- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373967 > AD9786 (Analog Devices, Inc.) 16-Bit, 200 MSPS/500 MSPS TxDAC+ with 2】/4】/8】 Interpolation and Signal Processing PDF資料下載
參數(shù)資料
| 型號： | AD9786 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 16-Bit, 200 MSPS/500 MSPS TxDAC+ with 2】/4】/8】 Interpolation and Signal Processing |
| 中文描述： | 16位，200 MSPS/500 MSPS的TxDAC系列2】/ 4】/ 8】插值與信號處理 |
| 文件頁數(shù)： | 40/60頁 |
| 文件大?。?/td> | 1497K |
| 代理商： | AD9786 |
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頁當前第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁
AD9786
Rev. 0 | Page 40 of 60
FILTERED INTERPOLATION IMAGES
f
S
/8 MODULATION
f
S
/4 MODULATION
–
f
D
–
f
D
/
–
f
D
/
–
f
D
/
–
f
D
/
–
f
D
/
–
f
D
/
0
0
0
f
D
/
f
D
/
3
D
/
f
D
/
5
D
/
3
D
/
7
D
/
f
D
–
f
D
/
–
f
D
–
f
D
/
–
f
D
/
–
f
D
/
–
f
D
/
–
f
D
/
–
f
D
/
f
D
/
f
D
/
3
D
/
f
D
/
5
D
/
3
D
/
7
D
/
f
D
–
f
D
/
–
f
D
–
f
D
/
–
f
D
/
–
f
D
/
–
f
D
/
–
f
D
/
–
f
D
/
f
D
/
f
D
/
3
D
/
f
D
/
5
D
/
3
D
/
7
D
/
f
D
–
f
D
/
0
Figure 70. Complex Modulation with Negative Frequency Aliasing
Table 35. Dual Channel Complex Modulation with Hilbert
Hilbert
Mode
0
Hilbert transform off
1
Hilbert transform on
When complex modulation is performed, the entire spectrum is
translated by the modulation factor. If the resulting modulated
spectrum is not mirror symmetric about dc, when the DAC
synthesizes the modulated signal, negative frequency compo-
nents will fall on the positive frequency axis and can cause
destructive summation of the signals, as shown in Figure 70. For
some applications, this can distort the modulated output signal.
Re
Im
f
Re
Im
f
Re
Im
f
Re
Im
f
00
00
A/2
A/2
A/2
A/2
A
A
A/2
A/2
A/2
A/2
A/2
A/2
A/2
A/2
X = Ae
j2
π
(f + fm)t
Y = Ae
j2
π
(f + fm)t –
π
/2
Z = HILBERT(Y)
C = X – Z
0
Figure 71. Negative Frequency Image Rejection
Referring to Figure 71, by performing a second complex
modulation with a modulating signal having a fixed
π
/2 phase
difference, Figure (Y), relative to the original complex
modulation signal, Figure (X), taking the Hilbert transform of
the new resulting complex modulation, and subtracting it from
the original complex modulation output all negative frequency
components can be folded in phase to the positive frequency
axis before being synthesized by the DAC. When the DAC
synthesizes the modulated output there are no negative
frequency components to fold onto the positive frequency axis
out of phase; consequently no distortion is produced as a result
of the modulation process.
0
ALIASED NEGATIVE FREQUENCY INTERPOLATION IMAGES
0.5
–0.5
–0.4
–0.3
–0.2
–0.1
0
0.1
0.2
0.3
0.4
d
–150
0
–50
–100
Figure 72. Negative Frequency Aliasing Distortion
Figure 72 shows this effect at the DAC output for a mirror
asymmetric signal about dc produced by complex modulation
without a Hilbert transform. The signal bandwidth was nar-
rowed to show the aliased negative frequency interpolation
images.
相關PDF資料 |
PDF描述 |
|---|---|
| AD9786BSVRL | 16-Bit, 200 MSPS/500 MSPS TxDAC+ with 2】/4】/8】 Interpolation and Signal Processing |
| AD9801 | CCD Signal Processor For Electronic Cameras(用于電子照相機的CCD信號處理器) |
| AD9802JST | Silver Mica Capacitor; Capacitance:10pF; Capacitance Tolerance: 5%; Series:CD17; Voltage Rating:500VDC; Capacitor Dielectric Material:Mica; Termination:Radial Leaded; Lead Pitch:5.9mm; Leaded Process Compatible:Yes RoHS Compliant: Yes |
| AD9802 | .50" x 50 Black/Clear 240 Industrial Label Supply RoHS Compliant: NA |
| AD9803 | CCD And Video Signal Processor For Electronic Cameras(電子照相機的CCD信號和視頻信號處理器) |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AD9786BSV | 制造商:Analog Devices 功能描述:DAC 1-CH Interpolation Filter 16-bit 80-Pin TQFP EP 制造商:Analog Devices 功能描述:IC 16BIT DAC SMD 9786 TQFP80 |
| AD9786BSVRL | 制造商:Analog Devices 功能描述:DAC 1-CH Interpolation Filter 16-bit 80-Pin TQFP EP T/R |
| AD9786BSVZ | 功能描述:IC DAC 16BIT INTERPOL/SP 80TQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉換器 系列:TxDAC+® 標準包裝:1 系列:- 設置時間:4.5µs 位數(shù):12 數(shù)據(jù)接口:串行，SPI? 轉換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:8-SOICN 包裝:剪切帶 (CT) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:* 其它名稱:MCP4921T-E/SNCTMCP4921T-E/SNRCTMCP4921T-E/SNRCT-ND |
| AD9786BSVZRL | 功能描述:IC DAC 16BIT INTERPOL/SP 80TQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉換器 系列:TxDAC+® 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1,000 系列:- 設置時間:1µs 位數(shù):8 數(shù)據(jù)接口:串行 轉換器數(shù)目:8 電壓電源:雙 ± 功率耗散（最大）:941mW 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:24-SOIC W 包裝:帶卷 (TR) 輸出數(shù)目和類型:8 電壓，單極 采樣率（每秒）:* |
| AD9786-EB | 制造商:Rochester Electronics LLC 功能描述:EVAL BOARD FOR AD9786 - Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復。