Figure 18 " />
參數(shù)資料
型號(hào): DAC5674IPHPRG4
廠商: Texas Instruments
文件頁(yè)數(shù): 9/39頁(yè)
文件大?。?/td> 0K
描述: IC DAC 14BIT 400MSPS 48-HTQFP
產(chǎn)品培訓(xùn)模塊: Data Converter Basics
標(biāo)準(zhǔn)包裝: 1,000
系列: CommsDAC™
設(shè)置時(shí)間: 20ns
位數(shù): 14
數(shù)據(jù)接口: 并聯(lián)
轉(zhuǎn)換器數(shù)目: 1
電壓電源: 模擬和數(shù)字
功率耗散(最大): 550mW
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 48-TQFP 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝: 48-HTQFP(7x7)
包裝: 帶卷 (TR)
輸出數(shù)目和類型: 2 電流,單極
采樣率(每秒): 400M
配用: 296-30860-ND - EVAL MODULE FOR DAC5674
DAC5674
SLWS148A SEPTEMBER 2003 REVISED OCTOBER 2005
www.ti.com
17
High-Pass/Low-Pass 4
y Interpolation Filter Operation
Figure 18 shows the high-pass/low-pass filter configuration. Images at Fdata IF and 3Fdata + IF can be
selected. Note that the latter image severely attenuates by the sinx/x response. The transition bandwidths of
filter 1 and filter 2 occupy 0.2Fdata. The combination of these transition bands results in an output IF between
0.6
…0.8Fdata.
Input Spectrum
Output of DUC
1st 2x
interpolation
filter
Spectrum after
2x interpolation
2nd 2x
interpolation
filter
Spectrum after
4x interpolation
Fdata
=
Fdac
80 dB of
attenuation
Unwanted images
removed by LPF
80 dB of
attenuation
80 dB of
attenuation
Figure 18. High-Pass/Low-Pass 4
y Interpolation Filter Operation
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