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參數(shù)資料
| 型號： | AD9775EB |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 14-Bit, 160 MSPS 2X/4X/8X Interpolating Dual TxDAC+ D/A Converter |
| 中文描述： | 14位，160 MSPS的2X/4X/8X TxDAC系列插雙D / A轉(zhuǎn)換 |
| 文件頁數(shù)： | 27/48頁 |
| 文件大?。?/td> | 6054K |
| 代理商： | AD9775EB |
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REV. 0
AD9775
–27–
MODULATION, INTERPOLATION = 2
×
With Control Register 01h, Bits 7 and 6 set to “01,” the inter-
polation rate of the AD9775 is 2
×
. Modulation is achieved by
multiplying successive samples at the interpolation filter output
by the sequence (1, –1). Figures 26a–26d represent the spectral
response of the AD9775 DAC output with 2
×
interpolation in
the various modulation modes to a narrow band baseband signal
(again, the tall rectangles in the graphic). The advantage of
interpolation becomes clear in Figures 26a–26d, where it can
be seen that the images that would normally appear in the spec-
trum around the input data rate frequency are suppressed by
>70 dB. Another significant point is that the interpolation filter-
ing is done previous to the digital modulator. For this reason, as
Figures 26a–26d show, the pass band of the interpolation
filters can be frequency shifted, giving the equivalent of a
high pass digital filter.
Note that when using the f
S
/4 modulation mode, there is no true
stop band as the band edges coincide with each other. In the f
S
/8
modulation mode, amplitude scaling occurs over only a portion of
the digital filter pass band due to constructive addition over just
that section of the band.
Figure 26. Effects of Digital Modulation on DAC Output Spectrum, Interpolation = 2
×
f
OUT
(
f
DATA
)
0
0.5
A
–100
0
–80
–60
–40
–20
1.0
1.5
2.0
Figure 26a. 2
×
Interpolation, Modulation = Disabled
f
OUT
(
f
DATA
)
0
0.5
A
–100
0
–80
–60
–40
–20
1.0
1.5
2.0
Figure 26b. 2
×
Interpolation, Modulation = f
DAC
/2
f
OUT
(
f
DATA
)
0
0.5
A
–100
0
–80
–60
–40
–20
1.0
1.5
2.0
Figure 26c. 2
×
Interpolation, Modulation = f
DAC
/4
f
OUT
(
f
DATA
)
0
0.5
A
–100
0
–80
–60
–40
–20
1.0
1.5
2.0
Figure 26d. 2
×
Interpolation, Modulation = f
DAC
/8
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參數(shù)描述 |
|---|---|
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| AD9775-EBZ | 功能描述:BOARD EVALUATION FOR AD9775 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 數(shù)模轉(zhuǎn)換器 (DAC) 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 系列:- DAC 的數(shù)量:4 位數(shù):12 采樣率（每秒）:- 數(shù)據(jù)接口:串行，SPI? 設(shè)置時(shí)間:3µs DAC 型:電流/電壓 工作溫度:-40°C ~ 85°C 已供物品:板 已用 IC / 零件:MAX5581 |
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| AD9776A | 制造商:AD 制造商全稱:Analog Devices 功能描述:Dual, 12-/14-/16-Bit,1 GSPS Digital-to-Analog Converters |
| AD9776ABSVZ | 功能描述:IC DAC 12BIT 1.0GSPS 100TQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 設(shè)置時(shí)間:4µs 位數(shù):12 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-uMAX 包裝:管件 輸出數(shù)目和類型:2 電壓，單極 采樣率（每秒）:* 產(chǎn)品目錄頁面:1398 (CN2011-ZH PDF) |
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