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VCNL4020C

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High Resolution Digital Biosensor for Wearable Applications

With I2C Interface

DESCRIPTION

The VCNL4020C is a fully integrated biosensor and ambient

light sensor. Fully integrated means that the infrared emitter

is included in the package. It has 16 bit resolution. It

includes a signal processing IC and features standard I2C

communication interface. It features an interrupt function.

APPLICATIONS

• Wearables

• Health monitoring

•Pulse oximetry

FEATURES

• Package type: surface-mount

• Package form: SMD

• Dimensions (L x W x H in mm): 4.90 x 2.40 x 0.83

• Integrated modules: infrared emitter (IRED),

ambient light sensor (ALS), photo diode (PD),

and signal conditioning IC

• Interrupt function

• Supply voltage range VDD: 2.5 V to 3.6 V

• Supply voltage range IR anode: 2.5 V to 5 V

• Communication via I2C interface

•I

2C bus H-level range: 1.7 V to 5 V

• Floor life: 72 h, MSL 4, according to J-STD-020

• Low stand by current consumption: 1.5 μA

• Material categorization: for definitions of compliance

please see www.vishay.com/doc?99912

OPTICAL BIOSENSORS FUNCTION

• Built-in infrared emitter and broader sensitivity

photodiode allows to also work with green and red LEDs

• 16 bit effective resolution ensures excellent cross talk

immunity

• Programmable LED drive current from 10 mA to 200 mA in

10 mA steps

• Excellent ambient light suppression through signal

modulation

AMBIENT LIGHT FUNCTION

• Built-in ambient light photo-pin-diode with

close-to-human-eye sensitivity

• 16 bit dynamic range from 0.25 lx to 16 klx

• 100 Hz and 120 Hz flicker noise rejection

Note

(1) Adjustable through I2C interface

7 nc

6 nc

9 GND

8 GND

10 IR cathode

IR anode 1

SDA 2

INT 3

SCL 4

VDD 5

22620

PRODUCT SUMMARY

PART

NUMBER

OPERATING

VOLTAGE

RANGE

(V)

I2C BUS

VOLTAGE

RANGE

(V)

LED PULSE

CURRENT (1)

(mA)

AMBIENT

LIGHT

RANGE

(lx)

SPECTRAL

BANDWIDTH

RANGE

λ0.5 (nm)

OUTPUT

CODE

ADC RESOLUTION

BIOSENSOR / AMBIENT

LIGHT SENSOR

VCNL4020C 2.5 to 3.6 1.7 to 5 10 to 200 0.25 to 16 383 550 to 970 16 bit, I2C 16 bit / 16 bit

VCNL4020C

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Note

(1) MOQ: minimum order quantity

ORDERING INFORMATION

ORDERING CODE PACKAGING VOLUME (1) REMARKS

VCNL4020C-GS08 Tape and reel MOQ: 3300 pcs 4.90 mm x 2.40 mm x 0.83 mm

VCNL4020C-GS18 MOQ: 13 000 pcs

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

PARAMETER TEST CONDITION SYMBOL MIN. MAX. UNIT

Supply voltage VDD -0.3 5.5 V

Operation temperature range Tamb -25 +85 °C

Storage temperature range Tstg -25 +85 °C

Total power dissipation Tamb ≤ 25 °C Ptot -50mW

Junction temperature Tj-100°C

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 voltage IR anode 2.5 - 5 V

I2C bus H-level range 1.7 - 5 V

INT H-level range 1.7 - 5 V

INT low voltage 3 mA sink current - - 0.4 V

Current consumption Standby current,

no LED-operation -1.52μA

Current consumption

pulse mode incl. LED

(averaged)

