very small package f RoHS compliant, halogen-free

The BMA 120 is highly in order to give the designer full when integrating the sensor into his system. All features can be set by software via the digital interface. As already introduced with the successful BMA150 and SMB380 acceleration sensors, also for the BMA120 g-ranges and bandwidths can be user programmed via the serial digital interface. Here the user can choose between an I2C and an SPI 3-wire/4-wire interface modes. One of the key elements of the BMA120 is the intelligent interrupt engine that gives the hard- and software designer full control. Various motion detection scenarios can be by the BMA120 and signaled to the system via a simple interrupt pin. By using the digital serial interface, the exact details of the motion event that triggered the interrupt can be read-out from the BMA120.

Technical data Sensitivity axes Measurement range

Sensitivity calibrated

Resolution Nonlinearity Zero-g offset Bandwidth

Digital input/output Supply voltage VDD / VDDIO Temperature range LGA package

BMA120
x/y/z ±2g, ±4g, ±8g, ±16g switchable via SPI /
2g 16LSB/g 4g 8LSB/g 8g 4LSB/g 16g 2LSB/g 6bit >62.5mg ±2g range
±2% FS ±100 mg typ. 50Hz, 75Hz, 150Hz, 250Hz, 600Hz, 1kHz switchable via SPI / SPI & interrupt pin
1.8V ±10%
-20°C +70°C 3 mm x 3 mm x mm
2 Bosch Sensortec BMA120

Pin top view

Pin 1

CAPY 12

CAPX 1

VDD 2 GND 3

INT 4

BMA120 top view pads not visible

CSB 5 6 PS
11 CAPZ 10 VDDD 9 SDX 8 SDO 7 SCX

Pin Name Function No.
1 CAPX Do not connect! recommended

Power supply analog
3 GND Shared ground
4 INT Interrupt output
5 CSB SPI chip-select

Protocol select pin

SCL I2C SCL / SPC SCK serial clock
8 SDO SPI serial data output

SDA, I2C / SPI serial data in/out

SDI,

VDDD

Power supply digital
11 CAPZ Do not connect! recommended

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Datasheet ID: BMA120 521989