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INTRODUCTION
Fast, easy breadboarding of circuits using the PA75CX or
PA35CX are possible with the EK33 PC board. Mounting holes
are provided and the provision for standard banana jacks simpli-
fies connection and testing. Components are labeled on both
sides of the board for ease in probing. This kit is not suitable
for PA75CC, PA75CD, PA35CC or PA35CD.
A multitude of circuit configurations are possible, so only
several component locations have specific functions and will
usually be necessary:
TYPICAL COMPONENT FUNCTIONS
COMPONENT
C1, C5, C7, C9
C2, C6
R11, R5
FUNCTION
Power Supply bypasses MUST be used
for each amplifier. Usually ceramic types of
.01µF to 1.0µF and 10µF of capacitance
per ampere of output current.
Feedback resistors
The following locations should be jumpered unless used
otherwise (their most common function is listed).
J3, J9
J2, J8
J4, J6
J5, J10
Output amp a to input amp b
-Vs
Connects paralleling output a to output b
Connects feedback for amp a
PARTS LIST
Part #
Eval33
Clamp04
MS11
TW14
HS29
Description
Evaluation Board
Clamp for HS29
Pin Receptacle, 30 pin strip
Thermal Washer TO-220
10/Pack
Heat Sink, 2.7 DEG/W
Quantity
1
2
1
1
1
The following locations should be left open unless used otherwise
(their most common anticipated function is listed).
J1, J7
Connects -Vs to ground reference
The function of all other components is up to the designer's
circuit needs.
EQUIVALENT SCHEMATIC
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APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com
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APEX [ CIRRUS LOGIC ]
