Future electronics technology day rohm smart device iot sensors

ROHM Smart device &
Sensors for IoT

© 2016 ROHM Semiconductor Singapore Pte. Ltd.


Content
• Overview of Rohm Solution for IoT
• Field sensors lineup
• Motion sensors lineup
• Kionix & MEMS sensor
• Reference & Evaluation kit available
ã Smart Device solutions
ã Wireless charging

â 2016 ROHM Semiconductor Singapore Pte. Ltd.

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Rohm Sensing Solution for IoT
More smart for Smart life and Smart community. By Wireless Sensor Network solution of Rohm.

© 2016 ROHM Semiconductor Singapore Pte. Ltd.

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Sensor Line up and key technology

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900E14C


Field & Environmental
sensors

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Light Sensor

W/W Share No.5

Best Solution
For Dark Window

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Ambient Light Sensors
Digital Output (I2C)

Analog Output (current)

LED Driver
Micro Controller

ALS(BH16xx)

ADC

Micro Controller

IOUT

GC2
GC1
GC2
Control the Gain
changing

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Light

I2C
I/F

SCL

ALS(BH17xx)

SDA

SCL
SDAGC2

Light

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3 in 1 Module - RPR-0521
ALS/Proximity + IR LED
Characteristic

Detector
(ALS and Proximity)

Outline [mm]
3.94 x 2.36 x 1.35

Emitter
(IR LED)

Normalized Optical Responsivity

3 in 1 Model

RPR-0400
RPR-0410
RPR-0521

1.0

0.5

0.0
-60

-30

0
Angle [°]

HWHM = +/- 45 to +/-50 degree
(HWHM : Half width at half maxim)

© 2016 ROHM Semiconductor Singapore Pte. Ltd.

30

60

Simulation Tool
Light Tools 7.3.0
Condition
-

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+

Hall Sensors

Hall sensors detect magnetic fields
Monopole detection

Bipolar detection

（S pole or N pole）

Bipolar detection （With Polarity Discrimination Output ）
S pole detection

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N pole detection

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Hall IC
Rohm hall sensor shipment in mobile market is top class worldwide

Various Lineup
✔ Unipolar
✔ Omnipolar (Polarity Discrimination)
✔ Linear output

Shipment
More than
100Mpcs/Y

0.65
mm□

High Sensitivity
For Thin Products
✔ High and Low sensitivity lineup
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World Smallest
Package
✔ Thickness: 0.6mm、0.4mm、0.33mm

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Hall Sensors
Hall Sensors

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Color Sensor
BH1745NUC
Features
・Power Supply：2.3～3.6V

Structure

Color filter

Ircut filter

Color sensor

・Sensitivity：0.005lx/step

・Current consumption：130uAtyp
・ I2C Interface

Black filter

Package

2.1mm x 2.0mm x 0.6mmMAX
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Color Sensor
Color temperature calculation
BH1745 is possible to get color temperature for various light source
BH1745NUC

BH1745NUC

Competitor

Competitor

Fluorescent Lamp: 5000K

Incandescent Lamp: 2800K

* Cross point color means light source color.
© 2016 ROHM Semiconductor Singapore Pte. Ltd.

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Color Sensor (BH1745)
Typical Application Circuit

Applications:
•
•

Industrial equipment and processing equipment
Display-equipped devices such as smartphones and tablets

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Application - Color Sensor

Back-light control for Smartphone, Tablet PC, etc.
Color temperature control in the LED lighting space

Camera Image control for Smartphone, etc.

Color analysis in the factory

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Ultraviolet Sensor (Lapis ML8511)
Output Voltage vs. UV Intensity

ML8511 Features:
•
•
•
•
•

Optical sensor to UV-A and UV-B
Realize equalization of an output voltage by trimming
The analog voltage output proportional to UV light intensity
Low current operation ( 300µA Typ. ) and low standby current ( 0.1àA Typ. )
Compact QFN package ( 4.0mm ì 3.7mm ì 0.73mm )

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Ultraviolet Sensor - Applications
UV-Index

- Smartphone

CATEGORY

- Smart Watch

UVI RANGE

- Weather Station
- Envelopment monitor

UV-A
UV-B

- Cosmetic

- Accessory

UV-Index

Output [V]

- Health care
UV Sensor

2.0

Singapore (fine）

Tokyo（fine）
1.5

6.25

Safe
0
0

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Danger
Caution

1.0

Weather Station

12.5

5

８

10

UV intensity [mW/cm2]
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BM1383GLV / 1384GLV – Pressure Sensor
Function
・Piezo-resisitive MEMS pressure sensor
・Pressure range：300hPa～1100hPa
・Supply voltage：1.71～3.6V
・Low current consumption
・Integrated temperature sensor
・Integrated temperature
compensation function
・Selectable accurate modes
・Interface：I2C

