VCNL4020-GS08

VCNL4020 www.vishay.com Vishay Semiconductors Fully Integrated Proximity and Ambient Light Sensor With Infrared Emitter, I2C Interface, and Interrupt Function FEATURES • Package type: surface-mount • 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-PD), proximity sensor (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 • I2C bus H-level range: 1.7 V to 5 V IR anode 1 10 IR cathode • Floor life: 72 h, MSL 4, according to J-STD-020 SDA 2 9 GND INT 3 • Low stand by current consumption: 1.5 μA 8 GND 7 nc 6 nc SCL 4 VDD 5 • Material categorization: for definitions of compliance please see www.vishay.com/doc?99912 PROXIMITY FUNCTION 22620 • Built-in infrared emitter and photo-pin-diode for proximity function DESCRIPTION The VCNL4020 is a fully integrated proximity 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. • 16 bit effective resolution for proximity detection range ensures excellent cross talk immunity • Programmable LED drive current from 10 mA to 200 mA in 10 mA steps • Excellent ambient light suppression by signal modulation APPLICATIONS • Proximity distance up to 200 mm • Proximity sensor for mobile devices (e.g. smart phones, touch phones, PDA, GPS) for touch screen locking, power saving, etc. AMBIENT LIGHT FUNCTION • Integrated ambient light function for display/keypad contrast control and dimming of mobile devices • 16 bit dynamic range from 0.25 lx to 16 klx • Proximity / optical switch for consumer, computing and industrial devices and displays • Built-in ambient light photo-pin-diode close-to-human-eye sensitivity with • 100 Hz and 120 Hz flicker noise rejection • Dimming control for consumer, computing and industrial displays PRODUCT SUMMARY PART NUMBER OPERATING RANGE (mm) OPERATING VOLTAGE RANGE (V) VCNL4020 1 to 200 2.5 to 3.6 I2C BUS LED PULSE VOLTAGE CURRENT (1) RANGE (mA) (V) 1.7 to 5 10 to 200 AMBIENT LIGHT RANGE (lx) AMBIENT LIGHT RESOLUTION (lx) OUTPUT CODE ADC RESOLUTION PROXIMITY / AMBIENT LIGHT 0.25 to 16 383 0.25 16 bit, I2C 16 bit / 16 bit Note (1) Adjustable through I2C interface Rev. 1.5, 20-Mar-18 Document Number: 83476 1 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 VCNL4020 www.vishay.com Vishay Semiconductors ORDERING INFORMATION ORDERING CODE VOLUME (1) PACKAGING VCNL4020-GS08 Tape and reel VCNL4020-GS18 REMARKS MOQ: 3300 pcs 4.90 mm x 2.40 mm x 0.83 mm MOQ: 13 000 pcs Note (1) MOQ: minimum order quantity ABSOLUTE MAXIMUM RATINGS (Tamb = 25 °C, unless otherwise specified) PARAMETER SYMBOL MIN. MAX. Supply voltage TEST CONDITION VDD -0.3 5.5 V Operation temperature range Tamb -25 +85 °C Tstg -25 Storage temperature range Total power dissipation Tamb ≤ 25 °C Junction temperature UNIT +85 °C Ptot 50 mW Tj 100 °C BASIC CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified) PARAMETER MAX. UNIT Supply voltage VDD TEST CONDITION SYMBOL 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 MIN. TYP. 1.7 5 V 0.4 V 2 μA INT low voltage 3 mA sink current Current consumption Standby current, no IRED-operation 1.5 2 measurements per second, IRED current 20 mA 5 μA 250 measurements per second, IRED current 20 mA 520 μA 2 measurements per second, IRED current 200 mA 35 μA 250 measurements per second, IRED current 200 mA 4 mA 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 Digital resolution (LSB count ) 0.25 lx EV = 100 lx averaging = 64 400 counts Current consumption proximity mode incl. IRED (averaged) Current consumption ambient light mode Ambient light resolution Ambient light output I2C clock rate range Rev. 1.5, 20-Mar-18 fSCL 3400 kHz Document Number: 83476 2 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 VCNL4020 www.vishay.com Vishay Semiconductors CIRCUIT BLOCK DIAGRAM 1 SDA 2 INT 3 SCL 4 VDD 5 30 mm x 30 mm 10 IR cathode IRED PD 9 GND 8 GND 7 nc 6 nc Kodak gray card (18 % reflectivity) d = 20 mm IR anode TEST CIRCUIT Ambi VCNL4020 ASIC PD Proxi 22621 VCNL4020 22300-2 Proxi-PD IRED Note • nc must not be electrically