- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄375249 > AD9856AST (ANALOG DEVICES INC) CMOS 200 MHz Quadrature Digital Upconverter PDF資料下載
參數(shù)資料
| 型號： | AD9856AST |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 通信及網(wǎng)絡 |
| 英文描述： | CMOS 200 MHz Quadrature Digital Upconverter |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PQFP48 |
| 封裝： | LQFP-48 |
| 文件頁數(shù)： | 15/32頁 |
| 文件大?。?/td> | 429K |
| 代理商： | AD9856AST |
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頁第12頁第13頁第14頁當前第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
AD9856
–15–
REV. B
Figure 24 describes the input timing for half word mode, burst
input timing operation.
In half word mode, data is input on the D<11:6> inputs. The
D<5:0> inputs are unused in this mode and should be tied to
DGND or DVDD. The AD9856 expects the data to be input in
the following manner: I<11:6>,I<5:0>,Q<11:6>,Q<5:0>.
Data is twos complement, the sign bit is D<11> in notation
I<11:0>,Q<11:0>.
The input sample rate for half word mode, when the third half-
band filter is engaged, is given by:
f
IN
=
SYSCLK
/2
N
where
N
is the CIC interpolation rate.
The input sample rate for half word mode, when the third half-
band filter is not engaged is given by:
f
IN
=
SYSCLK
/
N
where
N
is the CIC interpolation rate.
Figure 25 describes the input timing for quarter word, burst
input timing operation.
In quarter word mode, data is input on the D<11:9> inputs.
The D<8:0> inputs are unused in this mode and should be tied
to DGND or DVDD. The AD9856 expects the data to be input
in the following manner: I<11:9>, I<8:6>, I<5:3>, I<2:0>,
Q<11:9>, Q<8:6>, Q<5:3>, Q<2:0>. Data is twos comple-
ment, the sign bit is D<11> in notation I<11:0>, Q<11:0>.
The input sample rate for quarter word mode, when the third
half-band filter is engaged, is given by:
f
IN
=
SYSCLK/N
where
N
is the CIC interpolation rate.
Please note that Half-Band Filter #3 must be engaged when operat-
ing in quarter word mode.
TxENABLE
D(11:0)
INTERNAL I
INTERNAL Q
I0
Q0
I1
Q1
I2
Q2
I3
Q3
I4
Q4
I0
I1
I2
I3
Q0
Q1
Q2
Q3
Figure 22. 12-Bit Input Mode, Classic Burst Timing
TxENABLE
D(11:0)
INTERNAL I
INTERNAL Q
I0
Q0
I1
Q1
I2
Q2
I3
Q3
I4
Q4
I0
I1
I2
I3
Q0
Q1
Q2
Q3
Figure 23. 12-Bit Input Mode, Alternate TxENABLE Timing
TxENABLE
D(11:6)
INTERNAL I
INTERNAL Q
I0
I1
Q0
Q1
I0(11:6)
I0(5:0)
Q0(5:0)
I1(11:6)
I1(5:0)
Q1(11:6)
Q1(5:0)
I2(11:6)
Q0(11:6)
I2(5:0)
Figure 24. 6-Bit Input Mode, Burst Mode Timing
I0(11:9)
I0(8:6)
I0(5:3)
I0(2:0)
Q0(11:9)
Q0(8:6)
Q0(5:3)
Q0(2:0)
I1(11:9)
I1(8:6)
TxENABLE
D(11:9)
INTERNAL I
INTERNAL Q
I0
Q0
Figure 25. 3-Bit Input Mode, Burst Mode Timing
相關PDF資料 |
PDF描述 |
|---|---|
| AD9856 | CMOS 180 MHz Quadrature Digital Upconverter(時鐘頻率為180MHz,CMOS的積分上變頻器) |
| AD9857 | CMOS 200 MSPS 14-Bit Quadrature Digital Upconverter |
| AD9857AST | CMOS 200 MSPS 14-Bit Quadrature Digital Upconverter |
| AD9865 | Broadband Modem Mixed-Signal Front End |
| AD9865-EB | Broadband Modem Mixed-Signal Front End |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AD9856ASTZ | 功能描述:IC UPCONVERTER DGTL QUAD 48TQFP RoHS:是 類別:RF/IF 和 RFID >> RF 其它 IC 和模塊 系列:AD9856 標準包裝:100 系列:* |
| AD9857 | 制造商:AD 制造商全稱:Analog Devices 功能描述:CMOS 200 MSPS 14-Bit Quadrature Digital Upconverter |
| AD9857/PCB | 制造商:Analog Devices 功能描述:Evaluation Board For AD9857 |
| AD9857/PCBZ | 功能描述:BOARD EVALUATION FOR AD9857 RoHS:是 類別:RF/IF 和 RFID >> RF 評估和開發(fā)套件，板 系列:- 標準包裝:1 系列:- 類型:GPS 接收器 頻率:1575MHz 適用于相關產(chǎn)品:- 已供物品:模塊 其它名稱:SER3796 |
| AD9857/PCBZ | 制造商:Analog Devices 功能描述:EVAL BOARD, AD9857 DIRECT DIGITAL SYNTHE |
發(fā)布緊急采購，3分鐘左右您將得到回復。