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INTRODUCTION
This easy-to-use kit provides a platform for the evaluation of
PWM amplifiers using the SA03 pin-out configuration. It can be
used to analyze a multitude of standard or proprietary circuit
configurations, and is flexible enough to do most standard
amplifier test configurations. The board is designed for surface
mounting all components except the switching amplifier.
The schematic is shown in Figure 2. Note that all of the
components shown on the schematic will probably not be used
for any single circuit. Some components will simply be omitted,
while others require installation of a jumper to complete the
signal path.
Only components unique to the EK03 are provided in this kit.
Hardware similar to that shown in figure 1 must be obtained
locally.
ASSEMBLY
1. From the non-silk screen side, insert and solder cage jacks.
Be sure each one is fully seated.
2. From the non-silk screen side, push spacer grommets into
PC board until fully seated. Grommets will snug when screws
are inserted for heatsink mounting.
3. Apply TW05 thermal washer to the bottom of the amplifier.
4. Use #14 sleeving to insulate and align at least 2 opposite
pins of the amplifier.
5. Mount amplifier to heatsink using #6 screws and nuts. Torque
the part to the specified 8 to 10 in-lbs (.9 to 1.13 N*M). Do
not over torque.
6. Install components as needed. External connections may be
soldered directly or standard banana jacks may be soldered
to these pads.
7. Insert amplifier pins into cage jacks and fasten board to
heatsink.
PARTS LIST
Part #
HS18
MS04
EVAL09
60SPG00001
TW05
OX7R105KWN
Description
Quantity
Heatsink
1
PC mount Cage Jacks
1 Bag/12 each
PC Board
1
Spacer Grommets
4
Thermal Washer
1 Box/10 each
1µF Cap 1825B105K201N,
6
Novacap
BEFORE YOU GET STARTED
*
*
*
*
*
*
All Apex amplifiers should be handled using proper ESD precautions.
Always use the heatsink included in this kit with TW05 washer.
Always use adequate power supply bypassing.
Do not change connections while the circuit is powered.
Initially set all power supplies to the minimum operating levels allowed in the device data sheet.
Check for oscillations.
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FIGURE 1.
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