PA88A Cirrus Logic Inc, PA88A Datasheet

PA88A

Manufacturer Part Number

PA88A

Description

OP AMP HV 450V .100A 8P TO-3 SG

Manufacturer

Cirrus Logic Inc

Series

Apex Precision Power™r

Datasheets

1.PA88.pdf (5 pages)

2.PA88.pdf (3 pages)

Specifications of PA88A

Amplifier Type

Power

Number Of Circuits

Slew Rate

30 V/µs

Gain Bandwidth Product

2.1MHz

Current - Input Bias

3pA

Voltage - Input Offset

250µV

Current - Supply

1.7mA

Current - Output / Channel

100mA

Voltage - Supply, Single/dual (±)

30 V ~ 450 V, ±15 V ~ 225 V

Operating Temperature

-25°C ~ 85°C

Mounting Type

Through Hole

Package / Case

TO-3-8

Number Of Channels

Voltage Gain Db

111 dB

Common Mode Rejection Ratio (min)

90 dB

Input Offset Voltage

0.5 mV

Maximum Operating Temperature

+ 85 C

Mounting Style

Through Hole

Maximum Dual Supply Voltage

+/- 225 V

Minimum Operating Temperature

- 25 C

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Output Type

-3db Bandwidth

Lead Free Status / Rohs Status

Details

Other names

598-1447
PA88A

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Manufacturer

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Price

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– IN

FEATURES

• HIGH VOLTAGE — 450V (±225V)

• LOW QUIESCENT CURRENT — 2mA

• HIGH OUTPUT CURRENT — 100mA

• PROGRAMMABLE CURRENT LIMIT

• LOW BIAS CURRENT — FET Input

APPLICATIONS

• PIEZOELECTRIC POSITIONING

• HIGH VOLTAGE INSTRUMENTATION

• ELECTROSTATIC TRANSDUCERS

• PROGRAMMABLE POWER SUPPLIES UP TO 440V

DESCRIPTION

operational amplifier designed for output currents up to 100mA.

Output voltages can swing up to ±215V with a dual supply

and up to +440 volts with a single supply. The safe operating

area (SOA) has no second breakdown limitations and can be

observed with all types of loads by choosing an appropriate cur-

rent limiting resistor. High accuracy is achieved with a cascode

input circuit configuration. All internal biasing is referenced to a

bootstrapped zener-MOSFET current source. As a result, the

PA88 features an unprecedented supply range and excellent

supply rejection. The MOSFET output stage is biased on for

linear operation. External compensation provides user flexibility.

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 hermetically sealed and electrically isolated. The

use of compressible thermal isolation washers and/or improper

mounting torque will void the product warranty. Please see

“General Operating Considerations” .

EQUIVALENT SCHEMATIC

PA88U

The PA88 is a high voltage, low quiescent current MOSFET

This hybrid circuit utilizes beryllia (BeO) substrates, thick

Q10A

http://www.cirrus.com

Q13

High Voltage Power Operational Amplifiers

Q10B

PA88, PA88A

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

+ IN

D19

COMP

Q16

Q11

Q17

Q12

Q18

OUT

–V

TYPICAL APPLICATION

segmented mirror systems. The composite mirror may be

composed of hundreds of elements, each requiring focusing

under computer control. In such complex systems the PA88’s

advantage of low quiescent power consumption reduces

the costs of power supplies and cooling, while providing the

interface between the computer and the high voltage drive to

the piezo positioners.

EXTERNAL CONNECTIONS

+IN

–IN

COMPUTER

Piezo positioning may be applied to the focusing of

COMMAND

VOLTAGE

FOCUS

LOW POWER, PIEZOELECTRIC POSITIONING

+Vs

–Vs

TOP VIEW

COMP

PATENTED

PA88 • PA88A

–V

PA88

OUT

COMP

PHASE COMPENSATION

GAIN

APEX − PA88UREVN

100

PA88 • PA88A

SUPPLY VOLTAGE

PACKAGE STYLE CE

RATED FOR FULL

3.3pf

68pf

33pf

15pf

= .7

PIEZO DRIVE

8-PIN TO-3

LIM

MAY 2009

100

OUT

—

Related parts for PA88A

PA88A Summary of contents

Page 1

... EXTERNAL CONNECTIONS + + COMP –IN 2 Q12 –Vs Q11 1 OUT Q17 Q18 Q16 – Copyright © Cirrus Logic, Inc. 2009 (All Rights Reserved) PA88 • PA88A PA88 • PA88A PATENTED 8-PIN TO-3 PACKAGE STYLE PIEZO DRIVE PA88 – PHASE COMPENSATION GAIN C 1 68pf 1 OUT 10 33pf ...

Page 2

... RESISTANCE, DC, junction to case RESISTANCE, junction to air TEMPERATURE RANGE, case NOTES: * The specification of PA88A is identical to the specification for PA88 in applicable column to the left. 1. Unless otherwise noted supply voltage is typical rating. 2. Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power dissipation to achieve high MTTF. 3. Doubles for every 10° ...

Page 3

... FREQUENCY, F (Hz) POWER SUPPLY REJECTION 140 120 100 100 1K 10K .1M 1M FREQUENCY, F (Hz) PA88 • PA88A QUIESCENT CURRENT 2.5 2.25 2.0 1.75 1.5 1.25 1.0 0 100 200 300 450 TOTAL SUPPLY VOLTAGE, V (V) S POWER RESPONSE 500 250 125 100 ...

Page 4

... PA88 • PA88A GENERAL Please read Application Note 1 "General Operating Con- siderations" which covers stability, supplies, heat sinking, mounting, current limit, SOA interpretation, and specification interpretation. Visit www.Cirrus.com for design tools that help automate tasks such as calculations for stability, internal power dissipation, current limit ...

Page 5

... Cirrus Logic, Cirrus, and the Cirrus Logic logo designs, Apex Precision Power, Apex and the Apex Precision Power logo designs are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trademarks or service marks of their respective owners. PA88U PA88 • PA88A 5 ...

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