2 measurements per second,

LED current 20 mA -5-μA

250 measurements per second,

LED current 20 mA - 520 - μA

2 measurements per second,

LED current 200 mA -35-μA

250 measurements per second,

LED current 200 mA -4-mA

Current consumption ambient

light mode

2 measurements per second

averaging = 1 -2.5-μA

8 measurements per second

averaging = 1 -10-μA

2 measurements per second

averaging = 64 - 160 - μA

8 measurements per second

averaging = 64 - 640 - μA

Ambient light resolution Digital resolution (LSB count ) - 0.25 - lx

Ambient light output EV = 100 lx

averaging = 64 - 400 - counts

I2C clock rate range fSCL - - 3400 kHz

VCNL4020C

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CIRCUIT BLOCK DIAGRAM

Note

• nc must not be electrically connected

Pads 6 and 7 are only considered as solder pads

TEST CIRCUIT

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

Fig. 1 - Idle Current vs. Ambient Temperature

Fig. 2 - Idle Current vs. VDD

Fig. 3 - Proximity Value vs. Distance

Fig. 4 - Forward Current vs. Temperature

10 IR cathode

9 GND

8 GND

6 nc

7 nc

IR anode 1

SDA 2

INT 3

SCL 4

VDD 5

IRED

VCNL4020C

ASIC

Ambi

d = 20 mm

Kodak gray card

(18 % reectivity)

VCNL4020C IRED

30 mm x 30 mm

2.4

1.0

1.2

1.4

1.8

1.6

2.0

2.2

110- 50

- 30

10 50 90

- 10

30 70

IDD - Supply Current Idle Mode (μA)

Tamb - Ambient Temperature (°C)22301

= 3.6 V

= 3.5 V

= 3.3 V

= 3.1 V V

= 2.5 V

= 2.7 V

= 2.9 V

2.4

1.0

1.2

1.4

1.6

1.8

2.0

2.2

3.82.4 2.6 2.8 3.0 3.2 3.4 3.6

- Supply Current Idle Mode (μA)

- Supply Voltage (V)

22302

100 °C

80 °C

55 °C

25 °C

-10 °C

-40 °C

100 000

100

1000

10 000

0.1

10 100

Proximity Value (cts)

Distance to Reecting Card (mm)

LED current 200 mA

Media: Kodak gray card

Mod. frequency = 390 kHz

LED current 100 mA

LED current 20 mA

250

100

150

200

140-60

-20

20 60 100

IRED

- Forward Current IRED (mA)

amb

- Ambient Temperature (°C)

22304

20 mA

40 mA

60 mA

80 mA

100 mA

120 mA

140 mA

160 mA

180 mA

200 mA

VIRED = 2.5 V

VCNL4020C

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Fig. 5 - Relative Radiant Intensity vs. Wavelength

Fig. 6 - Relative Radiant Intensity vs. Angular Displacement

Fig. 7 - Relative Spectral Sensitivity vs. Wavelength

(Biosensor)

Fig. 8 - Relative Radiant Sensitivity vs. Angular Displacement

(Proximity Sensor)

Fig. 9 - Ambient Light Value vs. Illuminance

Fig. 10 - Relative Spectral Sensitivity vs. Wavelength

(Ambient Light Sensor)

1.1

0.2

0.4

0.6

0.8

0.9

1.0

0.1

0.3

0.5

0.7

1050750

800

850 900 950 1000

e, rel

- Relative Radiant Intensity

λ - Wavelength (nm)

22305

= 100 mA

0° 20°

40°

60°

80°

0.6

0.7

0.8

0.9

1.0

00.10.20.30.40.5

rel

- Relative Radiant Intensity

22306

ϕ - Angular Displacement

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

1.1

400 500 600 700 800 900 1000 1100

S(λ)rel - Relative Spectral Sensitivity

λ- Wavelength (nm)

0° 20°

40°

60°

80°

0.6

0.7

0.8

0.9

1.0

00.10.20.30.40.5

Srel - Relative Sensitivity

22308

ϕ - Angular Displacement

100 000

100

1000

10 000

Ambient Light Signal (cts)

EV - Illuminance (lx)

0.1 1 10 100 1000 10 000

0.2

0.4

0.6

0.8

1.0

1100400

500

600 700 800 900 1000

S(λ)rel - Relative Spectral Sensitivity

λ - Wavelength (nm)

VCNL4020C

Human eye

VCNL4020C

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Fig. 11 - Relative Radiant Sensitivity vs. Angular Displacement

(Ambient Light Sensor)

APPLICATION INFORMATION

The digital biosensor VCNL4020C needs just one decoupling-C at VDD if connected to a regulated power supply.

IR cathode needs no external connection as the connection to the driver is done internally, but this allows also for adding

external LEDs / IREDs to the driver.

1. Application Circuit

Fig. 12 - Application Circuit

(x) = Pin Number

Note

• The interrupt pin is an open drain output. The needed pull-up resistor may be connected to the same supply voltage as the application

controller and the pull-up resistors at SDA / SCL. Proposed value R2 should be >1 kΩ , e.g. 10 kΩ to 100 kΩ.

