參數(shù)資料
型號(hào)： ADV7342
廠商： Analog Devices, Inc.
英文描述： Multiformat Video Encoder Six, 11-Bit, 297 MHz DACs
中文描述： 六多格式視頻編碼器，11位，297兆赫數(shù)模轉(zhuǎn)換器
文件頁(yè)數(shù)： 66/88頁(yè)
文件大小： 1053K
代理商： ADV7342
ADV7342/ADV7343
Rev. 0 | Page 66 of 88
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–80
–70
–60
–50
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–20
–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
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–30
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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 ADV7342/ADV7343 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
ADV7342/ADV7343 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 ADV7342/
ADV7343. Adding vias to the PCB to get the components closer
to the ADV7342/ADV7343 are not recommended.
It is recommended that the ADV7342/ADV7343 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 ADV7342/ADV7343. 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 ADV7342/
ADV7343 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
ADV7342BSTZ Multiformat Video Encoder Six, 11-Bit, 297 MHz DACs
ADV7343 Multiformat Video Encoder Six, 11-Bit, 297 MHz DACs
ADV7344 Multiformat Video Encoder Six 14-Bit Noise Shaped Video DACs
ADV7344BSTZ Multiformat Video Encoder Six 14-Bit Noise Shaped Video DACs
ADV7390 Low Power, Chip Scale 10-Bit SD/HD Video Encoder
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
ADV7343BSTZ 功能描述:IC ENCODER VIDEO W/DAC 64-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉(zhuǎn)換器 系列:- 產(chǎn)品變化通告:Development Systems Discontinuation 26/Apr/2011 標(biāo)準(zhǔn)包裝:1 系列:- 類型:編碼器 應(yīng)用:DVB-S.2 系統(tǒng) 電壓 - 電源，模擬:- 電壓 - 電源，數(shù)字:- 安裝類型:- 封裝/外殼:模塊 供應(yīng)商設(shè)備封裝:模塊 包裝:散裝 其它名稱:Q4645799
ADV7343WBSTZ 功能描述:IC ENCODER VID 12BIT DAC 64LQFP 制造商:analog devices inc. 系列:- 包裝:托盤 零件狀態(tài):在售 類型:視頻編碼器 應(yīng)用:DVD，Blu-Ray 電壓 - 電源，模擬:2.6 V ~ 3.46 V 電壓 - 電源，數(shù)字:1.71 V ~ 1.89 V 安裝類型:表面貼裝 封裝/外殼:64-LQFP 供應(yīng)商器件封裝:64-LQFP（10x10） 標(biāo)準(zhǔn)包裝:1
ADV7343WBSTZ-RL 功能描述:Video Encoder IC DVD, Blu-Ray 64-LQFP (10x10) 制造商:analog devices inc. 系列:- 包裝:帶卷（TR） 零件狀態(tài):有效 類型:視頻編碼器 應(yīng)用:DVD，Blu-Ray 電壓 - 電源，模擬:2.6 V ~ 3.46 V 電壓 - 電源，數(shù)字:1.71 V ~ 1.89 V 安裝類型:表面貼裝 封裝/外殼:64-LQFP 供應(yīng)商器件封裝:64-LQFP（10x10） 標(biāo)準(zhǔn)包裝:1,500
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