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

PB58 • PB58A

PB58U

1

PB58, PB58A

FEATURES

•WIDESUPPLYRANGE—±15Vto±150V

•HIGHOUTPUTCURRENT—

1.5AContinuous(PB58)

2.0AContinuous(PB58A)

•VOLTAGEANDCURRENTGAIN

•HIGHSLEW—50V/µsMinimum(PB58)

75V/µsMinimum(PB58A)

•PROGRAMMABLEOUTPUTCURRENTLIMIT

•HIGHPOWERBANDWIDTH—320kHzMinimum

•LOWQUIESCENTCURRENT—12mATypical

•EVALUATIONKIT—SeeEK50

APPLICATIONS

•HIGHVOLTAGEINSTRUMENTATION

•ElectrostaticTRANSDUCERS&DEFLECTION

•ProgrammablePowerSuppliesUpto280Vp-p

DESCRIPTION

The PB58 is a high voltage, high current amplifier designed

to provide voltage and current gain for a small signal, general

purpose op amp. Including the power booster within the feed-

back loop of the driver amplifier results in a composite amplifier

with the accuracy of the driver and the extended output voltage

range and current capability of the booster.The PB58 can also

be used without a driver in some applications, requiring only

an external current limit resistor to function properly.

The output stage utilizes complementary MOSFETs, pro-

viding symmetrical output impedance and eliminating second

breakdown limitations imposed by Bipolar Transistors. Internal

feedback and gainset resistors are provided for a pin-strapable

gain of 3.Additional gain can be achieved with a single external

resistor. Compensation is not required for most driver/gain

configurations, but can be accomplished with a single external

capacitor. Enormous flexibility is provided through the choice

of driver amplifier, current limit, supply voltage, voltage gain,

and compensation.

This hybrid circuit utilizes a beryllia (BeO) substrate, thick

film 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 electrically isolated and hermetically sealed using

one-shot resistance welding.The use of compressible isolation

washers voids the warranty.

TYPICALAPPLICATION

Figure 1. Inverting

composite amplifier.

EQUIVALENTSCHEMATIC

EXTERNALCONNECTIONS

3

1

2

6

8

5

4

7

IN

GAIN

COM

COMP

Q1

Q4

Q2

Q3

Q5

Q6

Q7

Q8

Q10

Q9

+Vs

OUT

CL

–Vs

Q11

6.2K

50K

3.1K

1

2

3

4

5

6

7

8

TOP VIEW

CL

+V

S

IN

COM

–V

S

GAIN

R

G

COMP

C

C

OUT

R

CL

OP

AMP

PB58

C

F

R

F

V

IN

R

I

+15V

–15V

IN

COM

+Vs

–Vs

R

CL

OUT

C

C

R

G

R

L

8-PINTO-3

PACKAGESTYLECE

Power Booster Amplifier

PB58 • PB58A

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 − PB58UREVK