參數(shù)資料
型號： AD9953ASV
廠商： ANALOG DEVICES INC
元件分類： 數(shù)字信號處理外設(shè)
英文描述： 400 MSPS 14-Bit, 1.8V CMOS Direct Digital Synthesizer
中文描述： DSP-NUM CONTROLLED OSCILLATOR, PQFP48
封裝： TQFP-48
文件頁數(shù)： 42/42頁
文件大?。?/td> 473K
代理商： AD9953ASV
PRELIMINARY TECHNICAL DATA
When the CFR1<3> bit is zero, and the PwrDwnCtl input pin is high, the AD9953 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, comparator, PLL, oscillator, and clock input circuitry is
NOT powered down. The comparator can be powered down by setting the Comparator Power
Down Bit, CFR1<6> =1.
When the CFR1<3> bit is high, and the PwrDwnCtl input pin is high, the AD9953 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 are unused; however the Comparator Power Down bit, CFR1<6>, will
continue to control the power-down of the comparator. When the PwrDwnCtl input pin is low, the
individual power down bits control the power down modes of operation.
NOTE – The power down signals are all designed such that a logic 1 indicates the low power mode
and a logic zero indicates the active, or powered up mode.
The table below indicates the logic level for each power down bit that drives out of the AD9953
core logic to the analog section and the digital clock generation section of the chip for the External
Power Down operation.
Control
Mode active
Description
PwrDwnCtl = 0
CFR1<3> don’t
care
DAC power down = CFR1<5>
Input Clock power down = CFR1<4>
PwrDwnCtl = 1
CFR1<3> = 0
Control,
Fast recovery
power down
mode
PwrDwnCtl = 1
CFR1<3> = 1
Control,
Full power down
mode
Input Clock power down = 1’b1;
Table 7 Power Down Control Functions
AD9953
REV. PrB 1/30/03
Page 42
Analog Devices, Inc.
Software
Control
Digital power down = CFR1<7>
Comparator power down = CFR1<6>
External
Digital power down = 1’b1;
Comparator power down = 1’b0 OR CFR1<6>;
DAC power down = 1’b0;
Input Clock power down = 1’b0;
External
Digital power down = 1’b1;
Comparator power down = 1’b1;
DAC power down = 1’b1;
相關(guān)PDF資料
PDF描述
AD9953PCB 400 MSPS 14-Bit, 1.8V CMOS Direct Digital Synthesizer
AD9954 400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
AD9954YSV 400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
AD9954YSV-REEL7 400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
AD9956 2.7 GHz DDS-Based AgileRF
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD9953PCB 制造商:AD 制造商全稱:Analog Devices 功能描述:400 MSPS 14-Bit, 1.8V CMOS Direct Digital Synthesizer
AD9953YSV 制造商:Analog Devices 功能描述:Direct Digital Synthesizer 400MHz 1-DAC 14-Bit Serial 48-Pin TQFP EP 制造商:Rochester Electronics LLC 功能描述:AD9953 400 MSPS DDS W/ 14 BIT DAC - Bulk 制造商:Analog Devices 功能描述:IC DDS 400MSPS SMD 9953 TQFP48
AD9953YSV-REEL7 制造商:Analog Devices 功能描述:Direct Digital Synthesizer 400MHz 1-DAC 14-Bit Serial 48-Pin TQFP EP T/R
AD9953YSVZ 功能描述:IC DDS DAC 14BIT 400MSPS 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)
AD9953YSVZ-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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