EL6283C - Product Brief
3-Channel Laser Diode Driver w/Oscillator & APC Amplifier
Features
General Description
• Shrink-Small Outline Package
The EL6283C is a high-performance three channel laser driver that
provides controlled current to a grounded laser diode. Write channels
2 and 3 can provide up to 200mA per channel of DC or pulsed current,
with switching speeds of approximately one nanosecond rise/fall time.
All three channels are summed together at the IOUT output, allowing
the user to create multilevel waveforms in order to optimize laser
diode performance. The level of the output current is set by an analog
voltage applied to an external resistor which converts the voltage into
a current at the IIN pin (virtually ground). The current seen at this pin
• Voltage-controlled output current
source to 200mA per channel,
requiring one external set resistor
per channel
• Current-controlled output current
source to 200mA per channel
• Rise time = 0.8ns
• Fall time = 0.8ns
is then amplified to become a current source at pin IOUT
.
• 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%)
An on-chip 500MHz oscillator is provided to allow output current
modulation when in any mode. This is turned on when the OSCEN pin
is held high. Complete control of amplitude and frequency is set by
two external resistors connected to ground at pins RFREQ and RAMP
(see graphs in this data sheet for further explanation).
• Disable feature for power-up
protection and power savings
• Fast Settling APC Amplifier
Output current pulses are enabled when an ‘L’ signal is applied to the
OUTEN pin. 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 all other control
pins.
Applications
• CD-RW applications
• Writable optical drives
• Laser diode current switching
The EL6283C also includes a fast settling APC amplifier designed to
interface directly with the front end monitor diode and the sample-
and-hold amplifier for read and write power control. Its 100MHz
bandwidth and 30ns settling time enable up to 16X CD-RW design.
Ordering Information
Part No
Temp. Range
Package
Outline #
EL6283CU
0°C to +70°C
QSOP-16
MDP0041
Connection Diagram
1
2
3
4
5
6
7
8
VOUT
VREF
IINR
PDIN 16
VCC 15
IOUT 14
RFREQ
IIN2
GND 13
RAMP 12
ENABLE 11
OSCEN 10
IIN3
OUTEN3
OUTEN2
9
VCC
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.
© 2000 Elantec Semiconductor, Inc.
5秒后页面跳转
STM32H743技术深度剖析与应用案例探索
LM321中文资料解析：引脚功能介绍、技术特点、技术特性分析
74HC14芯片资料介绍：性能特性分析、引脚介绍
LM1875芯片手册：功放参数分析、引脚说明、电路设计要点
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
技术参数
数据手册
如果您发现信息不准确，
