AD9260 Analog Devices, AD9260 Datasheet - Page 8
AD9260
Manufacturer Part Number
AD9260
Description
16-Bit High Speed Oversampled A/D Converter
Manufacturer
Analog Devices
Datasheet
1.AD9260.pdf
(44 pages)
Specifications of AD9260
Resolution (bits)
16bit
# Chan
1
Sample Rate
2.5MSPS
Interface
Par
Analog Input Type
Diff-Uni
Ain Range
4 V p-p
Adc Architecture
Sigma-Delta
Pkg Type
QFP
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AD9260
Table 5. Integer Filter Coefficients for First Stage
Decimation Filter (23-Tap Half-Band FIR Filter)
Lower Coefficient
H(1)
H(2)
H(3)
H(4)
H(5)
H(6)
H(7)
H(8)
H(9)
H(10)
H(11)
H(12)
Table 6. Integer Filter Coefficients for Second Stage
Decimation Filter (43-Tap Half-Band FIR Filter)
Lower Coefficient
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)
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 between 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 determined) with a “zero stuffed” version of the third
stage filter taps (i.e., insert three zeros between samples).
Upper Coefficient
H(23)
H(22)
H(21)
H(20)
H(19)
H(18)
H(17)
H(16)
H(15)
H(14)
H(13)
Upper Coefficient
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)
Integer Value
–1
0
13
0
–66
0
224
0
–642
0
2496
4048
Integer Value
3
0
–12
0
35
0
–83
0
172
0
–324
0
572
0
–976
0
1680
0
–3204
0
10274
16274
Rev. C | Page 8 of 44
Table 7. Integer Filter Coefficients for Third Stage
Decimation Filter (107-Tap Half-Band FIR Filter)
Lower Coefficient
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)
Upper Coefficient
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)
Integer Value
–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