- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373971 > AD9953ASV (ANALOG DEVICES INC) 400 MSPS 14-Bit, 1.8V CMOS Direct Digital Synthesizer PDF資料下載
參數(shù)資料
| 型號(hào)： | AD9953ASV |
| 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, 1.8V CMOS Direct Digital Synthesizer |
| 中文描述： | DSP-NUM CONTROLLED OSCILLATOR, PQFP48 |
| 封裝： | TQFP-48 |
| 文件頁(yè)數(shù)： | 28/42頁(yè) |
| 文件大小： | 473K |
| 代理商： | AD9953ASV |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)當(dāng)前第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)
PRELIMINARY TECHNICAL DATA
beginning address and the ramp rate timer begins to count down to 1. When the ramp rate timer
completes a cycle, the RAM address generator increments to the next address, the timer reloads the
ramp rate bits and continues counting down. This sequence continues until the RAM address
generator has incremented to an address equal to the RAM Segment Final Address bits of the
current RSCW. Upon reaching this terminal address, the RAM address generator reloads the RAM
Segment Beginning Address bits and the sequence repeats.
The
sequence of circulating through the specified RAM addresses repeats for as long as the part is
programmed for this mode. The No Dwell bit is a don’t care in this mode.
Notes to the Continuous Re-circulate mode:
1) The user must insure that the beginning address is lower than the final address.
2) Changing profiles or issuing an I/O UPDATE automatically terminates the current sweep
and starts the next sweep.
3) Setting the RAM destination bit true such that the RAM output drives the phase-offset adder
is valid. While the above discussion describes a frequency sweep, a phase sweep operation
is also available.
RAM Controlled Modes of Operation Summary
The AD9953 offers 5 modes of RAM controlled operation, as shown in table 3 below.
RSCW<7:5>
(binary)
000
Direct Switch Mode
AD9953
Mode
Notes
No sweeping, Profiles valid, No
Dwell invalid
Sweeping, Profiles valid, No Dwell
valid
Sweeping, Profile<0> is a direction
control bit, No Dwell invalid
Sweeping, Profiles valid, No Dwell
invalid
Sweeping, Profiles valid, No Dwell
invalid
Invalid mode – default to Direct
Switch
001
Ramp Up
010
Bi-directional Ramp
011
Continuous Bi-
directional Ramp
Continuous Re-circulate
100
101,110,111
OPEN
Table 3 RAM Modes of Operation
Internal Profile Control
The AD9953 offers a mode in which a composite frequency sweep can be built, for which the
timing control is software programmable. The “internal profile control” capability disengages the
REV. PrB 1/30/03
Page 28
Analog Devices, Inc.
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) |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。