VEML6075-SB - VISHAY - Datasheet.Directory

VEML6075

www.vishay.com Vishay Semiconductors

Not for New Designs

Rev. 1.3, 14-Jan-2019 1Document Number: 84304

For technical questions, contact: sensorstechsupport@vishay.com

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

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UVA and UVB Light Sensor with I2C Interface

DESCRIPTION

The VEML6075 senses UVA and UVB light and incorporates

photodiode, amplifiers, and analog / digital circuits into a

single chip using a CMOS process. When the UV sensor is

applied, it is able to detect UVA and UVB intensity to provide

a measure of the signal strength as well as allowing for UVI

measurement.

The VEML6075 provides excellent temperature compensation

capability for keeping the output stable under changing

temperature. VEML6075’s functionality is easily operated via

the simple command format of I

C (SMBus compatible)

interface protocol. VEML6075’s operating voltage ranges

from 1.7 V to 3.6 V. VEML6075 is packaged in a lead (Pb)-free

4 pin OPLGA package which offers the best market-proven

reliability.

FEATURES

• Package type: surface-mount

• Dimensions (L x W x H in mm): 2.0 x 1.25 x 1.0

• Integrated modules: ultraviolet sensor (UV), and

signal conditioning IC

• Converts solar UV light intensity to digital data

• Excellent UVA and UVB sensitivity

• Reliable performance of UV radiation

measurement under long time solar UV

exposure

• 16-bit resolution per channel

• UVA and UVB individual channel solution

• Low power consumption I2C protocol (SMBus compatible)

interface

• Package: OPLGA

• Temperature compensation: -40 °C to +85 °C

• Output type: I2C bus

• Operation voltage: 1.7 V to 3.6 V

• Material categorization: for definitions of compliance

please see www.vishay.com/doc?99912

APPLICATIONS

• Handheld device

• Notebook

• Consumer device

• Industrial and medical application

Note

(1) Adjustable through I2C interface

Note

(1) MOQ: minimum order quantity

PRODUCT SUMMARY

PART NUMBER

OPERATING

VOLTAGE RANGE

(V)

I2C BUS

VOLTAGE RANGE

(V)

PEAK SENSITIVITY

UVA, UVB

(nm)

RANGE OF SPECTRAL

BANDWIDTH Λ

0.5

(nm)

OUTPUT CODE

VEML6075 1.7 to 3.6 1.7 to 3.6 365, 330 ± 10 16 bit, I2C

ORDERING INFORMATION

ORDERING CODE PACKAGING VOLUME (1) REMARKS

VEML6075 Tape and reel MOQ: 2500 pcs 2.0 mm x 1.25 mm x 1.0 mm

VEML6075

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Rev. 1.3, 14-Jan-2019 2Document Number: 84304

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BLOCK DIAGRAM

Notes

(1) Nichia NCSU033X (365 nm)

(2) UVTOP310TO39HS (315 nm)

ABSOLUTE MAXIMUM RATINGS (Tamb = 25 °C, unless otherwise specified)

PARAMETER TEST CONDITION SYMBOL MIN. MAX. UNIT

Supply voltage VDD 03.6V

Operation temperature range Tamb -40 +85 °C

Storage temperature range Tstg -40 +85 °C

RECOMMENDED OPERATING CONDITIONS (Tamb = 25 °C, unless otherwise specified)

PARAMETER TEST CONDITION SYMBOL MIN. MAX. UNIT

Supply voltage VDD 1.7 3.6 V

Operation temperature range Tamb -40 +85 °C

I2C bus operating frequency f(I2CCLK) 10 400 kHz

PIN DESCRIPTIONS

PIN ASSIGNMENT SYMBOL TYPE FUNCTION

1 GND I Ground

2 SDAT I / O (open drain) I2C data bus data input / output

3SCLKII

2C digital bus clock input

DD I Power supply input

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

PARAMETER TEST CONDITION SYMBOL MIN. TYP. MAX. UNIT

Supply operation voltage VDD 1.7 - 3.6 V

Supply current VDD = 1.8 V IDD -480- μA

I2C signal input Logic high VDD = 3.3 V VIH 1.5 - - V

Logic low VIL --0.8

I2C signal input Logic high VDD = 2.6 V VIH 1.4 - - V

Logic low VIL --0.6

Operating temperature Tamb -40 - +85 °C

Shutdown current Light condition = dark;