connected Pads 6 and 7 are only considered as solder pads BASIC CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified) 100 000 LED current 200 mA 2.2 10 000 2.0 VDD = 3.6 V VDD = 3.5 V VDD = 3.3 V VDD = 3.1 V 1.8 Proximity Value (cts) IDD - Supply Current Idle Mode (μA) 2.4 VDD = 2.5 V VDD = 2.7 V VDD = 2.9 V 1.6 1.4 LED current 100 mA 100 LED current 20 mA 10 1.2 Media: Kodak gray card Mod. frequency = 390 kHz 1.0 - 50 - 30 - 10 1 10 30 50 70 90 110 0.1 10 1 100 Tamb - Ambient Temperature (°C) Distance to Reflecting Card (mm) Fig. 1 - Idle Current vs. Ambient Temperature Fig. 3 - Proximity Value vs. Distance 22301 250 IIRED - Forward Current IRED (mA) 2.4 IDD - Supply Current Idle Mode (μA) 1000 100 °C 2.2 2.0 80 °C 1.8 55 °C 1.6 25 °C 1.4 -10 °C 1.2 -40 °C VIRED = 2.5 V 200 mA 200 160 mA 150 2.4 2.6 2.8 3.0 3.2 3.4 VDD - Supply Voltage (V) Fig. 2 - Idle Current vs. VDD Rev. 1.5, 20-Mar-18 3.6 140 mA 120 mA 100 mA 100 80 mA 60 mA 50 1.0 22302 180 mA 40 mA 20 mA 0 -60 3.8 22304 -20 20 60 100 140 Tamb - Ambient Temperature (°C) Fig. 4 - Forward Current vs. Temperature Document Number: 83476 3 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 VCNL4020 www.vishay.com Vishay Semiconductors 0° 0.8 0.7 0.6 0.5 0.4 0.3 0.2 1.0 0.9 40° 0.8 0.7 60° 0.6 ϕ - Angular Displacement Srel - Relative Sensitivity 0.9 80° 0.1 0 750 800 850 900 950 1000 0.5 0.4 0.3 0.2 0.1 0 1050 λ - Wavelength (nm) 22305 22308 Fig. 8 - Relative Radiant Sensitivity vs. Angular Displacement (Proximity Sensor) Fig. 5 - Relative Radiant Intensity vs. Wavelength 20° 100 000 1.0 0.9 40° 0.8 0.7 60° 0.6 ϕ - Angular Displacement 0° Irel - Relative Radiant Intensity 20° IF = 100 mA 1.0 Ambient Light Signal (cts) Ie, rel - Relative Radiant Intensity 1.1 10 000 1000 100 10 80° 1 0.5 0.4 0.3 0.2 0.1 0 0.1 1 22306 10 100 1000 10 000 EV - Illuminance (lx) Fig. 9 - Ambient Light Value vs. Illuminance Fig. 6 - Relative Radiant Intensity vs. Angular Displacement S(λ)rel - Relative Spectral Sensitivity S(λ)rel - Relative Spectral Sensitivity 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 400 500 22307 600 700 800 900 1000 1100 λ - Wavelength (nm) Fig. 7 - Relative Spectral Sensitivity vs. Wavelength (Proximity Sensor) Rev. 1.5, 20-Mar-18 1.0 Human eye VCNL4020 0.8 0.6 0.4 0.2 0 400 500 600 700 800 900 1000 1100 λ - Wavelength (nm) Fig. 10 - Relative Spectral Sensitivity vs. Wavelength (Ambient Light Sensor) Document Number: 83476 4 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 VCNL4020 www.vishay.com Vishay Semiconductors 20° 1.0 0.9 40° Vertical Horizontal 0.8 0.7 60° 0.6 ϕ - Angular Displacement Srel - Relative Sensitivity 0° 80° 0.5 0.4 0.3 0.2 0.1 0 22311 Fig. 11 - Relative Radiant Sensitivity vs. Angular Displacement (Ambient Light Sensor) APPLICATION INFORMATION VCNL4020 is a cost effective solution of proximity and ambient light sensor with I2C bus interface. The standard serial digital interface is easy to access “Proximity Signal” and “Light Intensity” without complex calculation and programming by external controller. Beside the digital output also a flexible programmable interrupt pin is available. 1. Application Circuit 1.7 V to 5.0 V 2.5 V to 5.0 V C1 C2 R2 R3 R4 22 μF 100 nF 2.5 V to 3.6 V IR_Anode (1) R1 10R C4 C3 VDD (5) 10 μF 100 nF VCNL4020 GND (8, 9) Host Micro Controller INT (3) GPIO SCL (4) SDA (2) I2C Bus Clock SCL I2C Bus Data SDA 22312-3 Fig. 12 - Application Circuit (x) = Pin Number Notes • 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 VCNL4020 into an Application”. • IR_Cathode needs no external connection. The needed connection to the driver is done internally. Rev. 1.5, 20-Mar-18 Document Number: 83476 5 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 VCNL4020 www.vishay.com Vishay Semiconductors 2. I2C Interface The VCNL4020 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 VCNL4020. 