Datasheet > AD9665ACPZ-REEL7

AD9665ACPZ-REEL7

更新时间： 2024-11-11 12:53:55

品牌	Logo	应用领域
亚德诺 - ADI		振荡器驱动器二极管激光二极管
页数	文件大小	规格书
17页	447K
描述
4-Channel, LVDS, Dual-Output, Laser Diode Driver with Oscillator

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AD9665ACPZ-REEL7 数据手册

4-Channel, LVDS, Dual-Output,

Laser Diode Driver with Oscillator

AD9665

FUNCTIONAL BLOCK DIAGRAM

FEATURES

W3SET

W3DIS

W3DISN

Dual, current-controlled output current sources with 4 input

channels

WRITE

CHANNEL 3

TTL-selectable output

W2SET

W2DIS

W2DISN

Stable on-chip oscillators with independent frequency and

amplitude control

WRITE

OUTPUT A

OUTPUT B

ENABLE

LD1

LD2

CHANNEL 2

TTL- or LVDS-selectable write channel enables negative logic

Independent TTL oscillator enables positive logic

170 mA minimum output current for the read channel

510 mA minimum output current for Write Channel 1

330 mA minimum output current for Write Channel 2

165 mA minimum output current for Write Channel 3

950 mA typical total output current

W1SET

W1DIS

W1DISN

WRITE

CHANNEL 1

RSET

RDIS

READ CHANNEL

OSCILLATOR

Typical rise time/fall time of 0.8 ns

Low power consumption

OSCEN

Single 5 V power supply ( 10%)

INS OUTSEL

ADJ2

ADJ1

ADJ2

ADJ1

Figure 1. 4-Channel, LVDS, Laser Driver Block Diagram

APPLICATIONS

DVD-R, DVD+R, DVD-RW, DVD+RW, DVD-RAM

supercombo drives

Magneto-optical (MO) drives

Laser diode current switching

W3DISN

W3DIS*

GND

INS

GENERAL DESCRIPTION

LD1

GND

LD2

AD9665

GND

The AD9665 is a laser diode driver for high performance CD-RW

and DVD recordable drives. It includes four channels for four

different optical power levels: the read channel generates a

continuous output power level, whereas Channel 1, Channel 2,

and Channel 3 can be used as write channels that can be

controlled with an LVDS or TTL interface. The WxDIS and

LFCSP

W2DISN

W2DIS*

W1DISN

W1DIS*

5mm

(Not to Scale)

× 5mm

RDIS

pins are active low logic. The OSCEN pin is controlled by

*TTL ACTIVE LOW

NOTES

an active high TTL signal. All active channels are summed at

the output where Write Channel 1 can contribute at least

325 mA output current, and Write Channel 2 and Write

Channel 3 can contribute at least 250 mA and 150 mA,

respectively. The level of the output current is set by an

external resistor, which converts this voltage into a current

at the WxSET pin.

1. THE EXPOSED PAD SHOULD BE CONNECTED TO GROUND.

Figure 2. 4-Channel, LVDS, Laser Driver Pin Configuration

An on-chip oscillator is provided to allow output current

modulation and to reduce laser-mode hopping. Four external

resistors permit the setting of two distinct values for the

frequency and swing of the oscillator. The oscillator can output

up to 100 mA p-p of current (push-pull oscillator) with a

frequency range of 200 MHz to 500 MHz.

Rev. E

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registeredtrademarks arethe property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

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AD9665ACPZ-REEL7 替代型号

型号	品牌	替代类型	描述	数据表
AD9665ACPZ-REEL	ADI	完全替代	4-Channel, LVDS, Dual-Output, Laser Diode Driver with Oscillator

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