T0820

更新时间： 2024-11-24 22:20:47

品牌	Logo	应用领域
爱特美尔 - ATMEL		振荡器驱动器射频
页数	文件大小	规格书
11页	188K
描述
4 CHANNEL LASER DRIVER WITH RF OSCILLATOR

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中文翻译

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数据手册

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T0820 数据手册

Features

• Current-controlled Output Current Source with 4 Input Channels

• Low-power Consumption

• Output Current up to 150 mA, Read Channel and Channel 2

• Output Current up to 200 mA, Channel 3 and Channel 4

• Total Output Current to 300 mA

• Rise Time 1.0 ns, Fall Time 1.1 ns

• On-chip RF Oscillator

• Control Frequency and Swings by Use of 2 External Resistors

• Oscillator Frequency Range from 200 MHz to 600 MHz

• Oscillator Swing to 100 mA

• Single 5 V Power Supply

• Common Enable/Disable Input

• TTL/CMOS Control Signals

• Small SSO16 Package

4-channel Laser

Driver with RF

Oscillator

Application

• DVD-RAM

• DVD-RW

• DVD+RW

T0820

• CD-RW

• Writable Optical Drives

Description

The T0820 is a laser diode driver for the operation of a grounded laser diode for

writable optical drives. It includes four channels for four different optical power levels

which are controlled by a separate IC. The read channel generates a continuous

output level whereas channels 2 to 4 are provided as write channels with very fast

switching speeds. Write current pulses are enabled when a "low" signal is applied to

the NE pins. All channels are summed together at the IOUT pin. Read channel and

channel 2 can contribute up to 150 mA and channels 3 and 4 up to 200 mA to the total

output current of up to 300 mA. A total gain of 100 is provided between each reference

current input and the selected output. Although the reference inputs are current inputs

voltage control is possible by using external resistors. Frequency and swing can be set

by two external resistors. Oscillation is enabled by a "high" at the ENOSC pin. Com-

plete output current and oscillator switch-off is achieved by a `low' at the ENABLE

input.

Figure 1. Block Diagram

Channel 4

Channel 3

NE4

NE3

Channel 2

IOUT

NE2

Read channel

RF oscillator

ENABLE

ENOSC

Rev. 4506F–DVD–09/04

12 3 4 5 6 7...11

中文翻译

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与T0820相关器件

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T0820_05	ATMEL	获取价格	4-channel Laser Driver with RF Oscillator
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T0820H-6C	JJM	获取价格	高结温双向可控硅
T0820H-6E	JJM	获取价格	高结温双向可控硅
T0820H-6F	JJM	获取价格	高结温双向可控硅
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T0820H-6K	JJM	获取价格	高结温双向可控硅
T0820H-8A	JJM	获取价格	高结温双向可控硅
T0820H-8C	JJM	获取价格	高结温双向可控硅
T0820H-8E	JJM	获取价格	高结温双向可控硅