參數(shù)資料
型號: AD9260AS
廠商: ANALOG DEVICES INC
元件分類: ADC
英文描述: High-Speed Oversampling CMOS ADC with 16-Bit Resolution at a 2.5 MHz Output Word Rate
中文描述: 1-CH 16-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP44
封裝: MS-022AB, MQFP-44
文件頁數(shù): 7/36頁
文件大?。?/td> 572K
代理商: AD9260AS
AD9260
–7–
REV. B
Table I. Integer Filter Coefficients for First Stage Decimation
Filter (23-Tap Halfband FIR Filter)
Lower
Coefficient
Upper
Coefficient
Integer
Value
H(1)
H(2)
H(3)
H(4)
H(5)
H(6)
H(7)
H(8)
H(9)
H(10)
H(11)
H(12)
H(23)
H(22)
H(21)
H(20)
H(19)
H(18)
H(17)
H(16)
H(15)
H(14)
H(13)
1
0
13
0
66
0
224
0
642
0
2496
4048
Table II. Integer Filter Coefficients for Second Stage Decima-
tion Filter (43-Tap Halfband FIR Filter)
Lower
Coefficient
Upper
Coefficient
Integer
Value
H(1)
H(2)
H(3)
H(4)
H(5)
H(6)
H(7)
H(8)
H(9)
H(10)
H(11)
H(12)
H(13)
H(14)
H(15)
H(16)
H(17)
H(18)
H(19)
H(20)
H(21)
H(22)
H(43)
H(42)
H(41)
H(40)
H(39)
H(38)
H(37)
H(36)
H(35)
H(34)
H(33)
H(32)
H(31)
H(30)
H(29)
H(28)
H(27)
H(26)
H(25)
H(24)
H(23)
3
0
12
0
35
0
83
0
172
0
324
0
572
0
976
0
1680
0
3204
0
10274
16274
NOTE: The composite filter undecimated coefficients (i.e.,
impulse response) in the 4
×
decimation mode can be determined
by convolving the first stage filter taps with a
zero stuffed
version of the second stage filter taps (i.e., insert one zero be-
tween samples). Similarly, the composite filter coefficients in the
8
×
decimation mode can be determined by convolving the taps
of the composite 4
×
decimation mode (as previously deter-
mined) with a
zero stuffed
version of the third stage filter taps
(i.e., insert three zeros between samples).
Table III. Integer Filter Coefficients for Third Stage Decima-
tion Filter (107-Tap Halfband FIR Filter)
Lower
Coefficient
Upper
Coefficient
Integer
Value
H(1)
H(2)
H(3)
H(4)
H(5)
H(6)
H(7)
H(8)
H(9)
H(10)
H(11)
H(12)
H(13)
H(14)
H(15)
H(16)
H(17)
H(18)
H(19)
H(20)
H(21)
H(22)
H(23)
H(24)
H(25)
H(26)
H(27)
H(28)
H(29)
H(30)
H(31)
H(32)
H(33)
H(34)
H(35)
H(36)
H(37)
H(38)
H(39)
H(40)
H(41)
H(42)
H(43)
H(44)
H(45)
H(46)
H(47)
H(48)
H(49)
H(50)
H(51)
H(52)
H(53)
H(54)
H(107)
H(106)
H(105)
H(104)
H(103)
H(102)
H(101)
H(100)
H(99)
H(98)
H(97)
H(96)
H(95)
H(94)
H(93)
H(92)
H(91)
H(90)
H(89)
H(88)
H(87)
H(86)
H(85)
H(84)
H(83)
H(82)
H(81)
H(80)
H(79)
H(78)
H(77)
H(76)
H(75)
H(74)
H(73)
H(72)
H(71)
H(70)
H(69)
H(68)
H(67)
H(66)
H(65)
H(64)
H(63)
H(62)
H(61)
H(60)
H(59)
H(58)
H(57)
H(56)
H(55)
1
0
2
0
2
0
3
0
3
0
1
0
3
0
12
0
27
0
50
0
85
0
135
0
204
0
297
0
420
0
579
0
784
0
1044
0
1376
0
1797
0
2344
0
3072
0
4089
0
5624
0
8280
0
14268
0
43520
68508
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