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參數(shù)資料
| 型號： | TMC2193KJC |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 消費家電 |
| 英文描述： | 10 Bit Encoder |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP100 |
| 封裝： | MQFP-100 |
| 文件頁數(shù)： | 66/72頁 |
| 文件大小： | 448K |
| 代理商： | TMC2193KJC |
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TMC2193
PRODUCT SPECIFICATION
66
REV. 1.0 3/26/03
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:
Keep analog traces (C
BYPx
, V
REF
, R
REF
, DACx) as
short and far from all digital signals as possible. The
TMC2193 should be located near the board edge, close
to the analog output connectors.
The power plane for the TMC2193 should be separate
from that which supplies other digital circuitry. A single
power plane should be used for all of the V
DD
pins. If
the power supply for the TMC2193 is the same for the
system's digital circuitry, power to the TMC2193 should
be filtered with ferrite beads and 0.1
μ
F capacitors to
reduce noise.
The ground plane should be solid, not cross-hatched.
Connections to the ground plane should be very short.
Decoupling capacitors should be applied liberally to
pins. For best results, use 0.1
μ
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 TMC2193 footprint, the voltage reference,
or the analog outputs. Capacitive coupling of digital
power supply noise from this layer to the TMC2193 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 TMC2193 to either
ground or V
DD
. Do not leave them unconnected.
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相關代理商/技術參數(shù) |
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