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參數(shù)資料
| 型號： | D381A |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Electroluminescent Lamp Driver IC |
| 中文描述： | 電致發(fā)光燈驅(qū)動IC |
| 文件頁數(shù)： | 6/14頁 |
| 文件大?。?/td> | 373K |
| 代理商： | D381A |
6
Designing With D381A
I. Lamp Frequency Capacitor (CLF) Selection
Selecting the appropriate value of lamp frequency capacitor (CLF) for the low frequency oscillator will specify the
output frequency of the D381A EL driver. Lamp frequencies of 200-500 Hz are typically used. Figure 1 graphically
represents the inversely proportional relationship between the CLF capacitor value and the oscillator frequency.
Alternatively, the lamp frequency may also be controlled with an external clock signal. There is an internal frequency
divider in the device so that the output lamp frequency will be half of the input clock signal. For example, if a 500Hz
input clock signal is used, the resulting lamp frequency will be 250Hz. The clock signal input voltage should not exceed
V+.
The selection of the CLF value can also affect the brightness of the EL lamp because of its control of the lamp frequency
(LF). Although input voltage and lamp size can change EL lamp frequency as well, LF mainly depends on the CLF
value selected or the frequency of the input clock signal to CLF. Figure 2 shows typical brightness of a D381A circuit
with respect to lamp frequency. In this example, the inductor and CHF values were kept constant while varying LF.
Figure 1: Typical Lamp Frequency vs. CLF Capacitor
Figure 2: Luminance vs. Lamp Frequency
(V+=3.0V, 2.4in
2
Durel 3 Green EL Lamp Load)
0
100
200
300
400
500
600
700
800
900
0
5
10
15
20
25
30
CLF (nF)
L
0
1
2
3
4
5
6
7
0
200
400
600
800
1000
1200
Lamp Frequency (Hz)
L
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| D381BB-CSP | 制造商:Rogers Corporation 功能描述:D381B ELECTROLUMINESCENT LAMP DRIVER IC |
| D381N10K | 功能描述:電位計(jì) 10 K Ohms 10% 1W Solder Lug RoHS:否 制造商:Bourns 產(chǎn)品:Musical Syst Potentiometer 安裝風(fēng)格:Panel 錐度:Audio, Linear 轉(zhuǎn)數(shù): 電阻:500 kOhms 元件類型:Carbon 軸類型:Round / Plain 端接類型:Solder Lug 電壓額定值:200 V 功率額定值:0.2 W 容差:20 % |
| D381N5K | 功能描述:電位計(jì) 5 K Ohms 10% 1W Solder Lug RoHS:否 制造商:Bourns 產(chǎn)品:Musical Syst Potentiometer 安裝風(fēng)格:Panel 錐度:Audio, Linear 轉(zhuǎn)數(shù): 電阻:500 kOhms 元件類型:Carbon 軸類型:Round / Plain 端接類型:Solder Lug 電壓額定值:200 V 功率額定值:0.2 W 容差:20 % |
| D381V3JD | 制造商:The Cherry Corporation 功能描述:Switch, Miniature, Snap Action |
| D3820-25 | 制造商:American Technical Ceramics Corp 功能描述:DIGITAL PROCESS METER 0-10VDC INPUT 制造商:ATC 功能描述:DIGITAL PROCESS METER 0-10VDC INPUT |
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