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. Send byte S Write command to VCNL4020 Slave address Receive byte Wr A Register address Data byte A A P Read data from VCNL4020 S Slave address Wr A Register address A P S Slave address Rd A Data byte A P S = start condition P = stop condition A = acknowledge Host action 22313-2 VCNL4020 response Fig. 13 - Send Byte/Receive Byte Protocol Device Address Register Addresses The VCNL4020 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. VCNL4020 has seventeen user accessible 8 bit registers. The register addresses are 80h (register #0) to 90h (register #16). REGISTER FUNCTIONS Register #0 Command Register Register address = 80h The register #0 is for starting ambient light or proximity measurements. This register contains 2 flag bits for data ready indication. TABLE 1 - COMMAND REGISTER #0 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 config_lock als_data_rdy prox_data_rdy als_od prox_od als_en prox_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. prox_data_rdy Read only bit. Value = 1 when proximity 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 prox_od als_en prox_en selftimed_en 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). R/W bit. Starts a single on-demand measurement for proximity. Result is available at the end of conversion for reading in the registers #7(HB) and #8(LB). R/W bit. Enables periodic als measurement R/W bit. Enables periodic proximity measurement R/W bit. Enables state machine and LP oscillator for self timed measurements; no measurement is performed until the corresponding bit is set Note • With setting bit 3 and bit 4 at the same write command, a simultaneously measurement of ambient light and proximity is done. Beside als_en and/or prox_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. Rev. 1.5, 20-Mar-18 Document Number: 83476 6 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 VCNL4020 www.vishay.com Vishay Semiconductors Register #1 Product ID Revision Register Register address = 81h. This register contains information about product ID and product revision. Register data value of current revision = 21h. TABLE 2 - PRODUCT ID REVISION REGISTER #1 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Product ID Bit 1 Bit 0 Bit 1 Bit 0 Revision ID Description Product ID Read only bits. Value = 2 Revision ID Read only bits. Value = 1 Register #2 Rate of Proximity Measurement Register address = 82h. TABLE 3 - PROXIMITY RATE REGISTER #2 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Rate of Proximity Measurement (no. of measurements per second) n/a Description Proximity 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 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. Register #3 LED Current Setting for Proximity Mode Register address = 83h. This register is to set the LED current value for proximity measurement. 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 4 - IR LED CURRENT REGISTER #3 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Fuse prog ID IR LED current value Fuse prog ID Read only bits. Information about fuse program revision used for initial setup/calibration of the device. Bit 0 Description IR LED current value Rev. 1.5, 20-Mar-18 R/W bits. IR 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. Document Number: 83476 7 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 VCNL4020 www.vishay.com Vishay Semiconductors Register #4 Ambient Light Parameter Register Register address = 84h. TABLE 5 - AMBIENT LIGHT PARAMETER REGISTER #4 Bit 7 Bit 6 Cont. conv. mode Bit 5 Bit 4 Bit 3 Auto offset compensation als_rate Bit 2 Bit 1 Bit 0 Averaging function (number of measurements per run) Description Cont. conversion mode Ambient light measurement rate Auto offset compensation Averaging function 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. 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 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. 