Proposed value for R3 and R4, e.g. 2.2 kΩ to 4.7 kΩ, depend also on the I2C bus speed.

For detailed description about set-up and use of the interrupt as well as more application related information see AN: “Designing

VCNL4020C into an Application”.

0° 20°

40°

60°

80°

0.6

0.7

0.8

0.9

1.0

00.10.20.30.40.5

Srel - Relative Sensitivity

22311

Vertical

Horizontal

ϕ - Angular Displacement

INT (3)

SCL (4)

SDA (2)

GND (8, 9)

VDD (5)

IR anode (1)

470 nF

VCNL4020C

I2C bus clock SCL

I2C bus data SDA

INT (3)

SCL (4)

SDA (2)

GND (8, 9)

VDD (5)

IR anode (1)

C1 C2

C3C4

100 nF

100 nF10 μF

22 μF

10R

GPIO

2.5 V

5.0 V

1.7 V

5.0 V

R2 R3 R4

IR cathode (10)

VSMD66694

RED

(4)

(1)

(2)

(3)

VCNL4020C

Host

Micro Controller

2.5 V

3.6 V

2.5 V

3.6 V

VCNL4020C

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2. I2C Interface

The VCNL4020C contains seventeen 8 bit registers for operation control, parameter setup and result buffering. All registers are

accessible via I2C communication. Figure 13 shows the basic I2C communication with VCNL4020C.

The built in I2C interface is compatible with all I2C modes (standard, fast and high speed).

I2C H-level range = 1.7 V to 5 V.

Please refer to the I2C specification from NXP for details.

Fig. 13 - Send Byte/Receive Byte Protocol

Device Address

The VCNL4020C has a fix slave address for the host

programming and accessing selection. The predefined 7 bit

I2C bus address is set to 0010 011 = 13h. The least

significant bit (LSB) defines read or write mode. Accordingly

the bus address is set to 0010 011x = 26h for write, 27h for

read.

VCNL4020C has seventeen user accessible 8 bit registers.

The register addresses are 80h (register #0) to 90h

(register #16).

The register #0 is for starting ambient light or biosensor measurements. This register contains 2 flag bits for data ready

indication.

Note

• With setting bit 3 and bit 4 at the same write command, a simultaneously measurement of ambient light and biosensor is done. Beside als_en

and / or bs_en first selftimed_en needs to be set. On-demand measurement modes are disabled if selftimed_en bit is set. For the

selftimed_en mode changes in reading rates (reg #4 and reg #2) can be made only when b0 (selftimed_en bit) = 0. For the als_od mode

changes to the reg #4 can be made only when b4 (als_od bit) = 0; this is to avoid synchronization problems and undefined states between

the clock domains. In effect this means that it is only reasonable to change rates while no selftimed conversion is ongoing.

SSlave address

Receive byte Read data from VCNL4020C

ARegister address A

Wr P

SSlave address PA

AData byte

Send byte Write command to VCNL4020C

S = start condition

P = stop condition

A = acknowledge

Host action

VCNL4020C response

SSlave address A Register address A

Wr P

Data byte A

TABLE 1 - COMMAND REGISTER #0

Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0

config_lock als_data_rdy bs_data_rdy als_od bs_od als_en bs_en selftimed_en

Description

config_lock Read only bit. Value = 1

als_data_rdy Read only bit. Value = 1 when ambient light measurement data is available in the result registers. This bit

will be reset when one of the corresponding result registers (reg #5, reg #6) is read.

bs_data_rdy Read only bit. Value = 1 when biosensor measurement data is available in the result registers. This bit

will be reset when one of the corresponding result registers (reg #7, reg #8) is read.

als_od

R/W bit. Starts a single on-demand measurement for ambient light. If averaging is enabled, starts a

sequence of readings and stores the averaged result. Result is available at the end of conversion for

reading in the registers #5(HB) and #6(LB).

bs_od R/W bit. Starts a single on-demand measurement for biosensor.

Result is available at the end of conversion for reading in the registers #7(HB) and #8(LB).

als_en R/W bit. Enables periodic als measurement

bs_en R/W bit. Enables periodic biosensor measurement

selftimed_en R/W bit. Enables state machine and LP oscillator for self timed measurements; no measurement is

performed until the corresponding bit is set

VCNL4020C

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Note

• If self_timed measurement is running, any new value written in this register will not be taken over until the mode is actualy cycled.

