P r o d u c t I n n o v a t i o n F r o m

SA09

SA09U



FEATURES

♦500kHzSWITCHING

♦FULLBRIDGEOUTPUT5-40V(80VP-P)

♦5AOUTPUT

♦FAULTPROTECTION

♦SHUTDOWNCONTROL

♦SYNCHRONIZABLECLOCK

♦HERMETICPACKAGE

APPLICATIONS

♦HIGHFIDELITYAUDIOAMPLIFIER

♦BRUSHTYPEMOTORCONTROL

♦VIBRATIONCANCELLINGAMPLIFIER

Pulse Width Modulation Amplifiers

SA09

P r o d u c t I n n o v a t i o n F r o m

Copyright © Cirrus Logic, Inc. 2009

(All Rights Reserved)

http://www.cirrus.com

JAN2009

APEX − SA09REVA

DESCRIPTION

The SA09 amplifier is a 40 volt, 500kHz PWM ampli-

fier. The full bridge output circuit provides 5 amps of

continuous drive current for applications as diverse as

high fidelity audio and brush type motors. Clock output

and input pins can be used for synchronization with

other amplifiers or an externally generated clock. Direct

access to the pwm input is provided for connection to

digital motion control circuits. Protection circuits guard

against thermal overloads as well as shorts to supply

or ground. The current limit is programmable with one

or two external resistors depending on the application.

A shutdown input disables all output bridge drivers.

The 18 pin steel package is hermetically sealed.

BLOCKDIAGRAM

ANDTYPICALAPPLICATIONCONNECTIONSHIGHFIDELITYAUDIO