VDD = 1.8 V, Tamb = 25 °C IDD (SD) - 800 - nA

UVA responsivity IT = 50 ms (1) - 0.93 - counts/μW/cm2

UVB responsivity IT = 50 ms (2) - 2.1 - counts/μW/cm2

Visible / infrared response W-LED / IRED (940 nm) - 0.5 < 1 %

VDD

SCLSDA

GND

VEML6075

State machine

I2C interface

UV-PD

Oscillator

Timing

controller

VDD

VEML6075 pin-out assignment

GND1

VDD

SDAT2

SCLK3

VEML6075

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Rev. 1.3, 14-Jan-2019 3Document Number: 84304

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Fig. 1 - I2C Bus Timing Diagram

I2C TIMING CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)

PARAMETER SYMBOL STANDARD MODE FAST MODE UNIT

MIN. MAX. MIN. MAX.

Clock frequency f(SMBCLK) 10 100 10 400 kHz

Bus free time between start and stop condition t(BUF) 4.7 - 1.3 - μs

Hold time after (repeated) start condition;

after this period, the first clock is generated t(HDSTA) 4.0 - 0.6 - μs

Repeated start condition setup time t(SUSTA) 4.7 - 0.6 - μs

Stop condition setup time t(SUSTO) 4.0 - 0.6 - μs

Data hold time t(HDDAT) - 3450 - 900 ns

Data setup time t(SUDAT) 250 - 100 - ns

I2C clock (SCK) low period t(LOW) 4.7 - 1.3 - μs

I2C clock (SCK) high period t(HIGH) 4.0 - 0.6 - μs

Clock / data fall time t(F) - 300 - 300 ns

Clock / data rise time t(R) - 1000 - 300 ns

I2C bus

clock

(SCLK)

(LOW)

(R)

(HDSTA)

(BUF)

(HDDAT)

(F)

(HIGH)

(SUSTA)

(SUDAT)

(SUSTO)

{

Stop Condition S

Start Condition

{

(LOSEXT)

(LOWMEXT)

SCL

ACK

SDA

ACK

Start Stop

(LOWMEXT)

I2C bus

data

(SDAT)

I2C bus

clock

(SCLK)

I2C bus

data

(SDAT)

VEML6075

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PARAMETER TIMING INFORMATION

Fig. 2 - I2C Bus Timing for Sending Word Command Format

Fig. 3 - I2C Timing for Receive Word Command Format

ACK by

VEML6075

ACK by

VEML6075

ACK by

VEML6075

ACK by

VEML6075

C bus

clock

(SCLK)

C bus

data

(SDAT)

C bus

clock

(SCLK)

C bus

data

(SDAT)

C bus slave address byte Command code

Start by

master

Stop by

master

Data byte low Data byte high

SA7 SA1SA2SA3SA4SA5SA6 SA7 SA1SA2SA3SA4SA5SA6 SA0

SA7 SA1SA2SA3SA4SA5SA6 SA0 SA7 SA1SA2SA3SA4SA5SA6 SA0

ACK by

VEML6075

ACK by

VEML6075

ACK by

VEML6075

I2C bus

clock

(SCLK)

I2C bus

data

(SDAT)

I2C bus slave address byte Command code

Start by

master

SA7 SA1SA2SA3SA4SA5SA6 SA7 SA1SA2SA3SA4SA5SA6 SA0

I2C bus

clock

(SCLK)

I2C bus

data

(SDAT)

Data byte low

Data byte high

ACK by

master

Start by

master

I2C bus slave address byte

I2C bus

clock

(SCLK)

I2C bus

data

(SDAT)

ACK by

master

Stop by

master

SA7 SA1SA2SA3SA4SA5SA6 SA7 SA1SA2SA3SA4SA5SA6 SA0

SA7 SA1SA2SA3SA4SA5SA6 SA0

VEML6075

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Rev. 1.3, 14-Jan-2019 5Document Number: 84304

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

Fig. 4 - Normalized Spectral Response Fig. 5 - Normalized Output vs. View Angle

APPLICATION INFORMATION

Pin Connection with the Host

The configuration and data registers of the VEML6075 are accessed via the I2C interface. The hardware schematic is shown

below in fig. 6.

