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PDF LS521 Data sheet ( Hoja de datos )
| Número de pieza | LS521 | |
| Descripción | ILLUMINATION-TO-DIGITAL CONVERTER | |
| Fabricantes | SiTi | |
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Hay una vista previa y un enlace de descarga de LS521 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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LS521
Version
Issue Date
File Name
Total Pages
: A.002
: 2015/07/10
: SP-LS521-A.002.doc
: 12
ILLUMINATION-TO-DIGITAL CONVERTER
with SMBUS INTERFACE
新竹市科學園區展業一路 9 號 7 樓之 1
SILICON TOUCH TECHNOLOGY INC.
9-7F-1, Prosperity Road I, Science Based Industrial Park,
Hsin-Chu, Taiwan 300, R.O.C.
Tel：886-3-5645656 Fax：886-3-5645626
1 page  
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
Max. illuminance range(LUX)
RL(KΩ )
1000
12
2000
6
5000
2.4
Table 1. Maximum illuminance range vs RL
14000
0.857
For example, if we need the maximum illuminance range to be 2000 lux, then
RL 1200 6(K)
0.1 2000
where 1200 and 0.1 are constants, 2000 is max. lux
REJECTION OF LIGHT RIPPLE
Cut off frequency(Hz)
RL (kΩ )
CL (uF)
60
6
0.45
2.4
1.2
Table 2. RL , CL setting
For example, if light ripple(f)=60Hz, RL=6kΩ , then
CL 1 1 0.4421(uF )
2R f 2 6000 60
1
6 2.4
27 67
LS521
AC OPERATING CHARACTERISTICS (VDD=3V, TA=25℃ unless otherwise noted)
Item
Symbol
Clock frequency
f(SMBCLK)
Bus free time between start and stop condition
Hold time after (repeated) start condition. After this
period, the first clock is generated.
t(BUF)
t(HDSTA)
Repeated start condition setup time
t(SUSTA)
Stop condition setup time
t(SUSTO)
Data hold time
t(HDDAT)
Data setup time
t(SUDAT)
SMBCLK clock low period
t(LOW)
SMBCLK clock high period
t(HIGH)
Detect clock low timeout
t(TIMEOUT)
Clock/data fall time
tF
Clock/data rise time
tR
Input pin capacitance
Ci
PARAMETER MEASUREMENT INFORMATION
Min. Typ. Max. Unit
10 - 400 kHz
4.7 -
- us
4 - - us
4.7 -
- us
4 - - us
300 -
- ns
250 -
- ns
4.7 -
- us
4 - 50 us
25 - 35 ms
- - 300 ns
- - 1000 ns
- - 10 pF
ILLUMINATION-TO-DIGITAL CONVERTER with SMBUS INTERFACE
Version：A.002 Page4
5 Page 
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
IPLCC6 2mm x 2mm x 0.63mm
LS521
ILLUMINATION-TO-DIGITAL CONVERTER with SMBUS INTERFACE Version：A.002 Page10
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet LS521.PDF ] | |
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