TMC1103 Ver la hoja de datos (PDF) - Cadeka Microcircuits LLC.
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TMC1103 Datasheet PDF : 16 Pages
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PRODUCT SPECIFICATION
TMC1103
2. Segregate traces:
• A/D analog
• D/A analog
• Clocks
• Digital
Treat analog inputs as transmission lines. Cleanly route
traces over the ground plane bearing in mind that the
return currents will flow through the ground plane
beneath the traces. Do not route digital traces nearby.
A few inches of digital trace less than a few line widths
from an analog trace will cross-couple noise into
adjacent analog circuits.
3. The power plane for the TMC1103 should be separate
from that which supplies the rest of the digital circuitry.
A single power plane should be used for all of the VDD
pins. If the power supply for the TMC1103 is the same
as that of the system's digital circuitry, power to the
TMC1103 should be decoupled with ferrite beads and
0.1mF capacitors to reduce noise.
4. The ground plane should be solid, not cross-hatched.
Connections to the ground plane should have very short
leads.
5. Decoupling capacitors should be applied liberally to
VDD pins. Remember that not all power supply pins
are created equal. They supply different circuits on the
integrated circuit, each of which generate varying
amounts and types of noise. For best results, use 0.1mF
ceramic capacitors. Lead lengths should be minimized.
6. CLKX should be handled carefully. Jitter and noise on
this clock may degrade performance. Terminate the
clock line, if needed, to eliminate overshoot and ringing.
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