參數(shù)資料
型號(hào): AD6654BBC
廠商: Analog Devices Inc
文件頁(yè)數(shù): 31/88頁(yè)
文件大?。?/td> 0K
描述: IC ADC 14BIT W/6CH RSP 256CSPBGA
標(biāo)準(zhǔn)包裝: 1
位數(shù): 14
采樣率(每秒): 92.16M
數(shù)據(jù)接口: 串行,并聯(lián)
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 2.5W
電壓電源: 模擬和數(shù)字
工作溫度: -25°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 256-BGA,CSPBGA
供應(yīng)商設(shè)備封裝: 256-CSPBGA(17x17)
包裝: 托盤
輸入數(shù)目和類型: 1 個(gè)差分,單極
AD6654
Rev. 0 | Page 37 of 88
EXAMPLE CALCULATIONS
Goal: Implement a filter with an input sample rate of 100 MHz
requiring 100 dB of alias rejection for a ±1.4 MHz pass band.
Solution: First determine the percentage of the sample rate that
is represented by the pass band.
4
.
1
MHz
100
MHz
4
.
1
100
=
×
=
FRACTION
BW
In the 100 dB column in Table 15, find the value greater than
or equal to the pass-band percentage of the clock rate. Then
find the corresponding rate decimation factor (MCIC). For an
MCIC of 6, the frequency that has 100 dB of alias rejection is
1.48%, which is slightly larger than the 1.4% calculated.
Therefore, for this example, the maximum bound on CIC
decimation rate is 6. A higher MCIC means less alias rejection
than the 100 dB required.
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