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參數(shù)資料
| 型號(hào)： | EL7900 |
| 廠商： | Intersil Corporation |
| 英文描述： | Ambient Light Photo Detect IC(感光傳感器) |
| 中文描述： | 環(huán)境亮度檢測集成電路（感光傳感器） |
| 文件頁數(shù)： | 4/7頁 |
| 文件大?。?/td> | 165K |
| 代理商： | EL7900 |
4
FN7377.6
August 1, 2007
Block Diagram
Application Information
Product Description
The EL7900 is a light-to-current optical sensor combining
photodiodes and current amplifiers on a single monolithic IC.
The photodiodes are temperature-compensated and their
spectrum resembles the human eye response. The output
current is directly proportional to the intensity of light falling
on the photodiodes. For 100 lux of input fluorescent light, the
EL7900 has an output current of 60μA.
The EL7900 is housed in an ultra-compact surface mount
clear plastic package.
Light-to-Current and Voltage Conversion
The EL7900 has a responsiveness that is directly
proportional to the intensity of light intercepted by the
photodiodes. Although the conversion rate varies depending
on the light sources (fluorescent light, incandescent light or
direct sunlight), in general for a fluorescent light, the light-to-
current conversion is:
Here, I
OUT
is the output current in μA, and L
INPUT
is the
input light in lux.
For some applications, a load resistor is added between the
output and the ground as shown in Figure 1. The output
voltage can be expressed in the following equation:
Here, V
OUT
is the output voltage and R
LOAD
is the value of
the load resistor added. The compliance of the EL7900's
output circuit may result in premature saturation of the
output current and voltage when an excessively large
R
LOAD
is used. The output compliance voltage is 300mV
below the supply voltage as listed in V
O(MAX)
of the
Electrical Specifications table on page 2.
FIGURE 9. I
OUT
vs LUMINANCE
Typical Performance Curves
0
1
2
3
4
5
0
1k
2k
3k
4k
5k
6k
7k
8k
9k
10k
LUMINANCE (lux)
I
O
FLUORESCENT
LIGHT SOURCE
Pin Descriptions
PIN
NAME
DESCRIPTION
1
VCC
Supply, 2.5V to 5.5V
2
GND
Ground
3
EN
Enable
4
NC
No connect
5
Output
Current output pin
ENABLE
OUTPUT
GND
VCC
1
2
5
3
I
OUT
------------------
L
INPUT
×
=
(EQ. 1)
V
OUT
I
OUT
R
LOAD
×
--------------------
L
INPUT
R
LOAD
×
×
=
=
(EQ. 2)
EL7900
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EL7900_07 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Ambient Light Photo Detect IC |
| EL7900ILCZ | 功能描述:環(huán)境光傳感器 EL7900ILCZ AMBIENT LIGHT PHOTO DETECT RoHS:否 制造商:Vishay Semiconductors 工作電源電壓: 峰值波長:570 nm 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:T-1 封裝:Bulk |
| EL7900ILCZ-EVALZ | 功能描述:光學(xué)傳感器開發(fā)工具 EL7900ILCZEVALZ EVAL BRD ROHS CMPL RoHS:否 制造商:ams 工具用于評(píng)估: 接口類型: 最大工作溫度: |
| EL7900ILCZ-T13 | 功能描述:IC PHOTO DETECT AMBIENT 5-DFN RoHS:是 類別:傳感器，轉(zhuǎn)換器 >> 光學(xué) - 光電探測器 - 環(huán)境光傳感器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 產(chǎn)品變化通告:Product Discontinuation 25/Jun/2012 標(biāo)準(zhǔn)包裝:2,500 系列:- 帶接近傳感器:無 波長:- 電源電壓:1.7 V ~ 2 V 電流 - 暗（標(biāo)準(zhǔn)）:- 電流 - 光（典型值）:- 輸出類型:數(shù)字 - I²C 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:6-UDFN 裸露焊盤 包裝:帶卷 (TR) |
| EL7900ILCZ-T7 | 功能描述:環(huán)境光傳感器 EL7900ILCZ AMBIENT LIGHT PHOTO DETECT RoHS:否 制造商:Vishay Semiconductors 工作電源電壓: 峰值波長:570 nm 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:T-1 封裝:Bulk |
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