Microsemi

Linfinity Microelectronics Division

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

Page 5

Copyright

© 2000

Rev. 1.1, 2000-12-01

The LXE1710 Evaluation Board is a fully functional,

Class-D Amplifier.

Connection to a single supply

voltage (VDD from either a battery or power supply),

speakers, and your audio source is all that is required

to begin evaluating the amplifier and listening to music.

The following outlines the necessary connections and

control jumpers.

1) Verify contents of Evaluation Kit: The easy-to-

use amplifier is all contained on a single board.

Visually inspect to see if the board or any

components were damaged during shipping.

All components are located on the top side of

the PCB except for the decoupling capacitor,

C17.

A copy of the LX1710/1711 Datasheet

should also be enclosed or a PDF version can

be

downloaded

from

the

Microsemi.com

website

(http://www.microsemi.com/datasheets/MSC1580.PDF).

2) Power and Ground Connections: The voltage

supply and ground connections are made

through terminal block TB1. Connect your “+”

(+7V to +15V) power supply or battery to the

+V input of TB1.

Connect your supply or

battery ground to the GND input of TB1.

Please ensure the correct positive and ground

connections are made before turning on the

power supply.

3) Speaker Connection: The amplifier is designed

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“+” and “-“ to the +OUT and –OUT input of

terminal block TB2 respectively. The amplifier

can be used to drive other speaker loads but

frequency response may not be optimal. See

LC filter design section for recommended

inductor and capacitor modifications.

4) Audio Input Connection: Connect your audio

source to the RCA Jack CN1, Audio In.

For

other type interfaces, the audio input signal can

also be connected to the amplifier board using

the J3 (In- and In+) location. Strip Line Plugs

can be inserted into J3 for connectivity.

5) Jumper Selection Controls: The “on/off” or

enable to the module is controlled with the

SLEEP/ signal.

Jumper J1 connects the

SLEEP/ to “on” or “ off”. SLEEP/ is an active

Low control.

Jumper J2 connects the MUTE

control which enables/disables the audio input

to the amplifier. MUTE is an active High signal.

See table below.

6) Power Source: If a power supply is being used,

make sure it is set to the correct voltage level

and turn the power supply on.

7) Audio Source: Make sure the audio source

signal is set to a minimum level. Start or “play”

audio source and adjust source volume to

desired level.

8) Listen to AudioMAX: If the amplifier is not

operating properly, verify preceding steps or

contact Linfinity for technical assistance (714)

898-8121.

Jumper

toward

OFF

Jumper

toward

ON

Jumper

floating

J1 Jumper:

SLEEP/

Amplifier

enabled

(SLEEP/ is

OFF)

Amplifier

disabled

(SLEEP/ is

ON)

Amplifier

disabled

(SLEEP/ is

ON)

J2 Jumper:

MUTE

Audio Input

enabled

(MUTE is

OFF)

Audio Input

disabled

(MUTE is ON)

Audio Input

enabled

(MUTE is

OFF)

  Jumper Settings

To Power Supply +V

7V-15V for LX1710

7V-25V for LX1711

To Speaker +

To Speaker -

To Power Supply

Ground

Optional

Audio In -

Optional

Audio In +

To Audio

Source