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

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FEATURES

• RoHS COMPLIANT

• MONOLITHIC MOS TECHNOLOGY

• LOW COST

• HIGH VOLTAGE OPERATION—350V

• LOW QUIESCENT CURRENT TYP.—2.2mA

• NO SECOND BREAKDOWN

• HIGH OUTPUT CURRENT—120mA PEAK

• AVAILABLE IN DIE FORM—CPA241

APPLICATIONS

• PIEZO ELECTRIC POSITIONING

• ELECTROSTATIC TRANSDUCER & DEFLECTION

• DEFORMABLE MIRROR FOCUSING

• BIOCHEMISTRY STIMULATORS

• COMPUTER TO VACUUM TUBE INTERFACE

DESCRIPTION

The PA241 is a high voltage monolithic MOSFET operational

amplifier which achieves performance features previously

found only in hybrid designs while increasing reliability. Inputs

are protected from excessive common mode and differential

mode voltages. The safe operating area (SOA) has no second

breakdown limitation and can be observed with all type loads

by choosing an appropriate current limiting resistor. External

compensation provides the user flexibility in choosing optimum

gain and bandwidth for the application.

The PA241CE is packaged in a hermetically sealed 8-pin

TO-3 package. The metal case of the PA241CE is isolated in

excess of full supply voltage.

The PA241DF is packaged in a 24 pin PSOP (JEDEC MO-

166) package. The metal heat slug of the PA241DF is isolated

in excess of full supply voltage.

The PA241DW is packaged in Apex’s hermetic ceramic SIP

package. The alumina ceramic isolates the die in excess of

full supply voltage.

EQUIVALENT SCHEMATIC

LOW COST 660V p-p

PIEZO DRIVE

Two PA241 amplifiers operated as a bridge driver for a piezo

transducer provides a low cost 660 volt total drive capability.

The R

high frequencies. If R

compensated identically and will have matching bandwidths.

EXTERNAL CONNECTIONS

1

4

5

6

7

3

2

8

9 10

+IN

-IN

PA241DW

TOP VIEW

1

2

3

4

5

6

7

8

OUT

–IN

+IN

NOTE: PA241CE Recommended mounting torque is 4-7

in•lbs (.45 -.79 N•m)

CAUTION: The use of compressible, thermally conductive

insulators may void warranty.

PA241CE

8-PIN TO-3

24-PIN PSOP

10-PIN SIP

PACKAGE STYLE CE

PACKAGE STYLE DF

PACKAGE STYLE DW

OUT

-IN

+IN

TYPICAL APPLICATION

Ref: APPLICATION NOTE 20: "Bridge Mode Operation of Power Amplifiers"

C

C

R

CL

NC

NC

NC

NC

-IN

NC

+IN

NC

NC

NC

NC

-VS

NC

NC

NC

OUT

NC

COMP

NC

COMP

NC

ILIM

NC

+VS

24

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PA241DF

For CC values, see graph on page 4.

Note: CC must be rated for full supply

voltage.