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參數資料
| 型號： | EL6258C |
| 英文描述： | 3-Channel Laser Driver + Oscillator + APC Amplifier |
| 中文描述： | 3通道激光驅動器振蕩器apc的放大器 |
| 文件頁數： | 1/2頁 |
| 文件大小： | 135K |
| 代理商： | EL6258C |
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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General Description
The EL6258C is a high-performance three channel laser diode current
amplifier that provides controlled current to a grounded laser diode.
Channels 2 and 3 must be used as the write channels, with switching
speeds of approximately one nanosecond rise/fall time. All three chan-
nels are summed together at the IOUT output, allowing the user to
create multilevel waveforms. Each level of output current is set by an
analog voltage applied to an external resistor which converts the volt-
age into a current at the IIN pins (virtually ground). The current seen at
these pins is then amplified by 100X (150X on CH3) to become a cur-
rent source at pin IOUT.
An on-chip 500MHz oscillator is provided to allow current modula-
tion when in the read mode. This is turned on when the OSCEN pin is
held high (floating not recommended). Complete control of amplitude
and frequency is set by two external resistors connected to ground at
pins RFREQ and RAMP (see graphs for further explanation). The
oscillator will also turn off whenever either of the OUTEN pins for
channels 2 or 3 (the write channels) are low (see truth table).
Output current pulses are enabled when an ‘L’ signal is applied to the
OUTEN pins. No output current flows when OUTEN is ‘H’ and addi-
tional laser diode protection is provided since the OUTEN input will
float high when open. Complete IOUT shut-off is also achieved by
holding the ENABLE pin low, which will override the OUTEN con-
trol pins.
The EL6258C also includes a fast settling APC amplifier designed to
interface directly with the power monitor photodiode and the sample-
and-hold amplifier, for read and write power control.
Connection Diagram
1
2
3
4
16
15
14
13
5
6
7
12
11
9
8
10
20
19
18
17
24
23
22
21
GND
IINR
IIN2
GND
RFREQ
IIN3
OUTENR
OUTEN2
OUTEN3
GND
VREF
VOUT
GND
VCC
IOUT
GND
RAMP
ENABLE
OSCEN
VCC
GND
PDIN
Features
High-performance laser diode
driver
Voltage-controlled output current
source requiring one external set
resistor per channel
Current-controlled output current
source
Rise time = 1.0ns
Fall time = 1.1ns
On chip oscillator with frequency
and amplitude control by use of
external resistors to ground
Oscillator to 500MHz
Oscillator to 100mA pk/pk
Single +5V supply (±10%)
Current amplification = 100
Disable feature for power-up
protection and power savings
TTL/CMOS control signals
Fast settling APC amplifier
Applications
DVD drives
CD-RW applications
Writable optical drives
Laser diode current switching
Ordering Information
Part No
Temp. Range
Package
Outline #
EL6258CU
0°C to +70°C
QSOP-24
MDP0040
EL6258C - Product Brief
3-Channel Laser Driver + Oscillator + APC Amplifier
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相關PDF資料 |
PDF描述 |
|---|---|
| EL6258CU | 3-Channel Laser Driver + Oscillator + APC Amplifier |
| EL6259CU | Laser Driver with Ocillator and APC |
| EL6259 | Low Noise 4-Channel Laser Diode Driver + Oscillator |
| EL6259C | Low Noise 4-Channel Laser Diode Driver + Oscillator |
| EL6261C | Quad 20MHz Quad, 80MHz, Switched Gain Pre-Amp |
相關代理商/技術參數 |
參數描述 |
|---|---|
| EL6258CU | 制造商:ELANTEC 制造商全稱:ELANTEC 功能描述:3-Channel Laser Driver + Oscillator + APC Amplifier |
| EL6258E | 制造商:STMicroelectronics 功能描述:DMOS Dual Full Bridge Driver 36-Pin PowerSO Tube |
| E-L6258E | 功能描述:馬達/運動/點火控制器和驅動器 Dual Full Bridge RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| E-L6258EA | 功能描述:馬達/運動/點火控制器和驅動器 PWM CTRL Motor DRV 1.5A 12V to 40V BCD RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| E-L6258EATR | 制造商:STMicroelectronics 功能描述: |
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