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EL6281 PDF预览

EL6281

更新时间: 2024-11-17 23:14:47
品牌 Logo 应用领域
ELANTEC 驱动器放大器PC
页数 文件大小 规格书
2页 144K
描述
4-Channel Laser Driver with APC Amp

EL6281 数据手册

 浏览型号EL6281的Datasheet PDF文件第2页 
EL6281C - Product Brief  
4-Channel Laser Driver with APC Amp  
Features  
General Description  
• Read + 3 Write Channel laser  
driver with oscillator & fast I/V  
amplifier  
• Rise time = 0.8 nsec  
• Fall time = 0.8 nsec  
• 200V/µs I/V amplifier  
• 100X gain, 100mA low noise read  
channel  
• 200X gain, 200mA write channel  
The EL6281C is a combination read + 3 write level laser driver with  
IV amplifier. A dual amplitude, dual frequency RF oscillator sums on  
the output for laser noise reduction during read or write. All these  
functions are provided in 24-lead QSOP and LPP packages.  
The ENABLE pin enables the read & write channels. Positive current  
supplied to the IIN lines, through user selected resistors, allow the full  
scale range of each amplifier to be matched to the full scale range of  
the users control DACs. When the WEN pins are switched low, the  
respective current is summed to the output with 1ns rise and fall times.  
• Two 100X gain, 100mA write  
channels  
• 500MHz, 100mAP-P Oscillator  
with dual frequency and amplitude  
control  
The 100mAP-P (max) oscillator is switched on and off by the OSCEN  
line. The R/W line allows the oscillator to operate at one amplitude  
and frequency when R/W is high, and another amplitude and fre-  
quency when R/W is low.  
The entire chip is powered down when ENABLE is low. The user can  
calibrate the gain of the I/V amplifier. With a slew rate around  
200V/µs, the I/V amplifier can normally settle to less than 1% within  
30ns.  
• 3.3V compatible logic signals  
• Single +5V supply  
Applications  
• CD-RW to 16X  
• CD-R to 32X  
• Writable Optical Disk Drives  
Connection Diagram  
Ordering Information  
1
2
3
4
5
6
7
8
9
VOUT  
VREF  
IINR  
PDIN 24  
VCC 23  
Part No.  
EL6281CU  
EL6281CL  
Temp. Range  
0°C to +70°C  
0°C to +70°C  
Package  
QSOP-24  
LPP-24  
Outline #  
MDP0040  
MDP0046  
VCC 22  
IIN2  
RF1  
1
2
3
4
5
6
7
19 VCC  
18 IOUT  
17 GND  
16 GND  
IIN2  
IOUT 21  
RFREQ1  
IIN3  
GND 20  
IIN3  
IIN4  
RF2  
GND 19  
Thermal Pad  
IIN4  
RAMP1 18  
RAMP2 17  
ENABLE 16  
OSCEN 15  
VCC 14  
RAMP1  
15  
14  
13  
RFREQ2  
RWB  
RWB  
GND  
RAMP2  
ENABLE  
10 GND  
11 WEN4  
12 WEN3  
WEN2 13  
24-Pin LPP Top View  
Note: All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a “controlled document”. Current revisions, if any, to these  
specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.  
© 2001 Elantec Semiconductor, Inc.  

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