lmh6533 National Semiconductor Corporation, lmh6533 Datasheet

lmh6533

Manufacturer Part Number

lmh6533

Description

Four - Channel Laser Diode Driver With Dual Output, Lvds Interface And Hfm Oscillator

Manufacturer

National Semiconductor Corporation

Datasheet

1.LMH6533.pdf (11 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

lmh6533SP

Manufacturer:

NS/国半

Quantity:

20 000

Current page: 1 of 11
Download datasheet (232Kb)

LMH6533

Four –Channel Laser Diode Driver with Dual Output,

LVDS Interface and HFM Oscillator

General Description

The LMH

tion DVD/CD recordable and rewritable systems. The part

contains two high-current outputs for reading and writing the

DVD (650 nm) and CD (780 nm) lasers. Functionality in-

cludes read, write and erase through four separate switched

current channels. The channel currents are summed to-

gether at the selected output to generate multilevel wave-

forms for reading, writing and erasing of optical discs. The

LVDS interface delivers DVD write speeds of 12x and higher

while minimizing noise and crosstalk. The LMH6533 is opti-

mized for both speed and power consumption to meet the

demands of next generation systems. The part features a

150 mA read channel plus one 300 mA and two 150 mA write

channels, which can be summed to allow a total output

current of 500 mA or greater. The channel currents are set

through four independent current inputs.

The part is manufactured in National Semiconductor’s

VIP10

and trench isolation for very high switching speeds at low

power levels. An on-board High-Frequency Modulator (HFM)

oscillator helps reduce low-frequency noise of the laser and

is enabled with the ENOSC pin. The fully differential oscilla-

tor circuit minimizes supply line noise, easing FCC approval

of the overall system. The SELB pin (active HIGH) selects

the output channel and oscillator settings. External resistors

determine oscillator frequency and amplitude for each set-

ting. The write and erase channels can be switched on and

off through dedicated LVDS interface pins.

Block Diagram

LMH

VIP10

LLP

™

is a registered trademark of National Semiconductor.

is a trademark of National Semiconductor Corporation.

™

is a trademark of National Semiconductor Corporation.

process, which features bonded wafer technology

™

6533 is a laser diode driver for use in combina-

DS200277

Features

n Fast switching: Rise and fall times

n Low voltage differential signaling (LVDS) channels

n Low output current noise:

n Dual output: Selectable by SELB pin (active HIGH)

n Four independent current channels

n Integrated AC Coupled HFM Oscillator

n Complete shutdown by ENABLE pin

n 5V single-supply operation

n Logic inputs TTL and CMOS compatible

n Space saving Leadless Leadframe Package LLP

Applications

n Combination DVD/CD recordable and rewritable drives

n DVD camcorders

n DVD video recorders

enable interface for the fast switching lines

— Gain of 300, 300 mA write channel

— Gain of 150, 150 mA low-noise read channel

— Two gain of 150, 150 mA write channels

— 500 mA minimum combined output current

— Selectable frequency and amplitude setting by

— 200 MHz to 600 MHz frequency range

— Amplitude to 100 mA peak-to-peak modulation

external resistors

20027701

0.5nA/

0.8 ns

www.national.com

May 2004

-28

Related parts for lmh6533

Related keywords

lmh6533 datasheet
lmh6533 data sheet
lmh6533 pdf datasheet
lmh6533 component
lmh6533 part
lmh6533 distributor
lmh6533 RoHS
lmh6533 datasheet download