VCNL4040

www.vishay.com

Vishay Semiconductors

Rev. 1.7, 04-Nov-2020

3

Document Number: 84274

For technical questions, contact: sensorstechsupport@vishay.com

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

BLOCK DIAGRAM

Notes

(1) Test condition: VDD = 3.3 V, temperature: 25 °C

(2) Maximum detection range to ambient light can be determined by ALS refresh time adjustment. Refer to table “ALS Resolution and Maximum

Detection Range”

(3) Based on IRED on / off duty ratio = 1/40, 1/80, 1/160, and 1/320

BASIC CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)

PARAMETER

TEST CONDITION

SYMBOL

MIN.

TYP.

MAX.

UNIT

Supply voltage

VDD

2.5

3.6

V

Supply current

Excluded LED driving

IDD

300

μA

Light condition = dark, VDD = 3.3 V

IDD (SD)

0.2

μA

I2C supply voltage

VPULL UP

1.8

3.6

V

ALS shut down

ALS disable, PS enable

IALSSD

200

μA

PS shut down

ALS enable, PS disable

IPSSD

260

μA

I2C signal input

Logic high

VDD = 3.3 V

VIH

1.55

V

Logic low

VIL

0.4

Logic high

VDD = 2.6 V

VIH

1.4

V

Logic low

VIL

0.4

Peak sensitivity wavelength of

ALS

λp

550

nm

Peak sensitivity wavelength of PS

λpps

940

nm

Full ALS counts

16-bit resolution

65 535

steps

Full PS counts

12-bit / 16-bit resolution

4096 / 65 535

steps

ALS sensing tolerance

White LED light source

± 10

%

Detectable

intensity

Minimum

IT = 640 ms, 1 step (1)(2)

0.0125

lx

Maximum

IT = 80 ms, 65 535 step (1)(2)

6553

ALS dark offset

IT = 80 ms, normal sensitivity (1)

03

steps

PS detection range

Kodak white card

0

200

mm

Operating temperature range

Tamb

-40

+85

°C

Cathode (sensor) voltage

2.5

3.6

V

IRED driving current

(3)

200

mA

GND

I2C bus logic

control

ALS

PD

PS

PD

LED driver

PD

buffer

LED_CATHODE

V

DD

SCLK

SDAT

INT

Anode

IRED

PD timing

controller

DSP

Oscilator

Temperature

compensation

Low pass filter

ALS

16-bits

data

buffer