參數(shù)資料
型號： ADV7341
廠商： Analog Devices, Inc.
英文描述： Multiformat Video Encoder, Six 12-Bit Noise Shaped Video㈢ DACS
中文描述： 多格式視頻編碼器，6個12位噪聲整形視頻㈢交叉連接系統(tǒng)
文件頁數(shù)： 67/88頁
文件大?。?/td> 1066K
代理商： ADV7341
ADV7340/ADV7341
Rev. 0 | Page 67 of 88
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–80
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–10
0
–30
–60
–90
–120
–150
–180
–210
–240
1M
10M
100M
FREQUENCY (Hz)
CIRCUIT FREQUENCY RESPONSE
1G
GROUP DELAY (Seconds)
PHASE (Degrees)
MAGNITUDE (dB)
21n
18n
15n
12n
9n
6n
3n
0
24n
G
0
Figure 87. Output Filter Plot for SD, 16× Oversampling
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
1M
10M
100M
1G
FREQUENCY (Hz)
CIRCUIT FREQUENCY RESPONSE
MAGNITUDE (dB)
GROUP DELAY (Seconds)
PHASE
(Degrees)
G
320
240
160
80
0
–80
–160
–240
480
400
14n
12n
10n
8n
6n
4n
2n
0
18n
16n
0
Figure 88. Output Filter Plot for ED, 8× Oversampling
0
–50
1
FREQUENCY (MHz)
CIRCUIT FREQUENCY RESPONSE
G
P
10
100
–10
–20
–30
–40
200
–200
120
40
–40
–120
GROUP DELAY (Seconds)
PHASE
(Degrees)
MAGNITUDE (dB)
0
Figure 89. Output Filter Plot for HD, 4× Oversampling
PRINTED CIRCUIT BOARD (PCB) LAYOUT
The ADV7340/ADV7341 are highly integrated circuits
containing both precision analog and high speed digital
circuitry. They have been designed to minimize interference
effects on the integrity of the analog circuitry by the high speed
digital circuitry. It is imperative that these same design and
layout techniques be applied to the system-level design so that
optimal performance is achieved.
The layout should be optimized for lowest noise on the
ADV7340/ADV7341 power and ground planes by shielding the
digital inputs and providing good power supply decoupling.
It is recommended to use a 4-layer printed circuit board with
ground and power planes separating the signal trace layer and
the solder side layer.
Component Placement
Component placement should be carefully considered to
separate noisy circuits, such as clock signals and high speed
digital circuitry from analog circuitry.
The external loop filter components and components connected
to the COMP, V
REF
, and R
SET
pins should be placed as close as
possible to and on the same side of the PCB as the
ADV7340/ADV7341. Adding vias to the PCB to get the
components closer to the ADV7340/ADV7341 is not
recommended.
It is recommended that the ADV7340/ADV7341 be placed as
close as possible to the output connector, with the DAC output
traces as short as possible.
The termination resistors on the DAC output traces should be
placed as close as possible to and on the same side of the PCB as
the ADV7340/ADV7341. The termination resistors should
overlay the PCB ground plane.
External filter and buffer components connected to the DAC
outputs should be placed as close as possible to the
ADV7340/ADV7341 to minimize the possibility of noise
pickup from neighboring circuitry, and to minimize the effect
of trace capacitance on output bandwidth. This is particularly
important when operating in low drive mode (R
SET
= 4.12 kΩ,
R
L
= 300 Ω).
Power Supplies
It is recommended that a separate regulated supply be provided
for each power domain (V
AA
, V
DD
, V
DD_IO
, and PV
DD
). For
optimal performance, linear regulators rather than switch mode
regulators should be used. If switch mode regulators must be
used, care must be taken with regard to the quality of the output
voltage in terms of ripple and noise. This is particularly true for
the V
AA
and PV
DD
power domains. Each power supply should be
individually connected to the system power supply at a single
point through a suitable filtering device, such as a ferrite bead.
相關(guān)PDF資料
PDF描述
ADV7341BSTZ Multiformat Video Encoder, Six 12-Bit Noise Shaped Video㈢ DACS
ADV7341EBZ Multiformat Video Encoder, Six 12-Bit Noise Shaped Video㈢ DACS
ADV7343BSTZ Multiformat Video Encoder Six, 11-Bit, 297 MHz DACs
ADV7342 Multiformat Video Encoder Six, 11-Bit, 297 MHz DACs
ADV7342BSTZ Multiformat Video Encoder Six, 11-Bit, 297 MHz DACs
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADV7341BSTZ 制造商:Analog Devices 功能描述:Video Encoder 6DAC 12-Bit 64-Pin LQFP Tray 制造商:Analog Devices 功能描述:MULTI-FORMAT VIDEO ENCODER SIX 12-BIT NOISE SHAPED VIDEO DAC - Bulk
ADV7341EBZ 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat Video Encoder, Six 12-Bit Noise Shaped Video㈢ DACS
ADV7342 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat Video Encoder Six, 11-Bit, 297 MHz DACs
ADV7342BSTZ 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat Video Encoder Six, 11-Bit, 297 MHz DACs
ADV7343 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat Video Encoder Six, 11-Bit, 297 MHz DACs
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