- 您現在的位置：買賣IC網 > PDF目錄373971 > AD9953PCB (Analog Devices, Inc.) 400 MSPS 14-Bit, 1.8V CMOS Direct Digital Synthesizer PDF資料下載
參數資料
| 型號： | AD9953PCB |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | XO, clock |
| 英文描述： | 400 MSPS 14-Bit, 1.8V CMOS Direct Digital Synthesizer |
| 中文描述： | 400 MSPS的14位，1.8V CMOS的直接數字頻率合成器 |
| 文件頁數： | 12/42頁 |
| 文件大小： | 473K |
| 代理商： | AD9953PCB |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁當前第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁
PRELIMINARY TECHNICAL DATA
The modes of operation are summarized in the table below. Please note the PLL multiplier is
controlled via the CFR2<7:3> bits, independently of the CFR2<0> bit.
ClkModeSelect
CFR1<4>
CFR2<7:3>
AD9953
SYSTEM
CLOCK
F
clk
= F
osc
x M
F
clk
= F
osc
F
clk
= 0
F
clk
= F
ref
x M
F
clk
= F
ref
Frequency
Range (MHz)
80 < F
clk
< 400
20 < F
clk
< 30
F
clk
= 0
80 < F
clk
< 400
5 < F
clk
< 400
HIGH
HIGH
HIGH
LOW
LOW
LOW
LOW
HIGH
X
X
3 < M < 21
M < 4 or M > 20
X
3 < M < 21
M < 4 or M > 20
Table 2 Clock Input Modes of Operation
Phase Locked Loop (PLL)
The PLL allows multiplication of the REFCLK frequency. Control of the PLL is accomplished by
programming the 5-bit REFCLK Multiplier portion of Control Function Register #2, bits <7:3>.
When programmed for values ranging from 04h – 14h (4-20 decimal), the PLL multiplies the
REFCLK input frequency by the corresponding decimal value. The maximum output frequency of
the PLL is restricted to 400MHz, however. Whenever the PLL value is changed, the user should
be aware that time must be allocated to allow the PLL to lock (approximately 1ms).
The PLL is bypassed by programming a value outside the range of 4-20 (decimal). When
bypassed, the PLL is shut down to conserve power.
DAC Output
The AD9953 incorporates an integrated 14-bit current output DAC. Two complementary outputs
provide a combined full-scale output current (I
out
). Differential outputs reduce the amount of
common-mode noise that might be present at the DAC output, offering the advantage of an
increased signal-to-noise ratio. The full-scale current is controlled by means of an external resistor
(R
set
) connected between the DAC_Rset pin and the DAC ground (AGND). The full-scale current
is proportional to the resistor value as follows:
R
set
= 39.19/I
out
The maximum full-scale output current of the combined DAC outputs is 15mA, but limiting the
output to 10mA provides the best spurious-free-dynamic-range (SFDR) performance. The DAC
output compliance range is AVDD+0.250V to AVDD-375V. Voltages developed beyond this
range will cause excessive DAC distortion and could potentially damage the DAC output circuitry.
Proper attention should be paid to the load termination to keep the output voltage within this
compliance range.
Serial IO Port
REV. PrB 1/30/03
Page 12
Analog Devices, Inc.
相關PDF資料 |
PDF描述 |
|---|---|
| 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 |
| AD9956YCPZ-REEL1 | 2.7 GHz DDS-Based AgileRF |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 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) |
| 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) |
| AD9954 | 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 |
發布緊急采購，3分鐘左右您將得到回復。