Package/Structure
BM1383 : Rohm Original

2.5mm x 2.5mm x 0.95mm

BM1384 : Co. S Compatible

Internal structure
2.5mm x 2.5mm x 0.95mm

Block diagram
VDD

Pressure
Sensor
Element

MU
X

AD
C

Signal
Processin
g

I2C

SDA
SCL
INT

Temperature
Sensor

CLK
VSS

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Comparison
Competitor

Competitor

Coy B

Coy S

2.5 x 2.5
x 0.95

2.0 x 2.5
x 0.95

2.5 x 2.5
x 1.0

Supply voltage / IO voltage (V)

1.71～3.6V

1.71～3.6V /
1.2～3.6V

1.7～3.6V /
1.7～3.6V

Dynamic range (hPa)

300～1100

300～1100

260～1260

+/- 1.0

+/- 1.0

+/- 1.0

15.5

2.8

30

+/- 0.06
(+/- 0.5m)

+/- 0.06
(+/- 0.5m)

+/- 0.10
(+/- 0.8m)

99

24.8

-

+/- 0.024
(+/- 0.2m)

+/- 0.026
(+/- 0.2m)

-

1.0

0.1

0.5

Integrated

External

Integrated

BM1383GLV
Package size (mm)

Absolute pressure accuracy (hPa)
Current consumption
(uA)

Normal mode

Accurate
mode

Relative pressure
accuracy (hPa)
Current consumption
(uA)
Relative pressure
accuracy (hPa)

Stand-by mode current consumption (uA)
Temperature compensation function

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Comparison with the Competitor
 Relative pressure accuracy ( Comparison in high accurate mode )
1000.5

1000.5

1000.5

1000.4

1000.3

1000.2

Company S
Absolute pressure [hPa]

Absolute pressure [hPa]

Absolute pressure [hPa]

Company B
1000.4

1000.4

1000.3

1000.3

1000.2

1000.2

1000.1

1000.1
0

20

40

60

80

100

120

Time [sec]

Relative pressure accuracy ±0.2m
Lower noise level with averaging

© 2016 ROHM Semiconductor Singapore Pte. Ltd.

1000.1

0

20

40

60

80

100

120

Time [sec]

Relative pressure accuracy ±0.2m

0

20

40

60

80

100

120

Time [sec]

Relative pressure accuracy ±1.0m

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Wide Range of Pressure Detection

Height can be monitored by measuring air pressure
Mt. Everest
8,848m：314hPa

Improve accuracy of
calorie calculation
of activity tracker.

Floor detection
of indoor navigation.

Mt. Fuji
3,776m：635hPa

20m：1,010hPa

Sea level calculation
in mountain climbing
Sea level 0m：1,013hPa

20cm：0.024hPa

0.075hPa
=60cm

© 2016 ROHM Semiconductor Singapore Pte. Ltd.

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Barometric Pressure Sensor – Application


Navigation System



Exercise Monitoring

For Indoor/Outdoor Navigation System
Backup a/o Compensation of GPS System

Calorie Calculation/Compensation Support with
monitoring exercise at going Up/Down stairs

 Application
Smartphone, GPS Devices

 Application
Wearable Devices, High Class Watch





Gathering Weather Information

FAN Motor Control

Operation in the server to gather pressure data

based on climate change

To measure the atmospheric pressure, and then
output a highly suitable air flow

 Application
Wireless Sensor Network, Field Server,
Agricultural Monitoring System

 Application
Projector, Server, TV, FAN Motor

© 2016 ROHM Semiconductor Singapore Pte. Ltd.

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BM1422GMV – MI(Magneto Impedance) Sensor
Package/Structure

Function
・ 3-axis Magnetic Sensor using MI Elements
・ I2C Interface
・ 12bit / 14bit Digital Output
・ Operating Current (100SPS): 0.15mA(Typ)
・ Magnetic Measurable Range: ±1200μT(Typ)
・ Magnetic Sensitivity: 0.042μT/LSB(Typ)
・ Maximum Exposed Field: 1000mT
・ Operating Temperature Range: -40℃ to +85℃

Xaxis

Z axis

Yaxis
2.0mm x 2.0mm x 1.0mm

Package

ASIC
Internal structure

Block diagram

PAD
COIL
Amorphous Wire

Structure of MI Element
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MI Sensor Features
MI sensors can detect minute magnetic fields at the pT(picoTesla)
level-10,000times more sensitive than conventional magnetic sensors.

MI Sensor

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Hall Type Sensor

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Comparison with the Competitor

Sensor Type

BM1422GMV
（Rohm）

AMI306
（Aichi Steel）

AKM

MI

MI

HALL

□

Package Size

□

□

[mm]

2.0 x 1.0t

2.0 x 1.0t

1.6 x 0.5t

[mA]

0.15

0.35

2.4

[msec]

0.5

0.5

7.0

[uT]

0.1

0.2

0.9

[uT]

+/- 1200

+/- 1200

+/- 4900

Temperature dependence of
Sensitivity
[%]

3.0

5.0

-

Temperature dependence
of Offset
[uT/deg]

0.1

0.3

-

Current Consumption
Response Speed
σ Noise
Dynamic Range

© 2016 ROHM Semiconductor Singapore Pte. Ltd.

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