BH1600FVC_10_技术文档

Ambient Light Sensor IC Series

Analog Current Output Type

Ambient Light Sensor IC

BH1600FVC

No.10046EBT04

●Descriptions

BH1600FVC is an analog current output ambient light sensor. BH1600FVC is the most suitable to obtain the ambient light

data for adjusting LCD and Keypad backlight of Mobile phone for power saving and better visibility

●Features

1) Compact surface mount package 3.0 × 1.6 mm

2) Spectral sensitivity close to human eyes sensitivity.

3) Output current in proportion to brightness.

4) Minimum supply voltage 2.4V

5) Built-in shutdown function

6) 2 steps controllable output current gain.

7) 1.8V logic input interface

●Applications

Mobile phone, LCD TV, PDP TV, Laptop PC, Portable game console, Digital camera, Digital video camera, Car navigation,

PDA, LCD display

●Absolute Maximum Ratings

Parameter

Supply Voltage

Symbol

Vmax

Topr

Limits

4.5

Units

V

Operating Temperature

Storage Temperature

Iout Current

-30～85

-40～100

7.5

℃

Tstg

℃

Ioutmax

Pd

mA

mW

Power Dissipation

260^※

※ 70mm × 70mm × 1.6mm glass epoxy board. Derating at 3.47mW/℃ for operating above Ta=25℃.

●Operating Conditions

Parameter

VCC Voltage

Symbol

Vcc

Min.

2.4

Typ.

3.0

Max.

3.6

Units

V

●Electrical Characteristics ( VCC = 3.0V, Ta = 25℃, unless otherwise noted )

Parameter

Supply Current

Symbol

Icc1

Min.

Typ.

64

Max.

90

Units

µA

Conditions

Ev=100 lx ( H-Gain Mode )

VGC1=VGC2=0 No Input Light

Ev=0 lx

※

39

-

Shutdown Current

Dark Current

Icc2sd

Idark

Iout

0.01

-

0.2

0.1

81

µA

-

µA

Light Current

39

-

60

µA

Ev=100 lx ( H-Gain Mode )

Peak Wave Length

λp

560

-

nm

Incandescent/Fluorescent

Light Current Ratio

rIF

-

1.0

2.9

-

times Ev=100 lx

Ev=100 lx, RL=220kΩ

Saturated Output Voltage

Vomax

2.6

3.0

V

※

( H-Gain Mode )

GC1, GC2 Input ‘L’ Voltage

GC1,GC2 Input ‘H’ Voltage

VIL

VIH

0

-

0.4

V

1.4

Vcc

Shutdown → H-Gain Mode

Ev=100lx

Wake-up Time

Gain Ratio

H-Gain Mode / L-Gain Mode

※ White LED is used as optical source

twu

-

64

128

10

µs

※

9.5

times Ev=100 lx

www.rohm.com

2010.03 - Rev.B

1/8

Technical Note

BH1600FVC

●Reference Data

100000

10000

1000

100

1.2

Fluorescent

Light

1

0.8

0.6

0.4

0.2

0

Incandescent

Light

H-Gain

L-Gain

Halogen

Light

10

Kripton Light

1

Artifical Sun

Light

0.1

0.01

0.001

White LED

0.01

0

1

100

10,000

1,000,000

400

500

600

700

800

900 1000 1100

0

0.5

1

1.5

2

Illuminance [ lx ]

Ratio

Wavelength [ nm ]

Fig.3 Illuminance – IOUT

Characteristics

Fig.2 Light Source Dependency

(Fluorescent Light is set to '1')

Fig.1 Spectral Response

1.2

1

1.2

100

10

1

1pin

0.8

0.6

0.4

0.2

0

0.8

暗電流温特

-

+

受信指向角特性

1

-

0.6

H-Gain

1pin

0.1

-

L-Gain

SD

0.4

-

+

0.01

0.001

+

0.2

+

0

-30

0

30

60

90

-90

-60

-30

0

30

60

90

-90

-60

-30

0

30

60

90

Ta [ ℃ ]

Angle [ deg ]

Fig.4 Directional Characteristics 1

Fig.6 Ta – IOUT (0 lx)

Fig.5 Directional Characteristics 2

100

10

1

1.4

1.2

1

1.4

1.2

1

0.8

0.6

0.4

0.2

0.8

0.6

0.4

0.2

0

H-Gain

0.1

L-Gain

SD

0.01

0.001

0

2

-30

0

30

Ta [ ℃ ]

60

90

-30

0

30

60

90

2.5

3

3.5

4

Ta [

]

℃

VCC [ V ]

Fig.7 Ta – ICC (0 lx)

Fig.8 IOUT Temperature dependency(100 lx)

Fig.9 IOUT VCC dependency

10000

1000

100

10

L-Gain

H-Gain

1

100

1000

Illuminance [ lx ]

10000

Fig.10 Illuminance – Wake up Time

www.rohm.com

2010.03 - Rev.B

2/8

Technical Note

BH1600FVC

●Block Diagram

VCC

GC1

GC2

Logic

PD

Current

Amp

IOUT

C1

R1

GND

●Block Diagram Descriptions

●PD

Photo diode close to human eyes sensitivity.

