LTR-390UV数据手册(1_LTR-390UV_Final_DS_V1

OPTICAL SENSOR LTR-390UV-01 Description Features The LTR-390UV-01 is an integrated low voltage I2C ambient  I2C interface capable of Standard mode @100kHz or logic Fast mode @400kHz communication; 1.8V light sensor (ALS) and ultraviolet light sensor (UVS) in a single compatible miniature 2x2mm chipled lead-free surface mount package.  Ambient Light / Ultraviolet light (UVS) Technology in one This sensor converts light intensity to a digital output signal ultra-small 2x2mm ChipLED package capable of direct I2C interface. It provides a linear ALS  Very low power consumption with sleep mode capability response over a wide dynamic range, and is well suited to  Operating voltage ranges: 1.7V to 3.6V applications under high ambient brightness.  Operating temperature ranges: -40 to +85 ºC The sensor has a programmable interrupt with hysteresis to response to events and that removes the need to poll the   Built-in temperature compensation circuit Programmable interrupt function for ALS , UVS with upper and lower thresholds sensor for a reading which improves system efficiency. This CMOS design and factory-set one time trimming capability ensure minimal sensor-to-sensor variations for ease of manufacturability to the end customers. Application  RoHS and Halogen free compliant  UVS/ALS Features  13 to 20 bits effective resolution  Wide dynamic range of 1:18,000,000 with linear response  Close to human eye spectral response  Automatic rejection for 50Hz/60Hz lighting  Identifying the UV index in ambient light helps people to flicker effectively protect themselves from sunburns, cancer or eye damage.  To control brightness and color of the display panel in mobile, computing, and consumer devices. Ordering Information Part Number Packaging Type Package LTR-390UV-01 Tape and Reel 6-pin chipled package Quantity 2500 1/33 Part No. : LTR-390UV-01 BNS-OD-FC002/A4

1. Outline Dimensions OPTICAL SENSOR LTR-390UV-01 2/33 Part No. : LTR-390UV-01 BNS-OD-FC002/A4

Functional Block Diagram 2. OPTICAL SENSOR LTR-390UV-01 LTR-390UV-01 contains 2 integrated photodiodes (ALS/UVS) for respective photocurrent measurements. The photodiode currents are converted to digital values by ADCs. The sensor also includes some peripheral circuits such as an internal oscillator and voltage reference. 3/33 Part No. : LTR-390UV-01 BNS-OD-FC002/A4

3. Application Circuit OPTICAL SENSOR LTR-390UV-01 I/O Pins Configuration Table Pin I/O Type Symbol Description 1 2 3 4 5 6 I O I/O VDD NC GND SCL* INT* SDA* Power Supply Voltage No connection to this pin Ground I2C serial clock. This pin is an open drain input. Level Interrupt Pin. This pin is an open drain output. I2C serial data. This pin is an open drain input / output. * Note: For noisy environment, add 10pF capacitor from signal to GND for additional noise filtering. Recommended Application Circuit Components Component Recommended Value Rp1, Rp2, Rp3 [1] 1 k to 10 k C1 C2 0.1uF 4.7uF Notes: [1] Selection of pull-up resistors value is dependent on bus capacitance values. For more details, please refer to I2C Specifications: http://www.nxp.com/documents/user_manual/UM10204.pdf 4/33 Part No. : LTR-390UV-01 BNS-OD-FC002/A4

