SA09 Datasheet, PDF (1/7 Pages) Cirrus Logic – Pulse Width Modulation Amplifiers

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SAS0A099
Pulse Width Modulation Amplifiers
FEATURES
♦ 500kHz SWITCHING
♦ FULL BRIDGE OUTPUT 5-40V (80V P-P)
♦ 5A OUTPUT
♦ 1 IN² FOOTPRINT
♦ FAULT PROTECTION
♦ SHUTDOWN CONTROL
♦ SYNCHRONIZABLE CLOCK
♦ HERMETIC PACKAGE
APPLICATIONS
♦ HIGH FIDELITY AUDIO AMPLIFIER
♦ BRUSH TYPE MOTOR CONTROL
♦ VIBRATION CANCELLING AMPLIFIER
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.

BLOCK DIAGRAM
AND TYPICAL APPLICATION CONNECTIONS HIGH FIDELITY AUDIO
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SA09U
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
JAN 2009
APEX − SA09REVA