AD9577-EVALZ(Rev0) Просмотр технического описания (PDF) - Analog Devices
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AD9577-EVALZ Datasheet PDF : 44 Pages
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Data Sheet
127Ω
VS
127Ω
VS
CD
10kΩ
VS
83Ω
83Ω
10kΩ
CD
VS
AD9577
CD 1
VS
VSCA
VS
VSI2C
REFOUT
VS
VSREFOUT
VS
VSX
22pF
22pF
REFCLK
XT2
XT1
REFSEL
VS
VSCB
CD 10
AD9577
30
VSOB1A
OUT1P
OUT1N
VSFA
SSCG
VSM
VSFB
OUT3P
OUT3N
VSOB3B
21
VS
CD
VS
127Ω
127Ω
50Ω
50Ω
VS 83Ω
83Ω
VS
VS
VS
127Ω
50Ω
127Ω
50Ω
83Ω
83Ω
VS
CD
DO NOT CONNECT OTHER TRACES
TO PIN 15, PIN 16, PIN 35, AND PIN 36.
220nF
CD
VS
VS
127Ω
127Ω
CD
CAPACITORS CD CONSIST OF
100nF IN PARALLEL WITH 10nF.
VS
83Ω
83Ω
Figure 50. Typical LVPECL Application Circuit
POWER AND GROUNDING CONSIDERATIONS AND POWER SUPPLY REJECTION
Many applications seek high speed and performance under less
Each power supply pin should have independent decoupling and
than ideal operating conditions. In these application circuits,
connections to the power supply plane. It is recommended that the
the implementation and construction of the PCB is as important
device exposed paddle be directly connected to the ground plane
as the circuit design. Proper RF techniques must be used for
by a grid of at least nine vias. Care should be taken to ensure that
device selection, placement, and routing, as well as for power
the output traces cannot couple onto the reference or crystal input
supply bypassing and grounding to ensure optimum performance.
circuitry.
Rev. 0 | Page 43 of 44
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