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參數(shù)資料
型號(hào)： AD9954YSV
廠商： ANALOG DEVICES INC
元件分類： 數(shù)字信號(hào)處理外設(shè)
英文描述： 400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
中文描述： DSP-NUM CONTROLLED OSCILLATOR, PQFP48
封裝： EXPOSED PAD, PLASTIC, MS-026-ABC, TQFP-48
文件頁(yè)數(shù)： 34/36頁(yè)
文件大?。?/td> 1027K
代理商： AD9954YSV
AD9954
Rev. 0 | Page 34 of 36
Table 13 indicates the logic level for each power-down bit that
drives out of the AD9954 core logic to the analog section and
the digital clock generation section of the chip for the external
power-down operation.
Layout Considerations
For the best performance, the following layout guidelines
should be observed. Always provide the analog power supply
(AVDD) and the digital power supply (DVDD) on separate
supplies, even if just from two different voltage regulators
driven by a common supply. Likewise, the ground connections
(AGND, DGND) should be kept separate as far back to the
source as possible (i.e., separate the ground planes on a local-
ized board, even if the grounds connect to a common point in
the system). Bypass capacitors should be placed as close to the
device pin as possible. Usually a multitiered bypassing scheme
consisting of a small high frequency capacitor (100 pF) placed
close to the supply pin and progressively larger capacitors
(0.1 μF, 10 μF) further back to the actual supply source works best.
Table 13. Power-Down Control Functions
Control
PWRDWNCTL = 0 CFR1<3> Don’t Care
Mode Active
Software Control
Description
Digital Power-Down = CFR1<7>
Comparator Power-Down = CFR1<6>
DAC Power-Down = CFR1<5>
Input Clock Power-Down = CFR1<4>
Digital Power-Down = 1’b1
Comparator Power-Down = 1’b0 Or CFR1<6>
DAC Power-Down = 1’b0
Input Clock Power-Down = 1’b0
Digital Power-Down = 1’b1
Comparator Power-Down = 1’b1
DAC Power-Down = 1’b1
Input Clock Power-Down = 1’b1
PWRDWNCTL = 1 CFR1<3> = 0
External Control,
Fast Recovery Power-Down Mode
PWRDWNCTL = 1 CFR1<3> = 1
External Control,
Full Power-Down Mode
相關(guān)PDF資料
PDF描述
AD9954YSV-REEL7 400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
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AD9956YCPZ-REEL1 2.7 GHz DDS-Based AgileRF
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD9954YSV-REEL7 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述:
AD9954YSVZ 功能描述:IC DDS DAC 14BIT 1.8V 48-TQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 直接數(shù)字合成 (DDS) 系列:- 產(chǎn)品變化通告:Product Discontinuance 27/Oct/2011 標(biāo)準(zhǔn)包裝:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 調(diào)節(jié)字寬（位）:32 b 電源電壓:2.97 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR)
AD9954YSVZ 制造商:Analog Devices 功能描述:IC DDS 400MSPS SMD 9954 TQFP48
AD9954YSVZ1 制造商:AD 制造商全稱:Analog Devices 功能描述:400 MSPS, 14-Bit, 1.8 V CMOS, Direct Digital Synthesizer
AD9954YSVZ-REEL7 功能描述:IC DDS DAC 14BIT 1.8V 48TQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 直接數(shù)字合成 (DDS) 系列:- 產(chǎn)品變化通告:Product Discontinuance 27/Oct/2011 標(biāo)準(zhǔn)包裝:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 調(diào)節(jié)字寬（位）:32 b 電源電壓:2.97 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR)
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