OPTICAL SENSOR LTR-390UV-01 Rating and Specification 4.1. Absolute Maximum Rating at Ta=25°C Parameter Supply Voltage Symbol VDD Digital Voltage Range SCL, SDA, INT Storage Temperature Tstg Max. Input Current SCL,SDA,INT Electrostatic Discharge Protection (Human Body Model JESD22-A114) VHBM Min. -0.5 -100 Max. Unit 4.0 4.0 -45 to 95 100 2000 V V C mA V Note: Exceeding these ratings could cause damage to the sensor. All voltages are with respect to ground. Currents are positive into, negative out of the specified terminal. 4.2. Recommended Operating Conditions Description Supply Voltage Interface signal input high Interface signal input low Operating Temperature Symbol Min. Typ. Max. Unit VDD VI2Chigh VI2Clow Tope 1.7 1.5 0 -40 3.6 VDD 0.4 85 V V V C 4.3. Electrical Specifications (VDD = 2.8V, Ta=25°C, unless otherwise noted) Parameter Min. Typ. Max. Unit Condition ALS Active Mode Current UVS Active Mode Current Standby Current Wakeup Time from Standby 110 100 200 1 5 10 10 uA uA uA ms Max. duty cycle, Vdd=2.8V, Gain 3x Max. duty cycle, Vdd=2.8V Standby / Sleep Mode From Standby to Active mode where measurement can start 4. 5/33 Part No. : LTR-390UV-01 BNS-OD-FC002/A4

OPTICAL SENSOR LTR-390UV-01 4.4. Characteristics Ambient Light Parameter Min. Typ. Max. Unit Condition ALS Output Resolution Dark Level Count Calibrated Lux Error In Gain Range 3 ALS Accuracy 50/60 Hz flicker noise error 13 -10 -25 -5 18 0 20 5 10 25 5 Bit Programmable for 13,16,17,18,19, 20 bit count 0 Lux, Tope=25°C, 18-bit range % % % White LED,5000K, Tope=+25°C Across different light sources 4.5. Characteristics UVS Sensor Parameter Min. Typ. Max. UVS Output Resolution 13 18 20 Unit Bit UV Count 80 100 120 count Condition Programmable for 13,16,17,18,19,20 bit UV LED 310nm, Tope=25°C, 18-bit Gain =18X, Irradiance =35uW/cm2 UV Sensitivity 1400 UVI accuracy -2 -1.5 2 1.5 Counts/UVI Gain = 18X, 20-bit , no window UVI Gain = 18X, 20-bit, UVI > 3, no window Gain = 18X, 20-bit, UVI < 3, no window 6/33 Part No. : LTR-390UV-01 BNS-OD-FC002/A4

OPTICAL SENSOR LTR-390UV-01 4.6. Typical Device Parameter (VDD = 2.8V, Ta=25°C, Default power-up settings, unless otherwise noted) ALS Spectral Response UV Response y t i v i t i s n o p s e r d e z i l a m r o N 1.1 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 300 500 700 900 1100 Wavelength [nm] Figure 4.1 Spectral Response of ALS Angular of Incidence y t i v i t i s n o p s e r d e z i l a m r o N 1.1 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 250 350 450 550 Wavelength [nm] Figure 4.2 UV Spectral Response Sensor UVI vs Ref UVI (Gain 18x, 20-Bit, Sensitivity=1400 counts/UVI) Figure 4.3 ALS Sensitivity vs. Angular of Incidence Figure 4.4 Sensor UVI vs Reference UVI (Reference Solarmeter) 7/33 Part No. : LTR-390UV-01 BNS-OD-FC002/A4

OPTICAL SENSOR LTR-390UV-01 4.8. AC Electrical Characteristics All specifications are at VBus = 1.7V, Tope = 25C, unless otherwise noted. Parameter Symbol Standard (Min) Fast (Min) Unit SCL clock frequency Bus free time between a STOP and START condition Hold time (repeated) START condition. After this period, the first clock pulse is generated LOW period of the SCL clock HIGH period of the SCL clock Set-up time for a repeated START condition Set-up time for STOP condition Rise time of both SDA and SCL signals Fall time of both SDA and SCL signals Data hold time Data setup time Pulse width of spikes which must be suppressed by the input filter 100 400 KHz 4.7 4 4.7 4 4.7 4 30 30 0 100 0 300 300 100 50 us us us us us us ns ns us ns ns Definition of timing for I2C bus 8/33 Part No. : LTR-390UV-01 BNS-OD-FC002/A4 SCLfBUFtSTAHDt;LOWtHIGHtSTASUt;STOSUt;rtftDATHDt;DATSUt;SPt

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LTR-390UV数据手册(1_LTR-390UV_Final_DS_V1_2).pdf

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