●Current AMP

To amplify Photo diode current ( H-Gain / L-Gain )

Gain controllable in 2 steps by input voltage from GC1 and GC2.

●Logic

Logic block for mode setting by input voltage from GC1 and GC2

●Mode Setting

GC2

GC1

Mode

0

1

0

1

0

1

Shutdown

H-Gain Mode

L-Gain Mode

Test Mode ( Input prohibition )

www.rohm.com

2010.03 - Rev.B

3/8

Technical Note

BH1600FVC

●External parts Setting

1) Gain setting of BH1600FVC

Please select the best gain controlled by 5 and 6pin based on the required illuminance range.

The reference is as follows.

Illuminance detection range [lx]

Gain Mode

~ 500

H-Gain Mode

L-Gain Mode

~50000

This device will be mounted under the optical window in actual designing. Therefore, there is a possibility that the

illuminace to ALS( Ambient Light Sensor) will be less than the illuminance on the final product surface.

Please consider the attenuation of light through the optical window.

It is possible to detect illuminance up to about 5000 lx even in the H-Gain mode. However, the maximum output current

is about 3mA in this case. If you want to minimize consumption current, please use the L-Gain mode as much as possible.

Please set output resistance value( R1) within the range of 1 kΩ ~ 1MΩ which needs to be smaller than the input

impedance of the next circuit.

2) Approximate formula of IOUT output voltage in each Gain Mode

(1) H-Gain mode

The output voltage is calculated as below.

Viout= 0.6 x 10^-6x Ev x R1

Viout is IOUT output voltage [V]. Ev is an illuminance of the ALS surface [lx].

R1 is IOUT output resistor[Ω].

(For example) In case you want to convert the illuminance value up to 500 lx by ADC.

If the maximum voltage of ADC input is 2V, output resistor value will be as below.

R1 = Viout/(0.6 x 10^-6x Ev)

= 2 /(0.6 x 10^-6x 500) = 6667[Ω]

⇒6.8[kΩ]

(2) L-Gain mode

The output voltage is calculated as follows.

Viout= 0.063 x 10^-6x Ev x R1

3) C1

(1) To reject the flicker light..

In case IOUT output is R1 only and an ALS receives the artificial lights such as fluorescent lamps and incandescent

lamps synchronized with 50/60 Hz of AC power supplies, the output current has a ripple. If you want to reject this ripple,

please add C1 to R1 in parallel. Please set it to C1 x R1 = about 0.1 as a time constant.

(2) To control backlight smoothly by using illuminance value.

C1 is effective to control backlight smoothly for a rapid changing of the illuminance. In this case, please set it to C1 x R1

= about 1 ~ 10 as a time constant. It is not necessary if you average illuminance value with software to change backlight

smoothly.

Please note that the rise time becomes slow at power-on and recovery from shutdown mode to operation mode.

www.rohm.com

2010.03 - Rev.B

4/8

Technical Note

BH1600FVC

●Terminal Descriptions

Pin No.

Pin Name

Equivalent Circuit

Function

VCC

This terminal outputs current depending on

illuminance level.

Use this pin by putting resistor between

GND.

1

IOUT

2

3

4

GND

VCC

NC

GND Terminal

Power Supply Terminal

NC( Non connection)Terminal

Open or short to GND

VCC

5

GC1

Mode Setting Terminal 1

VCC

6

GC2

Mode Setting Terminal 2

www.rohm.com

2010.03 - Rev.B

5/8

Technical Note

BH1600FVC

●Package Outlines

Lot No.

Production

code

WSOF6 ( Unit : mm )

●Optical design for the device

0.8 mm

1.3 mm

Min.0.4 mm

PD area ( 0.25 mm x 0.3 mm )

Please design an optical window to have the focused

light within this area.

Min.0.4 mm Min.0.4 mm

www.rohm.com

2010.03 - Rev.B

6/8

Technical Note

BH1600FVC

●Notes for use

1) Absolute Maximum Ratings

An excess in the absolute maximum ratings, such as supply voltage ( Vmax ), temperature range of operating conditions

( Topr ), etc., can break down devices, thus making impossible to identify breaking mode such as a short circuit or an open

circuit. If any special mode exceeding the absolute maximum ratings is assumed, consideration should be given to take

physical safety measures including the use of fuses, etc.

2) GND voltage

Make setting of the potential of the GND terminal so that it will be maintained at the minimum in any operating state.

Furthermore, check to be sure no terminals are at a potential lower than the GND voltage including an actual electric

transient.

3) Short circuit between terminals and erroneous mounting

In order to mount ICs on a set PCB, pay thorough attention to the direction and offset of the ICs. Erroneous mounting can

break down the ICs. Furthermore, if a short circuit occurs due to foreign matters entering between terminals or between

the terminal and the power supply or the GND terminal, the ICs can break down.

4) Operation in strong electromagnetic field

Be noted that using ICs in the strong electromagnetic field can malfunction them.

5) Inspection with set PCB

On the inspection with the set PCB, if a capacitor is connected to a low-impedance IC terminal, the IC can suffer stress.

