SP8107EH-L

更新时间： 2024-10-01 13:13:55

品牌	Logo	应用领域
西伯斯 - SIPEX		驱动器
页数	文件大小	规格书
3页	147K
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SP8107EH-L 数据手册

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SP8107

Three Channel High Performance Laser Driver

FEATURES

•

Three current controlled inputs with independent

ENABLE/DISABLE

•

Two selectable outputs for grounded laser diodes

Output current up to 400mA (250mA per input channel)

Independent swing for each output channel controlled

by external resistor

On-chip oscillator with resistor controlled frequency

Single 5V power supply

Common ENABLE and oscillator ENABLE inputs

TTL/CMOS logic level control signals

Small SSOP16 package

Vcc

Iout A

GND

RSA

RSB

•

SP8107

SSOP-16

EN2

EN3

Iout B

SELA

Vcc

APPLICATION

ENABLE

OSCEN

•

DVD-RAM with CD-RW capability

DVD-RW with CD-RW capability

Writable data storage optical devices

GENERAL DESCRIPTION

The SP8107 is a three channel laser diode driver specifically designed for high speed DVD-RW or DVD-

RAM applications. It operates two grounded laser diodes (650nm for DVD and 780nm for CD) and

features three input channels that allow setting of three different optical power levels. The first channel

(IR) has lower gain (100mA/mA) and output current (up to 200mA) and is used as a read channel. The

second (I2) and third (I3) channels have higher gain (250mA/mA) and output current (up to 250mA) and

are used as write channels. Each write channel may be switched on/off at very fast switching speeds with

TTL/CMOS logic level signals applied to EN2 and EN3 inputs - channels are enabled at low logic level

and disabled at high logic level. Outputs of all channels are summed together and connected to one of the

outputs I_OUTA or I_OUTB depending on logic signal at the input SELA. High logic level at SELA selects

output I_OUTA, while low logic level selects output I_OUTB. Inputs IR, I2, and I3 are current-controlled with

200 ohm DC impedance but allow voltage control by using external limiting resistors.

An on-chip oscillator is used to reduce laser mode hopping in read mode. The frequency of this oscillator

may be changed by an external resistor connected to the RF pin. Oscillator swing can be set separately for

_OUTA and I_OUTB outputs by two resistors connected to RSA and RSB pins respectively. The oscillator is

enabled by high logic level at the OSCEN pin.

Low logic level at the ENABLE pin disables the entire device. Supply current in disabled mode is below

100uA. Pins EN2 and EN3 have internal pull-up resistors. Pins ENABLE, OSCEN, and SELA have

internal pull-down resistors.

Rev. 09/05/03

SP8107 – Three Channel Laser Driver

SIPEX RESERVES THE RIGHT TO MAKE CHANGES TO THIS DATASHEET. CALL FOR UPDATES: 1-978-667-8700.

SIPEX CONFIDENTIAL, ADVANCED & PROPRIETARY. DO NOT DISTRIBUTE OR

COPY

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与SP8107EH-L相关器件

型号	品牌	获取价格	描述	数据表
SP810EK-2.3/TR	SIPEX	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, PDSO3, TO-236AB, SOT-23, 3 PIN
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SP810EK-2.6/TR	SIPEX	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, PDSO3, TO-236AB, SOT-23, 3 PIN
SP810EK-2.6-L	SIPEX	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, PDSO3, LEAD FREE, SOT-23, 3 PIN
SP810EK-2.6-L/TR	SIPEX	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, PDSO3, LEAD FREE, SOT-23, 3 PIN
SP810EK-2.9/TR	SIPEX	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, PDSO3, TO-236AB, SOT-23, 3 PIN
SP810EK-2.9-L	SIPEX	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, PDSO3, LEAD FREE, SOT-23, 3 PIN
SP810EK-2.9-L/TR	SIPEX	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, PDSO3, LEAD FREE, SOT-23, 3 PIN
SP810EK-2-3	SIPEX	获取价格	3 Pin Microprocessor Supervisor Circuit
SP810EK-2-3/TR	SIPEX	获取价格	3 Pin Microprocessor Supervisor Circuit

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