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EL6281 参数 Datasheet PDF下载

EL6281图片预览
型号: EL6281
PDF下载: 下载PDF文件 查看货源
内容描述: 与APC放大器4通道激光驱动器 [4-Channel Laser Driver with APC Amp]
分类和应用: 驱动器放大器PC
文件页数/大小: 2 页 / 144 K
品牌: ELANTEC [ ELANTEC SEMICONDUCTOR ]
 浏览型号EL6281的Datasheet PDF文件第2页  
EL6281C - Product Brief
EL6281C - Product Brief
4-Channel Laser Driver with APC Amp
Features
• 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
• Two 100X gain, 100mA write
channels
• 500MHz, 100mA
P-P
Oscillator
with dual frequency and amplitude
control
• 3.3V compatible logic signals
• Single +5V supply
General Description
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.
The 100mA
P-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.
Applications
• CD-RW to 16X
• CD-R to 32X
• Writable Optical Disk Drives
Connection Diagram
22 VOUT
1 VOUT
Outline #
Ordering Information
Part No.
EL6281CU
EL6281CL
Temp. Range
0°C to +70°C
0°C to +70°C
Package
QSOP-24
LPP-24
MDP0040
MDP0046
PDIN 24
23 VREF
24 IINR
VCC 23
VCC 22
IOUT 21
GND 20
GND 19
RAMP1 18
RAMP2 17
RWB 6
IIN2 1
RF1 2
IIN3 3
IIN4 4
RF2 5
21 PDIN
2 VREF
3 IINR
4 IIN2
5 RFREQ1
6 IIN3
7 IIN4
8 RFREQ2
9 RWB
10 GND
11 WEN4
12 WEN3
20 VCC
19 VCC
18 IOUT
17 GND
16 GND
15 RAMP1
14 RAMP2
13 ENABLE
Thermal Pad
October 25, 2001
ENABLE 16
OSCEN 15
VCC 14
WEN2 13
24-Pin LPP Top View
GND 7
WEN2 10
VCC 11
OSCEN 12
WEN4 8
WEN3 9
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.