PA78 Datasheet, PDF (1/10 Pages) Cirrus Logic – POWER OPERATIONAL AMPLIFIER

P r o d u c t IInnnnoovvaa t i o n FFrroomm
PAP7A788
Power Operational Amplifier
FEATURES
♦ A Unique (Patent Pending) Technique for Very
Low Quiescent Current
♦ Over 350 V/µs Slew Rate
♦ Wide Supply Voltage
♦ Single Supply: 20V To 350V
♦ Split Supplies: ± 10V To ± 175V
♦ 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
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.
BLOCK DIAGRAM
VOUT+
ACTIVE LOAD
V+
CLASS AB INPUT STAGE
V–
BUFFER
VOUT–
ACTIVE LOAD
CURRENT
LIMIT
VOUT
20–Pin PSOP
PACKAGE STYLE DK
12–Pin SIP
PACKAGE STYLE EU
LEAD FORM EW
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Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
JUL 2009₁
APEX − PA78UREVB