The 0.1 μF capacitor near the VDD pin is used for power supply noise rejection. The 2.2 kΩ is suitable for the pull high resistor

of I2C.

Fig. 6 - Hardware Pin Connection Diagram

100

1000

10000

100

300 350 400 450 500 550 600

Axis Title

1st line

2nd line

Normalized Output (%)

λ- Wavelength (nm)

2nd line

UVB

UVA

UVcomp2 UVcomp1

100

-90 -60 -30 0 30 60 90

Axis Title

2nd line

Normalized Output (%)

Angle (deg)

2nd line

Cosine

UV-A

UV-B

100

1000

10000

1st line

2nd line

I2C bus data SDA

I2C bus clock SCL

SDA (2)

SCL (3)

GND (1)

VDD (4)

100 nF

1.7 V to 3.6 V

R2R1

Host

Micro Controller

VEML6075

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Digital Interface

The VEML6075 contains a CONF register (00h) used for operation control and parameter setup. Measurement results are stored

in four separate registers, one each for UVA, UVB, UVcomp1, and UVcomp2 (07h to 0Bh respectively). All registers are accessible

via I2C communication. Fig. 7 shows the basic I2C communication with the VEML6075. Each of the registers in the

VEML6075 are 16 bit wide, so 16 bit should be written when a write command is sent, and 16 bit should be read when a read

command is sent.

The built in I2C interface is compatible with I2C modes “standard” and “fast”: 100 kHz to 400 kHz

Fig. 7 - Command Protocol Format

Note

• Please note the repeat start condition when data is read from the sensor. A stop condition should not be sent here.

Slave Address and Function Description

VEML6075 uses 0x10 slave address for 7-bit I2C addressing protocol. VEML6075 has 16-bit resolution for each channel (UVA,

UVB, UVcomp1, and UVcomp2).

TABLE 1 - VEML6075 COMMAND CODE AND REGISTER DESCRIPTION

COMMAND

CODE

DATE BYTE

LOW / HIGH REGISTER NAME R / W DEFAULT VALUE FUNCTION DESCRIPTION

00h L UV_CONF R / W 0x00 UV integration time, function enable and disable

H Reserved R / W 0x00 Reserved

01h L Reserved R / W 0x00 Reserved

H Reserved R / W 0x00 Reserved

02h L Reserved R / W 0x00 Reserved

H Reserved R / W 0x00 Reserved

03h L Reserved R / W 0x00 Reserved

H Reserved R / W 0x00 Reserved

04h L Reserved R / W 0x00 Reserved

H Reserved R / W 0x00 Reserved

05h L Reserved R / W 0x00 Reserved

H Reserved R / W 0x00 Reserved

06h L Reserved R / W 0x00 Reserved

H Reserved R / W 0x00 Reserved

07h L UVA_Data R 0x00 UVA LSB output data

H UVA_Data R 0x00 UVA MSB output data

08h L Reserved R 0x00 Reserved

H Reserved R 0x00 Reserved

09h L UVB_Data R 0x00 UVB LSB output data

H UVB_Data R 0x00 UVB MSB output data

0Ah L UVCOMP1_Data R 0x00 UVcomp1 LSB output data

H UVCOMP1_Data R 0x00 UVcomp1 MSB output data

0Bh L UVCOMP2_Data R 0x00 UVcomp2 LSB output data

H UVCOMP2_Data R 0x00 UVcomp2 MSB output data

SSlave address

ACommand code AData byte low AData byte high A

17 811 1 818

Send Word ɦġWrite Command to VEML6075

Slave address

ACommand code A S Slave address

AData byte low AData byte high A P

1181171181811

Receive Word ɦġRead Data from VEML6075

S = start condition

P = stop condition

A = acknowledge

Shaded area = VEML6075 acknowledge

VEML6075

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Command Register Format

The VEML6075 has 16-bit registers used to set up the measurements as well as pick up the measurement results. The

description of each command format is shown in the following tables.

