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ISL29003IROZ-T7 数据表(PDF) 11 Page - Intersil Corporation |
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ISL29003IROZ-T7 数据表(HTML) 11 Page - Intersil Corporation |
11 / 14 page 11 FN7464.6 November 17, 2011 Suggested PCB Footprint Footprint pads should be a nominal 1-to-1 correspondence with package pads. Since ambient light sensor devices do not dissipate high power, heat dissipation through the exposed pad is not important; instead, similar to DFN or QFN, the exposed pad provides robustness in board mount process. Intersil recommends mounting the exposed pad to the PCB, but this is not mandatory. Layout Considerations The ISL29003 is relatively insensitive to layout. Like other I2C devices, it is intended to provide excellent performance even in significantly noisy environments. There are only a few considerations that will ensure best performance. Route the supply and I2C traces as far as possible from all 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 ISL29003 is shown in Figure 6. The ISL29003’s I2C address is internally hardwired as 1000100. The device can be tied onto a system’s I2C bus together with other I2C compliant devices. Soldering Considerations Convection heating is recommended for reflow soldering; direct-infrared heating is not recommended. The plastic ODFN package does not require a custom reflow soldering profile, and is qualified to +260°C. A standard reflow soldering profile with a +260°C maximum is recommended. TABLE 16. RECOMMENDED DIMENSIONS FOR A FLAT WINDOW DESIGN DTOTAL D1 DLENS @ 35° VIEWING ANGLE DLENS @ 45° VIEWING ANGLE 1.5 0.50 2.25 3.75 2.0 1.00 3.00 4.75 2.5 1.50 3.75 5.75 3.0 2.00 4.30 6.75 3.5 2.50 5.00 7.75 t = 1 Thickness of lens D1 Distance between ISL29001 and inner edge of lens DLENS Diameter of lens DTOTAL Distance constraint between the ISL29001 and lens outer edge *All dimensions are in mm. 6 5 4 0.56mm 0.46mm 2.00mm 1 2 3 0.29mm 2.10mm FIGURE 5. SENSOR LOCATION DRAWING FIGURE 6. ISL29003 TYPICAL CIRCUIT VDD 1 GND 2 REXT 3 INT 4 SCL 5 SDA 6 ISL29003 R1 10k R2 10k R3 RES1 REXT 100k C2 0.1µF C1 4.7µF 2.5V TO 3.3V 1.8V TO 5.5V MICROCONTROLLER SDA SCL I2C SLAVE_0 I2C SLAVE_1 I2C SLAVE_n I2C MASTER SCL SDA SCL SDA ISL29003 |
类似零件编号 - ISL29003IROZ-T7 |
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类似说明 - ISL29003IROZ-T7 |
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