The value is adjustable in steps of 10 mA from 0 mA to 200 mA.

This register also contains information about the used device fuse program ID.

TABLE 2 - PRODUCT ID REVISION REGISTER #1

Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0

Product ID Revision ID

Description

Product ID Read only bits. Value = 2

Revision ID Read only bits. Value = 1

TABLE 3 - BIOSENSOR RATE REGISTER #2

Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0

n/a Rate of biosensor Measurement (no. of

measurements per second)

Description

Biosensor rate

R/W bits.

000 - 1.95 measurements/s (DEFAULT)

001 - 3.90625 measurements/s

010 - 7.8125 measurements/s

011 - 16.625 measurements/s

100 - 31.25 measurements/s

101 - 62.5 measurements/s

110 - 125 measurements/s

111 - 250 measurements/s

TABLE 4 - LED CURRENT REGISTER #3

Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0

Fuse prog ID LED current value

Description

Fuse prog ID Read only bits.

Information about fuse program revision used for initial setup/calibration of the device.

LED current value

R/W bits. LED current = Value (dec.) x 10 mA.

Valid Range = 0 to 20d. e.g. 0 = 0 mA, 1 = 10 mA, …., 20 = 200 mA (2 = 20 mA = DEFAULT)

LED Current is limited to 200 mA for values higher as 20d.

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Note

• If self_timed measurement is running, any new value written in this register will not be taken over until the mode is actualy cycled.

The result is a 16 bit value. The high byte is stored in register #5 and the low byte in register #6.

TABLE 5 - AMBIENT LIGHT PARAMETER REGISTER #4

Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0

Cont. conv.

mode als_rate Auto offset

compensation

Averaging function

(number of measurements per run)

Description

Cont. conversion mode

R/W bit. Continuous conversion mode.

Enable = 1; Disable = 0 = DEFAULT

This function can be used for performing faster ambient light measurements. This mode should only be

used with ambient light on-demand measurements. Do not use with self-timed mode. Please refer to the

application information chapter 3.3 for details about this function.

Ambient light measurement rate

R/W bits. Ambient light measurement rate

000 - 1 samples/s

001 - 2 samples/s = DEFAULT

010 - 3 samples/s

011 - 4 samples/s

100 - 5 samples/s

101 - 6 samples/s

110 - 8 samples/s

111 - 10 samples/s

Auto offset compensation

R/W bit. Automatic offset compensation.

Enable = 1 = DEFAULT; Disable = 0

In order to compensate a technology, package or temperature related drift of the ambient light values

there is a built in automatic offset compensation function.

With active auto offset compensation the offset value is measured before each ambient light

measurement and subtracted automatically from actual reading.

Averaging function

R/W bits. Averaging function.

Bit values sets the number of single conversions done during one measurement cycle. Result is the

average value of all conversions.

Number of conversions = 2decimal_value e.g. 0 = 1 conv., 1 = 2 conv, 2 = 4 conv., ….7 = 128 conv.

DEFAULT = 32 conv. (bit 2 to bit 0: 101)

TABLE 6 - AMBIENT LIGHT RESULT REGISTER #5

Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0

Description

Read only bits. High byte (15:8) of ambient light measurement result

TABLE 7 - AMBIENT LIGHT RESULT REGISTER #6

Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0

Description

Read only bits. Low byte (7:0) of ambient light measurement result

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The result is a 16 bit value. The high byte is stored in register #7 and the low byte in register #8.

TABLE 8 - BIOSENSOR RESULT REGISTER #7

Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0

Description

Read only bits. High byte (15:8) of biosensor measurement result

TABLE 9 - BIOSENSOR RESULT REGISTER #8

Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0

Description

Read only bits. Low byte (7:0) of biosensor measurement result

TABLE 10 - INTERRUPT CONTROL REGISTER #9

Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0

Int count exceed n/a INT_BS_

ready_EN

INT_ALS_

ready_EN INT_THRES_EN INT_THRES_

SEL

Description

Int count exceed

R/W bits. These bits contain the number of consecutive measurements needed above/below the

threshold

000 - 1 count = DEFAULT

001 - 2 count

010 - 4 count

011 - 8 count

100 -16 count

101 - 32 count

110 - 64 count

111 - 128 count

INT_BS_ready_EN R/W bit. Enables interrupt generation at biosensor data ready

INT_ALS_ ready_EN R/W bit. Enables interrupt generation at ambient data ready

INT_THRES_EN R/W bit. Enables interrupt generation when high or low threshold is exceeded

INT_THRES_SEL R/W bit. If 0: thresholds are applied to biosensor measurements

If 1: thresholds are applied to als measurements

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Register address = 8Ah and 8Bh. These registers contain the low threshold value. The value is a 16 bit word. The high byte is

stored in register #10 and the low byte in register #11.