0Ch L ID R 0x26 Device ID LSB

H ID R 0x00 Device ID MSB

TABLE 2 - REGISTER UV_CONF DESCRIPTION

COMMANDBIT76543210

COMMAND BIT Description

Reserved 7 0

UV_IT 6 : 4 (0 : 0 : 0) = 50 ms, (0 : 0 : 1) = 100 ms, (0 : 1 : 0) = 200 ms, (0 : 1 : 1) = 400 ms, (1 : 0 : 0) = 800 ms,

(1 : 0 : 1) = reserved, (1 : 1 : 0) = reserved, (1 : 1 : 1) = reserved.

HD 3 0 = normal dynamic setting, 1 = high dynamic setting

UV_TRIG 2

0 = no active force mode trigger, 1 = trigger one measurement

With UV_AF = 1 the VEML6075 conducts one measurement every time the host writes UV_Trig = 1. This bit

returns to “0” automatically.

UV_AF 1 0 = active force mode disable (normal mode), 1 = active force mode enable

SD 0 0 = power on, 1 = shut down

TABLE 3 - REGISTER 00_H DESCRIPTION

COMMAND BIT Description

Reserved 7 : 0 Default = (0 : 0 : 0 : 0 : 0 : 0 : 0 : 0)

TABLE 4 - REGISTER 01_L TO 06_L AND 08_L; 01_H TO 06_H AND 08_H DESCRIPTION

COMMAND CODE: 0x01_H TO 0x06_H AND 0x08_H (0x01 TO 0x06 AND 0x08_H DATA BYTE HIGH)

Reserved 7 : 0 Default = (0 : 0 : 0 : 0 : 0 : 0 : 0 : 0)

TABLE 5 - READ OUT COMMAND CODES DESCRIPTION

UVA_DATA 0x07_L (0x07 data byte low) 7 : 0 0x00 to 0xFF, UVA LSB output data

0x07_H (0x07 data byte high) 7 : 0 0x00 to 0xFF, UVA MSB output data

UVB_DATA 0x09_L (0x09 data byte low) 7 : 0 0x00 to 0xFF, UVB LSB output data

0x09_H (0x09 data byte high) 7 : 0 0x00 to 0xFF, UVB MSB output data

UVCOMP1_DATA 0x0A_L (0x0A data byte low) 7 : 0 0x00 to 0xFF, UVcomp1 LSB output data

0x0A_H (0x0A data byte high) 7 : 0 0x00 to 0xFF, UVcomp1 MSB output data

UVCOMP2_DATA 0x0B_L (0x0B data byte low) 7 : 0 0x00 to 0xFF, UVcomp2 LSB output data

0x0B_H (0x0B data byte high) 7 : 0 0x00 to 0xFF, UVcomp2 MSB output data

0x0C_L (0x0C data byte low) 7 : 0 Default = 0x26, device ID LSB byte

0x0C_H (0x0C data byte high)

7 : 6

5 : 4

3 : 0

Company code = 00, (0 : 0),

slave address = 0x20,

version code (0 : 0 : 0 : 0) = VEML6075 CS,

device ID MSB byte

TABLE 1 - VEML6075 COMMAND CODE AND REGISTER DESCRIPTION

COMMAND

CODE

DATE BYTE

LOW / HIGH REGISTER NAME R / W DEFAULT VALUE FUNCTION DESCRIPTION

VEML6075

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Data Access

VEML6075 has 16-bit high resolution sensitivity for each UV channel. One byte is the LSB and the other byte is the MSB. The

host needs to follow the read word protocol as shown in fig. 7. The data format shows as below.

Note

• Data byte low represents LSB and data byte high represents MSB.

Data Auto-Memorization

VEML6075 keeps the last results read. These values will remain in the registers, and can be read from these registers, until the

device wakes up and a new measurement is made.

UV-Index Calculation

In order to use the result data to calculate the UV-Index, please refer to the “Designing the VEML6075 into an Application”

application note (www.vishay.com/doc?84339).

