LX1720-01CDB Microsemi Analog Mixed Signal Group, LX1720-01CDB Datasheet

LX1720-01CDB

Manufacturer Part Number

LX1720-01CDB

Description

IC AMP AUDIO PWR 10W STER 44SSOP

Manufacturer

Microsemi Analog Mixed Signal Group

Series

AudioMAX™r

Type

Class Dr

Datasheet

1.LX1720-01CDB.pdf (6 pages)

Specifications of LX1720-01CDB

Output Type

2-Channel (Stereo)

Max Output Power X Channels @ Load

10W x 2 @ 8 Ohm

Voltage - Supply

7 V ~ 15 V

Features

Mute

Mounting Type

Surface Mount

Package / Case

44-SSOP

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Current page: 1 of 6
Download datasheet (178Kb)

H E

The LX1720 is a highly-integrated,

Switching Class-D Stereo Power Am-

plifier Controller IC with power and

size features that make it ideal for multi-

media computer applications, as well as

other applications where high fidelity

sound is required.

15V, the LX1720 is designed to operate

over the full 20Hz to 20kHz audio range.

Signal distortion measurements using

industry standard 1kHz signal yields THD

+ noise levels < 1% (10 watts output).

IMPORTANT: For the most current data, consult LinFinity's web site: http://www.linfinity.com.

Audio sample from "Hold On Tight"

by Electric Light Orchestra

With input voltage ranging from 7V-

100

N F I N I T E

- Average Power Out for 20sec. approx. 512mW

- Across 8.6 Ohm Load

11861 W

O W E R

ESTERN

O F

I N

VENUE

Append the letter "T" to part number. (i.e. LX1720-01CDBT)

Seconds

N N O V A T I O N

I N I T Y

, G

Its high efficiency (>92%) eliminates the

need for heat sinks — even while deliv-

ering more than 10W

per channel (20W

SO-8 power FETs.

only by external FETs and available sup-

ply voltage.

mance capabilities for notebooks, the

LX1720 is equally attractive for multime-

dia systems or to drive full-size home

theatre speakers.

ARDEN

The LX1720's output power is limited

While offering breakthrough perfor-

Linfinity's LX1720

Class-D Amplifier

Note: Available in Tape & Reel.

Highly Integrated

Linear Amplifier

Maximum

ROVE

I C R O E L E C T R O N I C S

VDD

, CA. 92841, 714-898-8121, F

RMS

stereo) with 0.1 ohm

RMS

across 8 ohms

Plastic SSOP

44-pin

N C

Notebook Computers:

Desktop Computers:

: 714-893-2570

APPLICATION NOTE AN-11

Integrated Switching (Class-D) Stereo

Power Amplifier Controller IC

Delivers >10W

(20W

Output Power Limited Only By External

FETs And Available Supply Voltage

Will Drive A Wide Range Of Speakers

High Efficiency (>92%)

Due To High Efficiency, Power FETs Do Not

Require Heatsinking

Audio Bandwidth Of 20Hz to 20kHz

Wide Input Voltage Range Of 7V-15V

Low Output Signal Distortion <1%

High Operating Frequency (350kHz) Helps

To Reduce Output Filter Size

Compact Design Minimizes EMI / RFI

Replaces existing internal low power linear

amplifier with a high efficiency Class-D

amplifier

Enables the use of virtually any external

speaker without amplification

Precious battery life is extended

Fully protected power topology can

withstand shorts or external speaker

failures without damage, overheating or

posing fire hazard

Output power capability of up to 20W

per channel in an area less than 3"x3",

without using expensive heatsinks

Greatly reduced power supply

requirements when compared to a linear

solution of same power capabilities

Any speakers can be used including

conventional home stereo speakers

Very light weight circuitry will not add to

the overall weight of the system

Multimedia amplifier can be directly

incorporated on the motherboard using

surface mount components

available on our web site

or call 1-800-LMI-7011

RMS

stereo)

RMS

Across 8

LX1720

/Channel

RMS

Related parts for LX1720-01CDB

LX1720-01CDB Summary of contents

Page 1

... Linfinity's LX1720 Class-D Amplifier Highly Integrated Linear Amplifier 10 15 Seconds Maximum Plastic SSOP DB VDD 44-pin Note: Available in Tape & Reel. Append the letter "T" to part number. (i.e. LX1720-01CDBT CA. 92841, 714-898-8121, F VENUE ARDEN ROVE LX1720 Integrated Switching (Class-D) Stereo Power Amplifier Controller IC Delivers > ...

Page 2

... LX1720 Supply Voltage (PVDD, VDD) ...................................................................... -0.3V to 18V RPWM .................................................................................................... -0. INPUT (R), INPUT (L) .......................................................................... -0. FBK+(R), FBK-(R), FBK+(L), FBK-(L), SLEEP .............................................. -0. MUTE (R), MUTE (L) .................................................................................... -0.3V to 6.0V EAOUT (R), EAOUT (L) ....................................................................... -0. CPWM, CT ............................................................................................. -0. IS+, LIS-, RIS+ ................................................................................................ V Operating Junction Temperature Plastic (DB Package) ............................................................................................ 125ºC Storage Temperature Range ...................................................................... -65°C to 150°C Lead Temperature (Soldering, 10 seconds) ............................................................ 300°C Note 1 ...

Page 3

... RPWM = 75k I = 3mA SINK I = 75mA SINK I = 3mA SOURCE I = 75mA 5.2V (applied externally) SOURCE I = 3mA SINK I = 75mA SINK I = 3mA SOURCE I = 75mA 5.2V (applied externally) SOURCE LX1720 T 70°C. A LX1720 Units Min. Typ. Max. 280 330 380 kHz 2.5 V 200 mV 1 MHz MHz ...

Page 4

... Supply Current Sleep Current Operating Current Sleep To Output Enable Sleep Threshold Mute Section Mute Threshold 4 Symbol Test Conditions SLEEP Input = 0V 25°C A SLEEP Input = 2V 15V, No MOSFETs Connected IN (Continued) LX1720 Units Min. Typ. Max. 6.3 6.5 6.7 500 mV 976 clkcyc 20 µ 976 clkcyc 1 ...

Page 5

... FIGURE 1 — LX1720 Block Diagram LX1720 5 ...

Page 6

... LX1720 FIGURE 2 — Typical Class-D Stereo Switching Amplifier Circuit Application PRODUCTION DATA - Information contained in this document is proprietary to LinFinity, and is current as of publication date. This document may not be modified in any way without the express written consent of LinFinity. Product processing does not necessarily include testing of all parameters ...

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