Therefore, be sure to discharge from the set PCB by each process. Furthermore, in order to mount or dismount the set

PCB to/from the jig for the inspection process, be sure to turn OFF the power supply and then mount the set PCB to the jig.

After the completion of the inspection, be sure to turn OFF the power supply and then dismount it from the jig. In addition,

for protection against static electricity, establish a ground for the assembly process and pay thorough attention to the

transportation and the storage of the set PCB.

6) Input terminals

In terms of the construction of IC, parasitic elements are inevitably formed in relation to potential. The operation of the

parasitic element can cause interference with circuit operation, thus resulting in a malfunction and then breakdown of the

input terminal. Therefore, pay thorough attention not to handle the input terminals; such as to apply to the input terminals a

voltage lower than the GND respectively, so that any parasitic element will operate. Furthermore, do not apply a voltage to

the input terminals when no power supply voltage is applied to the IC. In addition, even if the power supply voltage is

applied, apply to the input terminals a voltage lower than the power supply voltage or within the guaranteed value of

electrical characteristics.

7) Thermal design

Perform thermal design in which there are adequate margins by taking into account the permissible dissipation (pd) in

actual states of use.

8) Treatment of package

Dusts or scratch on the photo detector may affect the optical characteristics. Please handle it with care.

9) Rush current

When power is first supplied to this IC, rush current may flow instantaneously. Because it is possible that the charge

current to the parasitic capacitance of internal photo diode or the internal logic may be unstable.

Therefore, give special consideration to power coupling capacitance, power wiring, width of GND wiring, and routing of

connections.

10) The exposed central pad on the back side of the package

There is an exposed central pad on the back side of the package. But please do it non connection. ( Don't

solder, and don't do electrical connection ) Please mount by Footprint dimensions described in the Jisso

Information for WSOF6. This pad is GND level, therefore there is a possibility that LSI malfunctions and

heavy-current is generated.

www.rohm.com

2010.03 - Rev.B

7/8

Technical Note

BH1600FVC

●Ordering part number

B H

1

6

0

F

V

C

-

T

R

Part No.

1600

Package

FVC: WSOF6

Packaging and forming specification

TR: Embossed tape and reel

(WSOF6)

WSOF6

1.6 0.1

(MAX1.8 include BURR)

Tape

Embossed carrier tape

3000pcs

6

5

4

5

6

Quantity

TR

Direction

of feed

The direction is the 1pin of product is at the upper right when you hold

reel on the left hand and you pull out the tape on the right hand

(

)

(1.2)

(1.4)

1pin

2

3

2

1

3

1PIN MARK

0.3

0.145 0.05

S

0.08

0.22 0.05

S

Direction of feed

Order quantity needs to be multiple of the minimum quantity.

0.5

M

0.08

Reel

(Unit : mm)

∗

www.rohm.com

2010.03 - Rev.B

8/8

Notice

N o t e s

No copying or reproduction of this document, in part or in whole, is permitted without the

consent of ROHM Co.,Ltd.

The content speciﬁed herein is subject to change for improvement without notice.

The content speciﬁed herein is for the purpose of introducing ROHM's products (hereinafter

"Products"). If you wish to use any such Product, please be sure to refer to the speciﬁcations,

which can be obtained from ROHM upon request.

Examples of application circuits, circuit constants and any other information contained herein

illustrate the standard usage and operations of the Products. The peripheral conditions must

be taken into account when designing circuits for mass production.

Great care was taken in ensuring the accuracy of the information speciﬁed in this document.

However, should you incur any damage arising from any inaccuracy or misprint of such

information, ROHM shall bear no responsibility for such damage.

The technical information speciﬁed herein is intended only to show the typical functions of and

examples of application circuits for the Products. ROHM does not grant you, explicitly or

implicitly, any license to use or exercise intellectual property or other rights held by ROHM and

other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the

use of such technical information.

The Products speciﬁed in this document are intended to be used with general-use electronic

equipment or devices (such as audio visual equipment, ofﬁce-automation equipment, commu-

nication devices, electronic appliances and amusement devices).

The Products speciﬁed in this document are not designed to be radiation tolerant.

While ROHM always makes efforts to enhance the quality and reliability of its Products, a

Product may fail or malfunction for a variety of reasons.

Please be sure to implement in your equipment using the Products safety measures to guard

against the possibility of physical injury, ﬁre or any other damage caused in the event of the

failure of any Product, such as derating, redundancy, ﬁre control and fail-safe designs. ROHM

shall bear no responsibility whatsoever for your use of any Product outside of the prescribed

scope or not in accordance with the instruction manual.

The Products are not designed or manufactured to be used with any equipment, device or

system which requires an extremely high level of reliability the failure or malfunction of which

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More detail product informations and catalogs are available, please contact us.

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R1010

A


型号：	BH1600FVC_10
厂家：	ROHM
描述：	Analog Current Output Type Ambient Light Sensor IC 模拟电流输出型环境光传感器IC 传感器
文件：	总9页 (文件大小：266K)
中文：	中文翻译
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