Register address = 8Ch and 8Dh. These registers contain the high threshold value. The value is a 16 bit word. The high byte is

stored in register #12 and the low byte in register #13.

Register address = 8Eh. This register contains information about the interrupt status for either biosensor or ALS function and

indicates if high or low going threshold exceeded.

Note

• Once an interrupt is generated the corresponding status bit goes to 1 and stays there unless it is cleared by writing a 1 in the corresponding

bit. The int pad will be pulled down while at least one of the status bit is 1.

TABLE 11 - LOW THRESHOLD REGISTER #10

Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0

Description

R/W bits. High byte (15:8) of low threshold value

TABLE 12 - LOW THRESHOLD REGISTER #11

Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0

Description

R/W bits. Low byte (7:0) of low threshold value

TABLE 13 - HIGH THRESHOLD REGISTER #12

Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0

Description

R/W bits. High byte (15:8) of high threshold value

TABLE 14 - HIGH THRESHOLD REGISTER #13

Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0

Description

R/W bits. Low byte (7:0) of high threshold value

TABLE 15 - INTERRUPT STATUS REGISTER #14

Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0

n/a int_bs_ready int_als_ready int_th_low int_th_hi

Description

int_bs_ready R/W bit. Indicates a generated interrupt for biosensor

int_als_ready R/W bit. Indicates a generated interrupt for als

int_th_low R/W bit. Indicates a low threshold exceed

int_th_hi R/W bit. Indicates a high threshold exceed

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Note

• The settings for best performance will be provided by Vishay. With first samples this is evaluated to:

Delay time = 0; dead time = 1 and BS frequency = 00. With that register #15 should be programmed with 1 (= default value).

This register is not intended to be used by customer.

3. IMPORTANT APPLICATION HINTS AND EXAMPLES

3.1 Receiver standby mode

In standby mode the receiver has the lowest current consumption of about 1.5 μA. In this mode only the I2C interface is active.

This is always valid, when there are no measurement demands executed. Also the current sink for the LED is inactive, so there

is no need for changing register #3 (LED current).

3.2 Data Read

In order to get a certain register value, the register has to be addressed without data like shown in the following scheme. After

this register addressing, the data from the addressed register is written after a subsequent read command.

Fig. 14 - Send Byte / Receive Byte Protocol

The stop condition between these write and read sequences is not mandatory. It works also with a repeated start condition.

Note

• For reading out 2 (or more) subsequent registers like the result registers, it is not necessary to address each of the registers separately. After

one read command the internal register counter is increased automatically and any subsequent read command is accessing the next

TABLE 16 - BIOSENSOR MODULATOR TIMING ADJUSTMENT #15

Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0

Modulation delay time Biosensor frequency Modulation dead time

Description

Modulation delay time

R/W bits. Setting a delay time between LED signal and detectors input signal evaluation.

This function is for compensation of delays from LED and photo diode. Also in respect to the possibility

for setting different proximity signal frequency. Correct adjustment is optimizing measurement signal

level. (DEFAULT = 0)

Biosensor frequency

R/W bits. Setting the biosensor test signal frequency

The biosensor measurement is using a square signal as measurement signal. Four different values are

possible:

00 = 390.625 kHz (DEFAULT)

01 = 781.25 kHz

10 = 1.5625 MHz

11 = 3.125 MHz

Modulation dead time

R/W bits. Setting a dead time in evaluation of LED signal at the slopes of the signal. (DEFAULT = 1)

This function is for reducing of possible disturbance effects.

This function is reducing signal level and should be used carefully.

