r o d u c t
I
I
n n
PA241DW
nn
EK42
P
PA15FL,
o
o
v
v
a
a t i
o n F
F
r
r
o
o
m
m
EK42
EK42
EQUIVALENT SCHEMATIC
C1
C2
– IN
GND
C3
C5
R2
R3
R7
C10
+IN
C7
C11
R11
C6
R4
1
R8 2
6
5
8
10
9
CR1
Evaluation Kit for PA15 and PA241DW Pin-Outs
INTRODUCTION
Fast, easy breadboarding of circuits using the PA241DW
and the PA15 are possible with the EK42 PC board. Mounting
holes are provided and the provision for standard banana jacks
simplifies connection and testing. The amplifier may be mounted
horizontally or vertically. Components are labeled on both sides
of the board for ease in probing.
A multitude of circuit configurations are possible, so only
several component locations have specific functions and will
usually always be necessary:
C5,C7 Power supply bypasses MUST be used. Usually
ceramic types of 0.01 to 0.1µF.
R1
Feedback resistor.
R2
Input resistor.
R9, C11 Compensation (see amplifier data sheet).
R5
Current limit (see amplifier data sheet).
R7
Most often used as input bias current return for +input
in non-inverting circuits.
R3, C6 Noise gain compensation. Necessary only occasion-
ally, see Application Notes 19 and 25.
The following locations should be jumpered unless used (their
most common anticipated function is listed).
R4, R8
R11
R6
Input protection.
General purpose.
Output current sense.
2.5"
63.5mm
R1
+V
7
R5
R6
Out
R9 R10
C12
CR2
GND
–V
CAUTION
High voltages will be present.
Use caution in handling and
probing when power is applied.
The function of any other components is up to the designer’s
needs and imagination.
1
+ C5
R4
C2
–IN R2
C3
R3
R8
C6
R7
GND
+IN
R11
C10
C7 +
CR1
CR2
R6
C12
C1
R1
OUT
R10
R5
GND
+V
GND
+V
3.5"
88.9mm
1
R9
R9
C5 +
R4
C2
C11
–V
–V
C11
CR1
CR2
R6
OUT
R10
R5
C12
C1
R1
R7
R11
C10
GND
+IN
R3
R8
C6
+ C7
R2
C3
–IN
EK42–2 REV A
COMP. SIDE
EK42
REV A
NOTE: Illustration only, not to exact scale.
EK42U
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
MAY 2009
1
APEX − EK42UREVD
EK42
P r o d u c t I n n o v a t i o nF r o m
ContACting CiRRUs LogiC sUPPoRt
For all Apex Precision Power product questions and inquiries, call toll free 800-546-2739 in North America.
For inquiries via email, please contact apex.support@cirrus.com.
International customers can also request support by contacting their local Cirrus Logic Sales Representative.
To find the one nearest to you, go to www.cirrus.com
IMPORTANT NOTICE
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to change without notice and is provided "AS IS" without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant
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All other brand and product names in this document may be trademarks or service marks of their respective owners.
2
EK42U
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