參數(shù)資料
型號: AD7400AYNSZ
廠商: Analog Devices Inc
文件頁數(shù): 8/20頁
文件大小: 0K
描述: IC MODULATOR SIGMADELTA 8-SMD
產(chǎn)品變化通告: AD7400AYNSZ Discontinuation 23/Mar/2012
標(biāo)準(zhǔn)包裝: 50
類型: 調(diào)制器
分辨率(位): 16 b
采樣率(每秒): 10M
數(shù)據(jù)接口: 串行
電壓電源: 單電源
電源電壓: 4.5 V ~ 5.5 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 8-SMD,鷗翼型
供應(yīng)商設(shè)備封裝: 8-DIP 鷗翼型
包裝: 管件
產(chǎn)品目錄頁面: 798 (CN2011-ZH PDF)
AD7400A
Data Sheet
Rev. D | Page 16 of 20
/*DIFFERENTIATOR (including decimation
stage)
Perform the differentiation stage (FIR) at a
lower speed.
+
+
Z–1
+
Z–1
ACC3
DIFF1
DIFF2
DIFF3
WORD_CLK
07077-
022
Figure 26. Differentiator
Z = one sample delay
WORD_CLK = output word rate
*/
always @ (posedge word_clk or posedge reset)
if(reset)
begin
acc3_d2 <= 0;
diff1_d <= 0;
diff2_d <= 0;
diff1 <= 0;
diff2 <= 0;
diff3 <= 0;
end
else
begin
diff1 <= acc3 - acc3_d2;
diff2 <= diff1 - diff1_d;
diff3 <= diff2 - diff2_d;
acc3_d2 <= acc3;
diff1_d <= diff1;
diff2_d <= diff2;
end
/* Clock the Sinc output into an output
register
WORD_CLK
DATA
DIFF3
07077-
023
Figure 27. Clocking Sinc Output into an Output Register
WORD_CLK = output word rate
*/
always @ (posedge word_clk)
begin
DATA[15] <= diff3[23];
DATA[14] <= diff3[22];
DATA[13] <= diff3[21];
DATA[12] <= diff3[20];
DATA[11] <= diff3[19];
DATA[10] <= diff3[18];
DATA[9]
<= diff3[17];
DATA[8]
<= diff3[16];
DATA[7]
<= diff3[15];
DATA[6]
<= diff3[14];
DATA[5]
<= diff3[13];
DATA[4]
<= diff3[12];
DATA[3]
<= diff3[11];
DATA[2]
<= diff3[10];
DATA[1]
<= diff3[9];
DATA[0]
<= diff3[8];
end
endmodule
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