T0820

更新时间： 2024-02-02 13:08:03

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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技术参数
数据手册

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T0820 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
零件包装代码：	SOIC	包装说明：	LSSOP, SSOP16,.25
针数：	16	Reach Compliance Code：	compliant
风险等级：	5.6	Is Samacsys：	N
接口集成电路类型：	INTERFACE CIRCUIT	JESD-30 代码：	R-PDSO-G16
JESD-609代码：	e3	长度：	4.9 mm
湿度敏感等级：	1	功能数量：	1
端子数量：	16	最高工作温度：	70 °C
最低工作温度：		封装主体材料：	PLASTIC/EPOXY
封装代码：	LSSOP	封装等效代码：	SSOP16,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	260	电源：	5 V
认证状态：	Not Qualified	座面最大高度：	1.7 mm
子类别：	Display Drivers	最大供电电压：	5.5 V
最小供电电压：	4.5 V	标称供电电压：	5 V
表面贴装：	YES	温度等级：	COMMERCIAL
端子面层：	Matte Tin (Sn) - annealed	端子形式：	GULL WING
端子节距：	0.635 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	40	Base Number Matches：	1

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

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