EK61 Cirrus Logic Inc, EK61 Datasheet

KIT EVALUATION PA78/PA79

EK61

Manufacturer Part Number
EK61
Description
KIT EVALUATION PA78/PA79
Manufacturer
Cirrus Logic Inc
Series
Apex Precision Power™r
Datasheets

Specifications of EK61

Channels Per Ic
1 - Single, 2 - Dual
Amplifier Type
Power
Output Type
Single-Ended
Board Type
Bare (Unpopulated)
Utilized Ic / Part
PA78DK, PA79DK
Product
Amplifier Modules
Description/function
Audio Amplifiers
For Use With/related Products
PA78DK, PA79DK
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Operating Temperature
-
Current - Output / Channel
-
Voltage - Supply, Single/dual (±)
-
-3db Bandwidth
-
Slew Rate
-
Current - Supply (main Ic)
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
Other names
598-1398
EK61
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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EK61 Summary of contents

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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

Parameter ThERMAL RESISTANCE, DC, junction to case, Dual (Note 8) RESISTANCE, DC, junction to case, Single Full temperature range ...

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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 - ...

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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

PA79 LAYOUT CONSIDERATIONS The PA79 is built on a dielectrically isolated process and the package tab is therefore not electrically connected to the amplifier. For high speed operation, the package tab should be connected to a stable reference to reduce ...

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