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) 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. Register #5 and #6 Ambient Light Result Register Register address = 85h and 86h. These registers are the result registers for ambient light measurement readings. The result is a 16 bit value. The high byte is stored in register #5 and the low byte in register #6. TABLE 6 - AMBIENT LIGHT RESULT REGISTER #5 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Bit 1 Bit 0 Description Read only bits. High byte (15:8) of ambient light measurement result TABLE 7 - AMBIENT LIGHT RESULT REGISTER #6 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Description Read only bits. Low byte (7:0) of ambient light measurement result Rev. 1.5, 20-Mar-18 Document Number: 83476 8 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 VCNL4020 www.vishay.com Vishay Semiconductors Register #7 and #8 Proximity Measurement Result Register Register address = 87h and 88h. These registers are the result registers for proximity measurement readings. The result is a 16 bit value. The high byte is stored in register #7 and the low byte in register #8. TABLE 8 - PROXIMITY RESULT REGISTER #7 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Bit 1 Bit 0 Description Read only bits. High byte (15:8) of proximity measurement result TABLE 9 - PROXIMITY RESULT REGISTER #8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Description Read only bits. Low byte (7:0) of proximity measurement result Register #9 Interrupt Control Register Register address = 89h. TABLE 10 - INTERRUPT CONTROL REGISTER #9 Bit 7 Bit 6 Int count exceed Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 n/a INT_PROX_ ready_EN INT_ALS_ ready_EN INT_THRES_EN INT_THRES_ SEL Description Int count exceed INT_PROX_ready_EN INT_ALS_ ready_EN 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 R/W bit. Enables interrupt generation at proximity data ready 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 proximity measurements If 1: thresholds are applied to als measurements Rev. 1.5, 20-Mar-18 Document Number: 83476 9 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 VCNL4020 www.vishay.com Vishay Semiconductors Register #10 and #11 Low Threshold 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. TABLE 11 - LOW THRESHOLD REGISTER #10 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Bit 2 Bit 1 Bit 0 Description R/W bits. High byte (15:8) of low threshold value TABLE 12 - LOW THRESHOLD REGISTER #11 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Description R/W bits. Low byte (7:0) of low threshold value Register #12 and #13 High Threshold 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. TABLE 13 - HIGH THRESHOLD REGISTER #12 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Bit 1 Bit 0 Description R/W bits. High byte (15:8) of high threshold value TABLE 14 - HIGH THRESHOLD REGISTER #13 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Description R/W bits. Low byte (7:0) of high threshold value Register #14 Interrupt Status Register Register address = 8Eh. This register contains information about the interrupt status for either proximity or ALS function and indicates if high or low going threshold exceeded. TABLE 15 - INTERRUPT STATUS REGISTER #14 Bit 7 Bit 6 Bit 5 n/a Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 int_prox_ready int_als_ready int_th_low int_th_hi Description int_prox_ready int_als_ready R/W bit. Indicates a generated interrupt for proximity 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 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. Rev. 1.5, 20-Mar-18 Document Number: 83476 10 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 VCNL4020 www.vishay.com Vishay Semiconductors Register #15 Proximity Modulator Timing Adjustment Register address = 8Fh. TABLE 16 - PROXIMITY MODULATOR TIMING ADJUSTMENT #15 Bit 7 Bit 6 Bit 5 Bit 4 Modulation delay time Bit 3 Bit 2 Proximity frequency Bit 1 Bit 0 Modulation dead time Description Modulation delay time R/W bits. Setting a delay time between