- 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)： | 32/60頁 |
| 文件大小： | 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頁當(dāng)前第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
Interpolation Modes
Rev. 0 | Page 32 of 60
Table 28. Interpolation Modes
INTERP[1]
0
0
1
1
INTERP[0]
0
1
0
1
Mode
No Interpolation
×2 Interpolation
×4 Interpolation
×8 Interpolation
Interpolation is the process of increasing the number of points
in a time domain waveform by approximating points between
the input data points, on a uniform time grid. This produces a
higher output data rate. Applied to an interpolation DAC, a
digital interpolation filter is used to approximate the inter-
polated points, having an output data rate increased by the
interpolation factor. Interpolation filter responses are achieved
by cascading individual digital filter banks, whose filter
coefficients are given in Table 23, Table 24, and Table 25. Filter
responses are shown in Figure 57, which shows the interpola-
tion filters of the AD9786 under different interpolation rates,
normalized to the input data rate, f
SIN
.
The digital filter’s frequency domain response exhibits
symmetry about half the output data rate and dc. It will cause
images of the input data to be shaped by the interpolation
filter’s frequency response. This has the advantage of causing
input data images, which fall in the stop band of the digital filter
to be rejected by the stop-band attenuation of the interpolation
filter; input data images falling in the interpolation filter’s pass
band will be passed. In band-limited applications, the images at
the output of the DAC must be limited by an analog reconstruc-
tion filter. The complexity of the analog reconstruction filter is
determined by the proximity of the closest image to the
required signal band. Higher interpolation rates yield larger
stop-band regions, suppressing more input images and resulting
in a much relaxed analog reconstruction filter.
A DAC shapes its output with a sinc function, having a null at
the sampling frequency of the DAC. The higher the DAC sam-
pling rate compared to the input signal bandwidth, the less the
DAC sinc function will shape the output. The higher the
interpolation rate, the more input data images fall in the
interpolation filter stop band and are rejected; the bandwidth
between passed images is larger with higher interpolation
factors. The sinc function shaping is also reduced with a higher
interpolation factor.
Table 29. Sinc Shaping at Band Edge of Interpolation Filters
Sinc Shaping
at 0.43f
SIN
(dB)
No Interpolation
–2.8241
×2 Interpolation
–0.6708
×4 Interpolation
–0.1657
×8 Interpolation
–0.0413
Mode
Bandwidth to First Image
f
SIN
2f
SIN
4f
SIN
8f
SIN
相關(guān)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(jī)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(jī)的CCD信號和視頻信號處理器) |
相關(guān)代理商/技術(shù)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(zhuǎn)換器 系列:TxDAC+® 標(biāo)準(zhǔn)包裝:1 系列:- 設(shè)置時(shí)間:4.5µs 位數(shù):12 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)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(yīng)商設(shè)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(zhuǎn)換器 系列:TxDAC+® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1,000 系列:- 設(shè)置時(shí)間:1µs 位數(shù):8 數(shù)據(jù)接口:串行 轉(zhuǎn)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(yīng)商設(shè)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(fù)。