PACKAGE INFORMATION in millimeters

TABLE 6 - 16-BIT DATA FORMAT

VEML6075 16-BIT DATA FORMAT

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Data byte low

Data byte high

Receive byte Read data from VEML6075

Host action

VEML6075 response

SSlave address A Command code AData byte (LSB) A PData byte (MSB) N

Wr SSlave address Rd A

S = start condition

P = stop condition

A = acknowledge

N = no acknowledge

VEML6075

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Fig. 8 - VEML6075 A3OP Package Dimensions

SIDE VIEW

0.56

DIE

30 μm ± 10 μm

0.1

0.45

1 ± 0.10

TOP VIEW

XX’

1 4

2 3

1.00 ± 0.15

0.625 ± 0.15

2.00 ± 0.15

1.25 ± 0.15

X’ X’

1.100.45 ± 0.05

0.55 ± 0.05 1.0

0 to 0.04

0 to 0.02

0 to 0.05

0 to 0.06

0.25

0.70

0.1

0.35 ± 0.05

Package edge to edge

2 ± 0.15

2 3

0.35

0.1

0.7

0.5 0.40.6

PAD AND CIRCUIT LAYOUT REFERENCE

VEML6075

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RECOMMENDED INFRARED REFLOW

Soldering conditions which are based on J-STD-020 C.

Recommend Normal Solder Reflow is 235 °C to 255 °C

Fig. 9 - VEML6075 OPLGA Solder Reflow Profile Chart

RECOMMENDED IRON TIP SOLDERING CONDITION AND WARNING HANDLING

1. Solder the device with the following conditions:

1.1. Soldering temperature: 400 °C (max.)

1.2. Soldering time: 3 s (max.)

2. If the temperature of the method portion rises in addition to the residual stress between the leads, the possibility that an

open or short circuit occurs due to the deformation or destruction of the resin increases.

3. The following methods: VPS and wave soldering, have not been suggested for the component assembly.

4. Cleaning method conditions:

4.1. Solvent: methyl alcohol, ethyl alcohol, isopropyl alcohol

4.2. Solvent temperature < 45 °C (max.)

RECOMMENDED STORAGE AND REBAKING CONDITIONS

PARAMETER CONDITIONS MIN. MAX. UNIT

Storage temperature 5 50 °C

Relative humidity - 60 %

Open time - 168 h

Total time From the date code on the aluminized envelope (unopened) - 12 months

Rebaking Tape and reel: 60 °C - 22 h

Tube: 60 °C - 22 h

IR REFLOW PROFILE CONDITION

PARAMETER CONDITIONS TEMPERATURE TIME

Peak temperature 255 °C + 0 °C / - 5 °C (max.: 260 °C) 10 s

Preheat temperature range and timing 150 °C to 200 °C 60 s to 180 s

Timing within 5 °C to peak temperature - 10 s to 30 s

Timing maintained above temperature / time 217 °C 60 s to 150 s

Timing from 25 °C to peak temperature - 8 min (max.)

Ramp-up rate 3 °C/s (max.) -

Ramp-down rate 6 °C/s (max.) -

200

150

217

255

Temperature (°C)

Time (s)

Max. Temperature

(260 °C + 5 °C / - 5 °C)/10 s

Ramp-Down Rate

6 °C/s (max.)

Ramp-Up Rate

3 °C/s (max.)

Soldering Zone

60 s to 150 s

Ramp-Up Rate

3 °C/s (max.)

Pre-Heating Time

t2 - t1 = 60 s to 180 s

VEML6075

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4.3. Time: 3 min (min.)

VEML6075

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TAPE PACKAGING INFORMATION in millimeters

Fig. 10 - VEML6070 A3OP Package Carrier Tape Fig. 11 - Taping Direction

Fig. 12 - Reel Dimension

SIDE VIEW

DIMENSION OF CARRIER TAPE

0.28 ± 0.02

TOP VIEW

1.25 ± 0.10

5.50 ± 0.05 1.75 ± 0.10

12.00

+ 0.30

- 0.10

4.0 ± 0.14.0 ± 0.1 2.0 ± 0.05

Ø 1.5 ± 0.1

Ø 1.0 ± 0.05

R9 max.

2.58 ± 0.10

R9 max.

2.03 ± 0.10

PIN 1

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