isl29004 Intersil Corporation, isl29004 Datasheet
isl29004
Related parts for isl29004
isl29004 Summary of contents
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... I C interface. The ISL29004 ODFN package and has two I address pins for multiple devices on the same bus. The ISL29003 is a similar light sensor with a hardwired I address that is available in ODFN6 package. ...
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... Minimum I C Clock Rate is guaranteed by design. 3. The voltage threshold levels of the SDA and SCL pins are VDD dependent ISL29004 = +25°C) Maximum Die Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . +125°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-45°C to +100°C Operating Temperature . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C ESD, Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2kV ESD, Machine Model ...
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... N ISL29004 VDD Positive supply; connect this pin to a regulated 2.5V to 3.3V supply GND Ground pin. REXT External resistor pin for ADC reference; connect this pin to ground through a (nominal) 100kΩ resistor INT Interrupt pin; LO for interrupt/alarming. The INT pin is an open drain. ...
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... Principles of Operation Photodiodes The ISL29004 contain two photodiodes. Diode1 is sensitive to both visible and intrared light, while Diode2 is mostly sensitive to infrared light. The spectral response of the two diodes are independent from one another. See Figure Spectral Response vs Wavelength in the performance curves section. The photodiodes convert light to current. Then, the diodes’ ...
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... I C SDA SDA Out SDA DRIVEN BY MASTER CLK DATA SDA SDA Out CLK In 5 ISL29004 A REGISTER ADDRESS A STOP START SDA DRIVEN BY MASTER ...
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... Register Set There are eight registers that are available in the ISL29004. Table 1 summarizes the available registers and their functions. ADDR REGISTER (HEX) NAME Bit(s) 00 Command 01 Control 02 Interrupt threshold HI 03 Interrupt threshold LO 04 LSB_sensor 05 MSB_sensor 06 LSB_timer 07 MSB_timer 6 ISL29004 TABLE 1. REGISTER SET FUNCTION NAME ...
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... At Mode0, the mux directs the current of Diode1 to the ADC. At Mode1, the mux directs the current of Diode2 only to the ADC. 7 ISL29004 Mode3 is a sequential Mode0 and Mode1 with an internal subtract function (Diode1 - Diode2). TABLE 6. PHOTODIODE SELECT MODE; BITS 2 AND 3 ...
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... Calculating Lux The ISL29004’s output codes, DATA, are directly proportional to Lux. α The proportionality constant α is determined by the Full Scale Range, FSR, and the n-bit ADC which is user defined in the command register. The proportionality constant can 1 also be viewed as the resolution ...
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... TINT RESOLUTION (ms) (LUX/COUNT) The ISL29004 offer user flexibility in the integration time to balance resolution, speed and noise rejection. Integration time 1 can be set internally or externally and can be programmed in 16 the command register 00(hex) bit 5. 250 ...
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... Design Example 1 The ISl29004 will be designed in a portable system. The ambient light conditions that the device will be exposed most 500Lux which is a good office lighting. The light source has a 50/60Hz power line noise which is not visible by the human eye ...
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... Diode 2. Flat Window Lens Design A window lens will surely limit the viewing angle of the ISL29004. The window lens should be placed directly on top of the device. The thickness of the lens should be kept at minimum to minimize loss of power due to reflection and also to minimize loss of loss due to absorption of energy in the plastic material ...
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... All dimensions are in mm. Window with Light Guide Design If a smaller window is desired while maintaining a wide effective viewing angle of the ISL29004, a cylindrical piece of transparent plastic is needed to trap the light and then focus and guide the light on to the device. Hence the name light guide or also known as light pipe ...
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... Route the supply and I sources of noise. Use two power-supply decoupling capacitors, 4.7µF and 0.1µF, placed close to the device. Typical Circuit A typical application for the ISL29004 is shown in Figure 7. Additional I for the ISL29004 so a maximum of four ISL29004 devices can be tied on the same I Soldering Considerations Convection heating is recommended for reflow soldering ...
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... RANGE3 40k D2 30k 20k 10k - - LUMINANCE (LUX) FIGURE 12. D1 AND D2 INCANDESCENT LIGHT SOURCE RESPONSE 14 ISL29004 = 100kΩ) EXT D3 = n(D1 - kD2 1. 3.355 60k 50k 40k D2 NORMALIZED 30k 20k 10k - 900 1000 1100 1k FIGURE 9. D1 AND D2 FLUORESCENT LIGHT SOURCE ...
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... FIGURE 16. OUTPUT CODE vs SUPPLY VOLTAGE 315 COMMAND = 00H 305 5000 LUX 295 285 275 265 -60 -20 20 TEMPERATURE (°C) FIGURE 18. SUPPLY CURRENT vs TEMPERATURE 15 ISL29004 = 100kΩ) (Continued) EXT 2.0 3.2 3.5 3.8 FIGURE 15. OUTPUT CODE FOR 0 LUX vs SUPPLY VOLTAGE 320 +27°C ...
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... Typical Performance Curves (R 1.080 COMMAND = 00H 1.048 5000 LUX RANGE 3 1.016 0.984 0.952 0.920 -60 -20 20 TEMPERATURE (°C) FIGURE 20. OUTPUT CODE vs TEMPERATURE 16 ISL29004 = 100kΩ) (Continued) EXT 330 329 328 200 LUX RANGE 1 327 326 325 60 100 -60 FIGURE 21. OSCILLATOR FREQUENCY vs TEMPERATURE ...
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... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 17 ISL29004 MDP0052 0. ...