LX1705 Datasheet

IC型號(hào)：
LX1705
PDF描述：
Microsemi Corporation [8+8W Stereo Filterless Class-D Ampli...
文件大小：
373.17KB
芯片廠家：
MICROSEMI

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LX1705

廬

8+8W Stereo Filterless Class-D Amplifier

RODUCTION

ATA

HEET

DESCRIPTION

KEY FEATURES

Filter Free Operation

6W +6W Output Power @ 8鈩?/div>

load: THD+N < 1%

High Efficiency > 90%

Full Audio Bandwidth: 20Hz to

20kHz

Low Distortion < 0.25% @ 30%

Max Power, 1kHz

High Signal-to-Noise Ratio:

90dB

Wide Supply Voltage Range

5.0V ~ 15V

5mA Per Channel Typical

Quiescent Current

Turn ON/OFF POP Free

Standby / Mute Feature

Built-in Under Voltage Lockout

Thermal Protection

WWW .

Microsemi

The LX1705 is a fully integrated

stereo class-D CMOS audio amplifier.

optimized

for

highly

efficient

operation and minimum system cost.

The stereo BTL (Bridge-tied-load)

configuration uses 3-level PWM

modulation. This allows eliminating

the LC filter to reduce the system cost

and simplify the system design. The

LX1705 outputs 8W into each of two

channels with better than 90%

efficiency. The entire signal path

from input to output is differential to

reject any sources of common-mode

noise or distortion.

The part features on鈥揵oard H-bridge

output stages with low R

DSON

. External

bootstrap capacitors are all that is

required to provide the gate drive to the

all-NFET output stage since on-board

bootstrap diodes are provided.

The LX1705 also features Mute and

Standby modes, POP-free turn-on and

turn-off, under-voltage lockout for both

input supplies, and multi-level over-

temperature protection.

The LX1705 is offered in a small

thermally efficient footprint, low profile

surface mountable 32-pin Micro Lead

Quad Package (MLPQ) in 5mm x 5

mm.

APPLICATIONS

IMPORTANT:

For the most current data, consult

MICROSEMI鈥檚

website:

http://www.microsemi.com

LCD TV

Car Navigation

MP3 Docking Stations

Portable Sound System

PRODUCT HIGHLIGHT

STBY

AVSS1

PVSS1N

OUT1N

BOOT1N

PVDD1

AVSS2

PVSS2N

OUT2N

BOOT2N

V5V

STATUS

N.C.

ROSC

TMON

PVDD

PVDD1

BOOT1P

OUT1P

LX1705

TCTRL

MUTE

VREF

IN1P

N.C.

STBY

PVDD2

BOOT2P

OUT2P

PVDD

PVSS1P

IN1N

PVSS2P

IN2P IN2N

LX1705

IN2N

IN1N

IN1P

IN2P

MUTE

PACKAGE ORDER INFO

(擄C)

-40 to 85

Plastic MLPQ

32-Pin 5mm x 5mm

RoHS Compliant / Pb-free

LX1705ILQ

Note: Available in Tape & Reel. Append the letters 鈥淭R鈥?to the

part number. (i.e. LX1705ILQ-TR)

漏

2007

Rev. 1.2, 2007-03-20

Microsemi

Analog Mixed Signal Group

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

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