EK17 Просмотр технического описания (PDF) - Apex Microtechnology
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EK17 Datasheet PDF : 4 Pages
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EVALUATION KIT
FOR SA12 PWM AMPLIFIER
EK17
FIGURE 3. PCB SCHEMATIC.
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A block diagram of the SA12 is shown in Figure 3 along
with pcb connections of all the commonly used external
components. Your application circuit will not use all of
the components. Add those components required by
your circuit. You may have to jumper some components
to make the desired electrical connections. J1 is an
optional way to connect the clock circuit. Power supply
bypassing is particularly important and that is why high
quality ceramic chip capacitors are supplied with the kit.
In addition, a large electrolytic capacitor is included. This
capacitor was selected expressly for this evaluation kit
and may not be (and likely won't be) suitable for your end
application. You will need to select an electrolytic capacitor
based on your analysis of the capacitor's ripple current,
ripple current tolerance, operating temperature, operating
voltage, acceptable service life and acceptable supply
ripple. Note that the signal ground and power ground are
separated and tie together only at the ground pin (5). A
breadboarding area is supplied which can accomodate
1 or 2 IC amplifiers and associated components. The
large terminal pads can be used to solder wire connec-
tions or bannana jacks.
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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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