SSlave address

Receive byte Read data from VCNL4020C

ARegister address AWr P

SSlave address PA

AData byte

S = start condition

P = stop condition

A = acknowledge

Host action

VCNL4020C response

VCNL4020C

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Example: read register “Ambient Light Result Register” #5 and #6:

Addressing:command: 26h, 85h (VCNL4020C_I2C_Bus_Write_Adr., Ambient Light Result Register #5 [85])

Read register #5:command: 27h, data (VCNL4020C_I2C_Bus_Read_Adr., {High Byte Data of Ambient Light Result register #5

[85])}

Read register #6:command: 27h, data (VCNL4020C_I2C_Bus_Read_Adr., {Low Byte Data of Ambient Light Result register #6

[86])}

3.3 Continuous Conversion Mode in Ambient Light Measurement

In the following is a detail description of the function “continuous conversion” (bit 7 of register #4)

Standard mode (bit 7 of reg #4 = 0):

In standard mode the ambient light measurement is done during a fixed time frame of 100 ms. The single measurement itself

takes actually only appr. 300 μs.

The following figures show examples of this measurement timing in standard mode using averaging function 2 and 8 as

examples for illustration (possible values up to 128).

Fig. 15 - Ambient Light Measurement with Averaging = 2;

Final Measurement Result = Average of these 2 Measurements

Fig. 16 - Ambient Light Measurement with Averaging = 8;

Final Measurement Result = Average of these 8 Measurements

Note

•≥ Independent of setting of averaging the result is available only after 100 ms.

Continuous conversion mode (bit 7 of register #4 = 1):

In continuous conversion mode the single measurements are done directly subsequent after each other.

See following examples in figure 17 and 18

Fig. 17 - Ambient Light Measurement with Averaging = 2;

using Continuous Conversion Mode

Fig. 18 - Ambient Light Measurement with Averaging = 8;

using Continuous Conversion Mode

50 ms

100 ms

Start

22315

12.5 ms

Start

100 ms

22316

460 μs

Start

1.5 ms22317

460 μs

Start

4.2 ms

22318

VCNL4020C

www.vishay.com Vishay Semiconductors

Rev. 1.1, 20-Mar-18 13 Document Number: 84350

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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

PACKAGE DIMENSIONS in millimeters

Not indicated tolerances ± 0.1

1.27

1.5

0.69

2.03

4.15

4.9

2.4

0.15

0.83

0.65

0.685

2.744x0.685=

0.78 1.49 1.62

Drawing-No.: 6.550-5319

Proposed PCB Footprint

Pinning Bottom view

Pinning Top view

0.3

0.55

Anode

Emitter

SDA

INT

SCL

VDD

Cathode

Emitter

VSS

Cathode

SDA

INT

SCL

VDD

Cathode

Emitter

VSS

Cathode

Anode

Emitter

technical drawings

according to DIN

specifications

0.2

0.8

2.744x 0.685=

2.4

()

4.9()

0.45

0.2

0.8

0.4

0.37

0.83

1.75 0.4 1.1

0.25

0.28

0.4

0.73 0.95 0.98

0.24

VCNL4020C

www.vishay.com Vishay Semiconductors

Rev. 1.1, 20-Mar-18 14 Document Number: 84350

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

TAPE AND REEL DIMENSIONS in millimeters

VCNL4020C

www.vishay.com Vishay Semiconductors

Rev. 1.1, 20-Mar-18 15 Document Number: 84350

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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

SOLDER PROFILE

Fig. 19 - Lead (Pb)-free Reflow Solder Profile

According to J-STD-020

DRYPACK

Devices are packed in moisture barrier bags (MBB) to

prevent the products from moisture absorption during

transportation and storage. Each bag contains a desiccant.

FLOOR LIFE

Floor life (time between soldering and removing from MBB)

must not exceed the time indicated on MBB label:

Floor life: 72 h

Conditions: Tamb < 30 °C, RH < 60 %

Moisture sensitivity level 4, according to J-STD-020.

DRYING

In case of moisture absorption devices should be baked

before soldering. Conditions see J-STD-020 or label.

Devices taped on reel dry using recommended conditions

192 h at 40 °C (+ 5 °C), RH < 5 %.

240 °C

Max. 260 °C

217 °C

255 °C

19841

100

1000

10000

100

200

300

0 50 100 150 200 300

Axis Title

1st line

2nd line

Temperature (°C)

Time (s)

150

250

245 °C

Max. 100 s

Max. 30 s

Max. 120 s

Max. ramp down 6 °C/s

Max. ramp up 3 °C/s

Legal Disclaimer Notice

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Revision: 01-Jan-2021 1Document Number: 91000

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