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參數(shù)資料
| 型號： | VT5363 |
| 廠商： | 意法半導體 |
| 英文描述： | Single-chip USB/PS2 optical mouse |
| 中文描述： | 單芯片USB/PS2光學鼠標 |
| 文件頁數(shù)： | 19/25頁 |
| 文件大?。?/td> | 511K |
| 代理商： | VT5363 |
VT5363
LED selection
19/25
5
LED selection
5.1
Overview
There are a number of LEDs from a range of suppliers which will work well with the VT5363.
It is the responsibility of the customer to ensure that the chosen LED works in their specific
implementation. There are various price/performance trade-offs which may be made if the
customer chooses to do so.
5.2
Key LED parameters
The VT5363 system requires a bright visible RED LED in a standard 5mm (T1 3/4) package.
The ideal viewing angle is 20
o
and the intensity should be at least 900mcd at a forward
current of 20 mA. The key LED parameters are listed in
Table 5
.
Table 5.
5.3
VCSEL and IR illumination
The VT5363 sensor will operate over a wide range of illuminant wavelengths. For devices
operating at approx 850 nm (IR LED or VCSEL), the on-die automatic exposure controller
(AEC) will compensate for the change in sensitivity compared to 640nm (red LED).
Navigation performance may be improved by increasing the illuminated device drive.
Key LED parameters
Parameter
Recommended Value
Notes
Diameter
5mm
Important for fit with lens
Length
8.6mm
Important for fit with lens
Material
AlInGaP
For long-term reliability
Luminous Intensity (@20mA)
900mcd
Minimum value
Viewing Angle
20
o
Half intensity
Mechanical accuracy
+/- 2
o
Accuracy of the die positioning
within the LED body
Colour
Red
Wavelength
640nm +/- 50nm
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相關(guān)代理商/技術(shù)參數(shù) |
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| VT5363_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Single-chip USB/PS2 optical mouse |
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| VT5365V032 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Single-chip optical mouse sensor for wireless applications |
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