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參數資料
型號: AD9951YSV-REEL7
廠商: ANALOG DEVICES INC
元件分類: 數字信號處理外設
英文描述: Hook-Up Wire; Conductor Size AWG:18; No. Strands x Strand Size:16 x 30; Jacket Color:Blue; Approval Bodies:UL, CSA; Approval Categories:UL AWM Style 1061, CSA Type AWM; Conductor Material:Copper RoHS Compliant: Yes
中文描述: DSP-NUM CONTROLLED OSCILLATOR, PQFP48
封裝: EXPOSED PAD, PLASTIC, MS-026-ABC, TQFP-48
文件頁數: 23/28頁
文件大小: 825K
代理商: AD9951YSV-REEL7
AD9951
When the CFR1<3> bit is 0 and the PWRDWNCTL input pin is
high, the AD9951 is put into a fast recovery power-down mode.
In this mode, the digital logic and the DAC digital logic are
powered down. The DAC bias circuitry, PLL, oscillator, and
clock input circuitry is NOT powered down.
Rev. 0 | Page 23 of 28
When the CFR1<3> bit is high, and the PWRDWNCTL input
pin is high, the AD9951 is put into the full power-down mode.
In this mode, all functions are powered down. This includes the
DAC and PLL, which take a significant amount of time to
power up.
When the PWRDWNCTL input pin is high, the individual
power-down bits (CFR1<7>, <5:4>) are invalid (Don’t Care)
and unused. When the PWRDWNCTL input pin is low, the
individual power-down bits control the power-down modes of
operation.
Note that the power-down signals are all designed such that a
Logic 1 indicates the low power mode and a Logic 0 indicates
the active or powered up mode.
Table 8 indicates the logic level for each power-down bit that
drives out of the AD9951 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 away from the actual supply source works best.
Table 8. Power-Down Control Functions
Control
PWRDWNCTL = 0 CFR1<3> Don’t Care
Mode Active
Software Control
Description
Digital Power-Down = CFR1<7>
DAC Power-Down = CFR1<5>
Input Clock Power-Down = CFR1<4>
Digital Power-Down = 1’b1
DAC Power-Down = 1’b0
Input Clock Power-Down = 1’b0
Digital 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PDF資料
PDF描述
AD9951 400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
AD9951PCB 400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
AD9951YSV 400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
AD9952YSV-REEL7 Hook-Up Wire; Conductor Size AWG:12; No. Strands x Strand Size:65 x 30; Jacket Color:Red; Approval Bodies:UL, CSA; Approval Categories:UL AWM Style 1015, CSA Type TEW, JQA-F-, Passes VW-1 Flame Test; Conductor Material:Copper RoHS Compliant: Yes
AD9952 400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
相關代理商/技術參數
參數描述
AD9951YSVZ 功能描述:IC DDS DAC 14BIT 1.8V 48-TQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 直接數字合成 (DDS) 系列:- 產品變化通告:Product Discontinuance 27/Oct/2011 標準包裝:2,500 系列:- 分辨率(位):10 b 主 fclk:25MHz 調節字寬(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) 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR)
AD9951YSVZ-REEL7 制造商:Analog Devices 功能描述:DGTL SYNTHESIZER 48TQFP EP TAPE AND REEL - Tape and Reel
AD9952 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
AD9952/PCB 制造商:Analog Devices 功能描述:Evaluation Board For Digital Synthesizer 制造商:Analog Devices 功能描述:400 MSPS 14BIT CMOS DIRECT DGTL SYNTHESIZER - Bulk 制造商:Rochester Electronics LLC 功能描述:- Bulk
AD9952YSV 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述:IC DDS 400MSPS SMD 9952 TQFP48
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