參數(shù)資料
型號(hào): AD9779A-DPG2-EBZ
廠商: Analog Devices Inc
文件頁(yè)數(shù): 27/56頁(yè)
文件大?。?/td> 0K
描述: BOARD EVALUATION FOR AD9779A
設(shè)計(jì)資源: Interfacing ADL5370 to AD9779A Dual-Channel, 1 GSPS High Speed DAC (CN0016)
Interfacing ADL5371 to AD9779A Dual-Channel, 1 GSPS High Speed DAC (CN0017)
Interfacing ADL5372 to AD9779A Dual-Channel, 1 GSPS High Speed DAC (CN0018)
Interfacing ADL5373 to AD9779A Dual-Channel, 1 GSPS High Speed DAC (CN0019)
Interfacing ADL5374 to AD9779A Dual-Channel, 1 GSPS High Speed DAC (CN0020)
Interfacing ADL5375 to AD9779A Dual-Channel, 1 GSPS High Speed DAC (CN0021)
AD9788-79A Eval Brd Schematic
AD9779A-DPG2-EBZ BOM
AD9779A-DPG2-EBZ Gerber Files
標(biāo)準(zhǔn)包裝: 1
系列: *
DAC 的數(shù)量: 2
位數(shù): 16
采樣率(每秒): 1G
數(shù)據(jù)接口: 串行
DAC 型: 電流
工作溫度: -40°C ~ 85°C
已供物品: *
已用 IC / 零件: AD9779A
AD9776A/AD9778A/AD9779A
Rev. B | Page 33 of 56
INTERPOLATION FILTER ARCHITECTURE
The AD9776A/AD9778A/AD9779A can provide up to 8× inter-
polation, or the interpolation filters can be entirely disabled. It
is important to note that the input signal should be backed off
by approximately 0.01 dB from full scale to avoid overflowing
the interpolation filters. The coefficients of the low-pass filters
and the inverse sinc filter are given in Table 15, Table 16, Table 17,
and Table 18. Spectral plots for the filter responses are shown in
Table 15. Low-Pass Filter 1
Lower Coefficient
Upper Coefficient
Integer Value
H(1)
H(55)
4
H(2)
H(54)
0
H(3)
H(53)
+13
H(4)
H(52)
0
H(5)
H(51)
34
H(6)
H(50)
0
H(7)
H(49)
+72
H(8)
H(48)
0
H(9)
H(47)
138
H(10)
H(46)
0
H(11)
H(45)
+245
H(12)
H(44)
0
H(13)
H(43)
408
H(14)
H(42)
0
H(15)
H(41)
+650
H(16)
H(40)
0
H(17)
H(39)
1003
H(18)
H(38)
0
H(19)
H(37)
+1521
H(20)
H(36)
0
H(21)
H(35)
2315
H(22)
H(34)
0
H(23)
H(33)
+3671
H(24)
H(32)
0
H(25)
H(31)
6642
H(26)
H(30)
0
H(27)
H(29)
+20,755
H(28)
+32,768
Table 16. Low-Pass Filter 2
Lower Coefficient
Upper Coefficient
Integer Value
H(1)
H(23)
2
H(2)
H(22)
0
H(3)
H(21)
+17
H(4)
H(20)
0
H(5)
H(19)
75
H(6)
H(18)
0
H(7)
H(17)
+238
H(8)
H(16)
0
H(9)
H(15)
660
H(10)
H(14)
0
H(11)
H(13)
+2530
H(12)
+4096
Table 17. Low-Pass Filter 3
Lower Coefficient
Upper Coefficient
Integer Value
H(1)
H(15)
39
H(2)
H(14)
0
H(3)
H(13)
+273
H(4)
H(12)
0
H(5)
H(11)
1102
H(6)
H(10)
0
H(7)
H(9)
+4964
H(8)
+8192
Table 18. Inverse Sinc Filter
Lower Coefficient
Upper Coefficient
Integer Value
H(1)
H(9)
+2
H(2)
H(8)
4
H(3)
H(7)
+10
H(4)
H(6)
35
H(5)
+401
10
–100
–4
4
fOUT (× Input Data Rate)
AT
T
E
N
UAT
IO
N
(
d
B
)
–3
–2
–1
0123
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
06
45
2-
0
54
Figure 57. 2× Interpolation, Low-Pass Response to ±4× Input Data Rate
(Dotted Lines Indicate 1 dB Roll-Off)
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