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

PA15FL • PA15FLA

PA15FLU

1

PA15FL, PA15FLA

TYPICAL APPLICATION

LOW POWER, PIEZOELECTRIC POSITIONING

Piezo positioning may be applied to the focusing of segment-

ed mirror systems.The composite mirror may be composed of

hundreds of elements, each requiring focusing under computer

control. In such complex systems the PA15FL reduces the

costs of power supplies and cooling with its advantages of low

cost and low quiescent power consumption while increasing

circuit density with the SIP package.

EXTERNAL CONNECTIONS

PHASE COMPENSATION

GAIN

C

C

R

C

≥ 1

33pf

1KΩ

≥ 10

OPEN

OPEN

.6

R

I

CL

FEATURES

•HIGHVOLTAGE—450V(±225V)

•LOWCOST

•LOWQUIESCENTCURRENT—3.0mAMAX

•HIGHOUTPUTCURRENT—200mA

•PROGRAMMABLECURRENTLIMIT

APPLICATIONS

•PIEZOELECTRICPOSITIONING

•HIGHVOLTAGEINSTRUMENTATION

•ELECTROSTATICTRANSDUCERS

•PROGRAMMABLEPOWERSUPPLIESUPTO440V

DESCRIPTION

The PA15FL is a high voltage, low quiescent current MOSFET

operational amplifier designed as a low cost solution for driving

continuous output currents up to 200mA and pulse currents up

to 350mA into capacitive loads.The safe operating area (SOA)

has no second breakdown limitations and can be observed for

all type loads by choosing an appropriate current limiting resistor.

The MOSFET input stage has integrated static and differential

mode protection. The MOSFET output stage is biased AB for

linear operation. External compensation provides flexibility

in choosing bandwidth and slew rate for the application. The

10-pin power SIP package is electrically isolated.

EQUIVALENTSCHEMATIC

Q1

Q2

6

1

2

5

9

8

10

7

R1 R2

C1

R3

Q3

CC1

CC2

Q6

Q5

R5

R8

R9

Q15

R11

R12

Q16

Q12

Q8

R4

R7

Q4

ILIM

OUT

Q14

R10

Q13

Q11

–IN

+IN

R6

COMPUTER

FOCUS

COMMAND

VOLTAGE

R

F

R

IN

+V

S

-V

S

1

2

5

7

6

10

PA15FL

V

OUT

PIEZO DRIVE

R

CL

1

2

3

4

5

6

7

8

9

10

–IN

+IN

NC

–V

+V

OUT

NC

S

S

10-PINSIP

PACKAGESTYLEfL

Formed leads available

See package style FU

High Voltage Power Operational Amplifiers

PA15FL • PA15FLA

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 − PA15FLUREVC