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| 型号： | SI1102-A-GMR |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 9/16页 |
| 文件大小： | 0K |
| 描述： | SENSOR OPTICAL DETECTOR |
| 产品培训模块： | Si1102 & Si1120 |
| 特色产品： | QuickSense? Portfolio |
| 标准包装： | 1 |
| 检测距离： | 19.7"（50cm）1.6' |
| 检测方法： | 反射 |
| 物体感测： | 非金属 |
| 安装类型： | 表面贴装 |
| 电流 - 电源： | 400mA |
| 电源电压： | 2.2 V ~ 5.25 V |
| 封装/外壳： | 8-WDFN 裸露焊盘 |
| 包装： | 标准包装 |
| 特点： | 低功率 |
| 其它名称： | 336-1819-6 |
Si1102
For applications where R1 resistance values are small, the proximity range can vary as a function of the ambient IR
condition. A product cover, which limits the visible light intensity, is helpful in reducing this range variation. It is
recommended that the Si1102 be evaluated and tested in-product under the various light conditions it will
encounter under normal product usage. Setting the potentiometer R1 = 0 is not recommended unless the ambient
light condition is known and relatively constant.
At any given R1 threshold setting, there are many factors that determine the precise distance that the Si1102
reports. These factors include object reflectivity, object size, ambient light type and ambient light intensity. When
used in applications where the ambient light is variable, it is recommended the Si1102 optical window be IR
transmissive but visible light opaque.
Table 4. Summary of External Component Values and Operating Conditions
R1
50 k ?
50 k ?
15 k ?
30 k ?
R2
0
Open
0
0
Strobe Frequency
250 Hz
2.0 Hz
250 Hz
250 Hz
Distance 1
12 to 22 cm
12 to 22 cm
40 to 50 cm
17 to 33 cm
IDD Average Current Consumption 2
100 μA
5 μA
100 μA
100 μA
Notes:
1. Distance measured with SFH4650 IR LED, with an IR filter, targeting an 18% gray card, 300 lux (Incandescent or CFL)
2. Average current consumption at VDD = 3.3 V, 25 °C and dark ambient conditions (<100 lx).
Detection Distance
50
45
40
35
30
25
20
15
10
5
10
20
30
40
50
60
70
80
90
100
R1(kohm)
Figure 3. Proximity Detection Distance vs. R1 (SFH4650 IR LED 850 nm/40 mW)*
*Note: Detection range measured using Kodak Gray cards (18% reflectance), no IR filter under dark ambient conditions (<1 lx).
Rev. 1.0
9
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| SI1120EK | 功能描述:光学传感器开发工具 Si1120 Eval Kit RoHS:否 制造商:ams 工具用于评估: 接口类型: 最大工作温度: |
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