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

PA96

PA96U

1

PA96

FEATURES

•HIGHVOLTAGE-300VOLTS

•HIGHOUTPUTCURRENT–1.5AMPS

•70WATTDISSIPATIONCAPABILITY

•175MHzGAINBANDWIDTH

•250V/µ-SECONDSLEWRATE

APPLICATIONS

•PZTDRIVE

•MAGNETICDEFLECTION

•PROGRAMMABLEPOWERSUPPLIES

•70VLINEAUDIOto70W

DESCRIPTION

The PA96 is a state of the art high voltage, high current

operational amplifier designed to drive resistive, capacitive

and inductive loads. For optimum linearity, the output stage

is biased for class A/B operation. External compensation

provides user flexibility in maximizing bandwidth at any gain

setting. The safe operating area (SOA) can be observed for

all operating conditions by selection of user programmable

current limit. For continuous operation under load, a heatsink

of proper rating is required.

The hybrid integrated circuit utilizes thick film (cermet)

resistors, ceramic capacitors and semiconductor chips to

maximize reliability, minimize size and give top performance.

Ultrasonically bonded aluminum wires provide reliable inter-

connections at all operating temperatures. The 8-pin TO-3

package is hermetically sealed and electrically isolated. The

use of compressible isolation washers voids the warranty.

EQUIVALENTCIRCUITDIAGRAM

TYPICALAPPLICATION

PZT POSITION CONTROL

The MOSFET output stage of the PA96 provides superior

SOA performance compared to bipolar output stages where

secondary breakdown is a concern. The extended SOA is

ideal in applications where the load is highly reactive and

may impose simultaneously both high voltage and high cur-

rent across the output stage transistors. In the figure above

a piezo-electric transducer is driven to high currents and high

voltages by the PA96.

EXTERNALCONNECTIONS

8

7

6

5

4

3

2

1

TOP VIEW

C

L

+V

S

+IN

-IN

-V

COMP

OUT

R

CL

C

C

+275V

-15V

PA96

_

+

-

+

C

C

R

CL

R

I

R

F

3

5

4

6

8

7

1

2

+Vs

COMP

COMP

-Vs

+IN

-IN

OUT

CL

8-PINTO-3

PACKAGESTYLECE

Power Operational Amplifier

PA96

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

MAY 2009

APEX − PA96UREVE