TMC2192KHC Fairchild Semiconductor, TMC2192KHC Datasheet - Page 64

• Manufacturer Part Number: TMC2192KHC
• Description: Video ICs
• Manufacturer: Fairchild Semiconductor
• Type: Encoderr

Specifications of TMC2192KHC

• Operating Supply Voltage: - 0.5 V to + 7 V
• Supply Current: 375 mA
• Maximum Operating Temperature: 70 C
• Package / Case: MQFP-100
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TMC2192
Layout Considerations
Designing with high-performance mixed-signal circuits
demands printed circuits with ground planes. Wire-wrap is
not an option. Overall system performance is strongly influ-
enced by the board layout. Capacitive coupling from digital
to analog circuits may result in poor picture quality. Con-
sider the following suggestions when doing the layout:
•
•
•
64
Keep analog traces (C
short and far from all digital signals as possible. The
TMC2192 should be located near the board edge, close
to the analog output connectors.
The power plane for the TMC2192 should be separate
from that which supplies other digital circuitry. A single
power plane should be used for all of the V
the power supply for the TMC2192 is the same for the
system's digital circuitry, power to the TMC2192 should
be filtered with ferrite beads and 0.1 F capacitors to
reduce noise.
The ground plane should be solid, not cross-hatched.
Connections to the ground plane should be very short.
BYPx
, V
REF
, R
REF
, DACx) as
DD
pins. If
•
•
•
•
Decoupling capacitors should be applied liberally to
pins. For best results, use 0.1 F capacitors. Lead lengths
should be minimized. Ceramic chip capacitors are the
best choice.
If there is dedicated digital power plane, it should not
overlap the TMC2192 footprint, the voltage reference,
or the analog outputs. Capacitive coupling of digital
power supply noise from this layer to the TMC2192 and
its related analog circuitry can have an adverse effect on
performance.
The PXCK should be handled carefully. Jitter and noise
on this clock or its ground reference will translate to
noise on the video outputs. Terminate the clock line
carefully to eliminate overshoot and ringing.
Connect all unused inputs to the TMC2192 to either
ground or V
DD
. Do not leave them unconnected.
PRODUCT SPECIFICATION
REV. 1.0.0 8/13/03