IR LED signal and IR input signal evaluation. This function is for compensation of delays from IR LED and IR photo diode. Also in respect to the possibility for setting different proximity signal frequency. Correct adjustment is optimizing measurement signal level. ( DEFAULT = 0) Proximity frequency R/W bits. Setting the proximity IR test signal frequency The proximity measurement is using a square IR 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 IR signal at the slopes of the IR signal. ( DEFAULT = 1) This function is for reducing of possible disturbance effects. This function is reducing signal level and should be used carefully. 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 Prox Frequency = 0 . With that register#15 should be programmed with 1 (= default value). Register #16 Ambient IR Light Level Register Register address = 90h. 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 for proximity and ambient light executed. Also the current sink for the IR-LED is inactive, so there is no need for changing register #3 (IR 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. Receive byte Read data from VCNL4020 S Slave address Wr A Register address A P S Slave address Rd A Data byte A P S = start condition P = stop condition A = acknowledge Host action VCNL4020 response 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 register. Rev. 1.5, 20-Mar-18 Document Number: 83476 11 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 VCNL4020 www.vishay.com Vishay Semiconductors Example: read register “Ambient Light Result Register” #5 and #6: Addressing:command: 26h, 85h (VCNL4020_I2C_Bus_Write_Adr., Ambient Light Result Register #5 [85]) Read register #5:command: 27h, data (VCNL4020_I2C_Bus_Read_Adr., {High Byte Data of Ambient Light Result register #5 [85])} Read register #6:command: 27h, data (VCNL4020_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). Start Start 50 ms 12.5 ms 100 ms 100 ms 22316 22315 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 Start Start 460 μs 460 μs 1.5 ms 4.2 ms 22317 22318 Fig. 17 - Ambient Light Measurement with Averaging = 2; using Continuous Conversion Mode Rev. 1.5, 20-Mar-18 Fig. 18 - Ambient Light Measurement with Averaging = 8; using Continuous Conversion Mode Document Number: 83476 12 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 VCNL4020 www.vishay.com Vishay Semiconductors PACKAGE DIMENSIONS in millimeters 4.15 VDD SCL INT Cathode PD Cathode PD VDD SCL VSS INT SDA Anode Emitter 0.83 0.15 technical drawings according to DIN specifications Proposed PCB Footprint (4.9) 0.69 1.75 0.83 Not indicated tolerances ± 0.1 0.2 0.2 0.45 0.4 0.8 Drawing-No.: 6.550-5319 (2.4) 1.27 4.9 1.1 0.4 0.28 1.5 2.4 0.37 0.4 0.25 0.8 2.03 Rev. 1.5, 20-Mar-18 VSS Anode Emitter Cathode Emitter Pinning Top view Cathode Emitter 0.78 0.73 0.95 0.98 1.49 1.62 0.24 0.3 0.65 0.55 0.685 SDA Pinning Bottom view 4x0.685=2.74 4x 0.685=2.74 Document Number: 83476 13 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 VCNL4020 www.vishay.com Vishay Semiconductors TAPE AND REEL DIMENSIONS in millimeters Rev. 1.5, 20-Mar-18 Document Number: 83476 14 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 VCNL4020 www.vishay.com Vishay Semiconductors SOLDER PROFILE 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. Axis Title 10000 300 Max. 260 °C 255 °C 240 °C 217 °C 245 °C FLOOR LIFE 1000 200 Max. 30 s 1st line 2nd line 2nd line Temperature (°C) 250 150 Max. 120 s 100 Max. 100 s Max. ramp down 6 °C/s 100 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. Max. ramp up 3 °C/s 50 DRYING 10 0 0 50 100 150 200 250 300 Time (s) 19841 Fig. 19 - Lead (Pb)-free Reflow Solder Profile According to J-STD-020 Rev. 1.5, 20-Mar-18 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 %. Document Number: 83476 15 For technical questions, contact: sensorstechsupport@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. 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