PA78DK Cirrus Logic Inc, PA78DK Datasheet

PA78DK

Manufacturer Part Number

PA78DK

Description

IC PWR AMP 350V 200MA 20PSOP

Manufacturer

Cirrus Logic Inc

Series

Apex Precision Power™r

Datasheets

1.EK61.pdf (10 pages)

2.PA78DK.pdf (6 pages)

Specifications of PA78DK

Amplifier Type

Power

Number Of Circuits

Slew Rate

350 V/µs

Gain Bandwidth Product

1MHz

Current - Input Bias

8.5pA

Voltage - Input Offset

8000µV

Current - Supply

700µA

Current - Output / Channel

150mA

Voltage - Supply, Single/dual (±)

20 V ~ 350 V, ±10 V ~ 175 V

Operating Temperature

-40°C ~ 125°C

Mounting Type

Surface Mount

Package / Case

20-PSOP

Number Of Channels

Voltage Gain Db

120 dB

Common Mode Rejection Ratio (min)

90 dB

Input Offset Voltage

25 mV

Operating Supply Voltage

300 V

Maximum Operating Temperature

+ 125 C

Mounting Style

SMD/SMT

Maximum Dual Supply Voltage

+/- 175 V

Minimum Operating Temperature

- 40 C

For Use With

598-1398 - KIT EVALUATION PA78/PA79

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Output Type

-3db Bandwidth

Lead Free Status / Rohs Status

Details

Other names

598-1351

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

PA78DK

Manufacturer:

APEX

Quantity:

20 000

Company:

Meier Automation Equipment Co., Limited

Part Number:

PA78DK/AO

Manufacturer:

APEX

Quantity:

20 000

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FEATURES

♦ A Unique (Patent Pending) Technique for Very

♦ Over 350 V/µs Slew Rate

♦ Wide Supply Voltage

♦ Output Current – 150mA Cont.; 200mA Pk

♦ Up to 23 Watt Dissipation Capability

♦ Over 200 kHz Power Bandwidth

APPLICATIONS

♦ Piezoelectric Positioning and Actuation

♦ Electrostatic Deflection

♦ Deformable Mirror Actuators

♦ Chemical and Biological Stimulators

PA78U

Low Quiescent Current

♦ Single Supply: 20V To 350V

♦ Split Supplies: ± 10V To ± 175V

http://www.cirrus.com

PACKAGE STYLE DK

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

20–Pin PSOP

Power Operational Amplifier

V+

V–

CLASS AB INPUT STAGE

ACTIVE LOAD

BLOCK DIAGRAM

VOUT+

VOUT–

DESCRIPTION

The PA78 is a high voltage, high speed, low idle cur-

rent op-amp capable of delivering up to 200mA peak

output current. Due to the dynamic biasing of the input

stage, it can achieve slew rates over 350V/µs, while

only consuming less than 1mA of idle current. External

phase compensation allows great flexibility for the user

to optimize bandwidth and stability.

The output stage is protected with user selected cur-

rent limit resistor. For the selection of this current limit-

ing resistor, pay close attention to the SOA curves for

each package type. Proper heatsinking is required for

maximum reliability.

CURRENT

BUFFER

LIMIT

PACKAGE STYLE EU

LEAD FORM EW

VOUT

12–Pin SIP

APEX − PA78UREVB

PA78

JUL 2009

PA78

Related parts for PA78DK

PA78DK Summary of contents

PA78 ChARACTERISTICS AND SPECIFICATIONS ABSOLUTE MAxIMUM RATINGS Parameter SUPPLY VOLTAGE − OUTPUT CURRENT, peak (200ms), within SOA POWER DISSIPATION, internal, DC POWER DISSIPATION, internal, DC INPUT VOLTAGE, differential INPUT VOLTAGE, common mode TEMPERATURE, pin solder, 10s ...

Page 3

... DK Package 1 -IN – +IN C – PA78DK C 20 PIN PSOP 10 11 PA78U Test Conditions Full temperature range Full temperature range Full temperature range Full temperature range Full temperature range = 25°C, DC input specifications are ± value given, power supply voltage C ExTERNAL CONNECTIONS EU Package ...

Page 4

... GAIN = -100 200 150 100 50 NO COMPENSATION 0 1 100 1000 10 FREQUENCY, (KHz) POWER SUPPLY REJECTION 100 - 100 1K 10K FREQUENCY, (Hz) PA78DK SOA 1 PULSE CURVES @ 10% DUTY CYCLE MAX 0.1 0.01 10 SUPPLY TO OUTPUT DIFFERENTIAL +335V 1.6K 0-5V DAC CURRENT LIMIT 160 140 120 100 –V S ...

Page 5

SMALL SIGNAL OPEN LOOP GAIN 100 R = OPEN 0pF 3.3K, C ...

Page 6

PA78 SR+/SR- (25% - 75%) 1000 SR- 800 600 400 200 PEAK-TO-PEAK INPUT VOLTAGE SR+/SR- (25% -75%) 1000 SR+ 800 600 400 200 PEAK-TO-PEAK INPUT VOLTAGE SR+/SR- (25% ...

Page 7

PULSE RESPONSE vs. CAP LOAD 140 120 100 - ...

Page 8

PA78 GENERAL Please read Application note 1 “General operating considerations” which covers stability, power sup- plies, heat sinking, mounting, current limit, SOA inter- pretation, and specification interpretation. Visit www. cirrus.com for design tools that help automate tasks such as calculations ...

Page 9

standby. An increase in the idle current in the output stage of the amplifier will improve phase margin for ...

Page 10

... LC interactions and oscillations. The PA78DK package has a large exposed integrated copper heatslug to which the monolithic amplifier is directly attached. The solder connection of the heat slug square inch foil area on the printed circuit board will result in improved thermal performance of 25º ...

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