PA79DK APEX PRECISION POWER, PA79DK Datasheet

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PA79DK

Manufacturer Part Number
PA79DK
Description
IC, OP-AMP, 200KHZ, 350V/µs, SOP-20
Manufacturer
APEX PRECISION POWER
Datasheet

Specifications of PA79DK

Op Amp Type
High Slew Rate
No. Of Amplifiers
1
Bandwidth
200kHz
Slew Rate
350V/µs
Supply Voltage Range
± 10V To ± 175V
Amplifier Case Style
SOP
No. Of Pins
20
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PA79DK
Manufacturer:
ADI
Quantity:
39
Part Number:
PA79DK
Manufacturer:
APEX
Quantity:
20 000
FEATURES
♦ A Unique (Patent Pending) Technique for Very
♦ Over 350 V/µs Slew Rate
♦ Wide Supply Voltage
♦ Output Current – Per Amplifier –
♦ Up to 26 Watt Dissipation Capability (Dual)
♦ Over 200 kHz Power Bandwidth
APPLICATIONS
♦ Piezoelectric Positioning and Actuation
♦ Electrostatic Deflection
♦ Deformable Mirror Actuators
♦ Chemical and Biological Stimulators
PA79U
Low Quiescent Current
♦ Single Supply: 20V To 350V
♦ Split Supplies: ± 10V To ± 175V
150mA Cont.; 200mA Pk
http://www.cirrus.com
P r o d u c t I n n o v a t i o n F r o m
P r o d u c t I n n o v a t i o n F r o m
Power Operational Amplifier
V+
V–
CLASS AB INPUT STAGE
ACTIVE LOAD
ACTIVE LOAD
BLOCK DIAGRAM
PACKAGE STYLE DK
Copyright © Cirrus Logic, Inc. 2009
20–Pin PSOP
(All Rights Reserved)
VOUT+
VOUT–
DESCRIPTION
The PA79 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
VOUT
APEX − PA79UREVB
PA79
JJUL 2009
PA79
1

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PA79DK Summary of contents

Page 1

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PA79 ChARACTERISTICS AND SPECIFICATIONS ABSOLUTE MAxIMUM RATINGS Parameter SUPPLY VOLTAGE − OUTPUT CURRENT, peak (200ms), within SOA POWER DISSIPATION, internal, DC Single POWER DISSIPATION, internal, DC Dual INPUT VOLTAGE, differential INPUT VOLTAGE, common mode TEMPERATURE, junction ...

Page 3

... Rating applies when the heatslug of the DK package is soldered to a minimum of 1 square inch foil area of a printed circuit board. 7. Rating applies with the JEDEC conditions outlined in the Heatsinksing section of this datasheet. 8. Rating applies when power dissipation is equal in two amplifiers. ExTERNAL CONNECTIONS 1 -IN (A) – + (A) PA79DK (A) 20 PIN PSOP C -V (B) S -IN (B) – +IN ( (B) R ...

Page 4

PA79 TYPICAL PERFORMANCE GRAPhS POWER RESPONSE 350 GAIN = -50 300 250 GAIN = -100 200 150 100 50 NO COMPENSATION 0 1 100 1000 10 FREQUENCY, (KHz) POWER SUPPLY REJECTION 100 - ...

Page 5

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

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PA79 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% ...

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

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PA79 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

... Conditions: Power dissipation = 2 watts Ambient Temperature = 55ºC MOISTURE SENSITIVITY The PA79DK has been qualified according to JEDEC 22-A-113-D, MSL 3. The following conditions were used: IR reflow for Pb-free assembly profile where: package thickness is greater than 2.5mm, package volume is greater than 350mm , TP = 245°C. ...

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