SA07U Apex Microtechnology Corporation, SA07U Datasheet

SA07U

Manufacturer Part Number

SA07U

Description

PWM Amplifier

Manufacturer

Apex Microtechnology Corporation

Datasheet

1.SA07U.pdf (5 pages)

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FEATURES

• 500kHz SWITCHING

• FULL BRIDGE OUTPUT 5-40V (80V P-P)

• 5A OUTPUT

• 1 IN

• FAULT PROTECTION

• SHUTDOWN CONTROL

• SYNCHRONIZABLE CLOCK

• HERMETIC PACKAGE

APPLICATIONS

• HIGH FIDELITY AUDIO AMPLIFIER

• BRUSH TYPE MOTOR CONTROL

• VIBRATION CANCELLING AMPLIFIER

DESCRIPTION

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 gener-

ated clock. An integrator amplifier is provided. Direct access

to the pwm input is provided for connection to digital motion

control circuits. Protection circuits guard against thermal over-

loads 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

M I C R O T E C H N O L O G Y

APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com

The SA07 amplifier is a 40 volt, 500kHz PWM amplifier. The

FOOTPRINT

SIGNAL

+PWM

RAMP/–PWM

CLK OUT

CLK IN

GND

INT OUT

INT +

INT –

H T T P : / / W W W . A P E X M I C R O T E C H . C O M

OSC

100pF

THERMAL,

PROTECT.

CIRCUIT

18K

SHORT

CLK/2

PULSE WIDTH MODULATION AMPLIFIER

SA07

INT OUT*

RAMP/–PWM

EXTERNAL CONNECTIONS

Case tied to Pin 7. Allow no current in case. Bypassing of supplies is

required. Package is Apex DIP6. See Outline Dimensions/Packages. If

+PWM > RAMP then A OUT > B OUT.

* See text.

SA07

+PWM

5V OUT

–INT

+INT

GND

( 8 0 0 ) 5 4 6 - A P E X

REG.

ILIM/SHDN

I SENSE A

I SENSE B

5V OUT

B OUT

A OUT

Vcc

FILTER

( 8 0 0 ) 5 4 6 - 2 7 3 9

LOAD

SHDN

LIMIT

Ilim/SHDN

Isense B

B OUT

+Vs

A OUT

Isense A

Vcc

CLK OUT*

CLK IN

Rlimit*

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