Product Overview
The STK3335-X is an integrated ambient light sensor and proximity sensor with a built-in IR LED and I2C interface. It offers robust backlight/display brightness control through ambient light sensing and proximity estimation via infrared sensing, featuring an interrupt function. The device boasts a spectral response close to the human eye for ambient light and is optimized for 940nm infrared light for proximity sensing. It includes programmable IR LED current, noise cancellation for ambient IR noise rejection, excellent temperature compensation, and on-chip refresh rate setting. A software shutdown mode is available for power saving. The STK3335-X operates within a voltage range of 1.7V to 2.0V.
Product Attributes
- Brand: Sensortek
- Certifications: Hazardous Substance Free, RoHS / REACH Compliant
- Package Options: OLGA
- Material: Lead-free package
Technical Specifications
| Parameter | Min. | Typ. | Max. | Unit | Notes |
|---|---|---|---|---|---|
| Absolute Maximum Ratings | |||||
| VDD Supply voltage | -0.3 | 2.0 | V | All voltages are measured with respect to GND | |
| VLEDA Voltage of LEDs anode | -0.3 | 3.6 | V | ||
| VLDR Voltage of LDR | 3.6 | V | |||
| Operation temperature | -40 | 85 | C | ||
| Recommended Operating Conditions | |||||
| VDD Supply voltage | 1.7 | 2.0 | V | All voltages are measured with respect to GND | |
| VLEDA Voltage of LEDs anode | 2.8 | 3.6 | V | ||
| fI2C Clock frequency of I2C | 400 | KHz | |||
| Operation temperature | -40 | 85 | C | ||
| ESD Protection | |||||
| Electrostatic discharge protection (HBM) | 2 | kV | |||
| Electrostatic discharge protection (MM) | 0.2 | kV | |||
| Latch Up | 100 | mA | |||
| Electrical and Optical Characteristics (VDD = 1.8V & VLED = 2.8V, 25C) | |||||
| ALS only supply current | 243 | 329 | A | Note1,2 | |
| PS only supply current | 231 | 313 | A | Note1,2 | |
| Shutdown current | 0.7 | 3 | A | Note1,2 | |
| Logic high, I2C | 1.3 | VDD | V | Note6 | |
| Logic low, I2C | 0.4 | V | Note7 | ||
| Peak sensitivity wavelength for ALS | 550 | nm | |||
| Full scale ALS counts | 65535 | counts | |||
| ALS dark offset | 0 | 4 | counts | Note2,4 | |
| ALS sensing tolerance | -12.5 | +12.5 | % | Note2,3 | |
| High sensitivity wavelength range for PS | 800 | 940 | 1000 | nm | |
| Full scale PS counts | 65535 | counts | |||
| LED sink current (IRDR_LED[3:0] = 0000) | 3.125 | mA | Note5 | ||
| LED sink current (IRDR_LED[3:0] = 1010) | 200 | mA | Note5 | ||
| I2C Timing Chart Characteristics | |||||
| SCL clock frequency (Standard Mode) | 10 | 100 | KHz | ||
| SCL clock frequency (Fast Mode) | 10 | 400 | KHz | ||
| Low period of the SCL clock (Standard Mode) | 4.7 | s | |||
| Low period of the SCL clock (Fast Mode) | 1.3 | s | |||
| High period of the SCL clock (Standard Mode) | 4.0 | s | |||
| High period of the SCL clock (Fast Mode) | 0.6 | s | |||
| Data hold time | 0 | ns | |||
| Data set-up time (Standard Mode) | 250 | ns | |||
| Data set-up time (Fast Mode) | 100 | ns | |||
| Rise time of SDA and SCL (Standard Mode) | 1000 | ns | |||
| Rise time of SDA and SCL (Fast Mode) | 300 | ns | |||
| Fall time of SDA and SCL (Standard Mode) | 300 | ns | |||
| Fall time of SDA and SCL (Fast Mode) | 300 | ns | |||
Applications
Mobile Phone, Smart-phone, PDA
2506271720_SENSORTEK-STK3335-X_C49230200.pdf
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