dac1405d650 NXP Semiconductors, dac1405d650 Datasheet - Page 25
dac1405d650
Manufacturer Part Number
dac1405d650
Description
Dual 14-bit Dac, Up To 650 Msps; 2? 4? And 8? Interpolating
Manufacturer
NXP Semiconductors
Datasheet
1.DAC1405D650.pdf
(43 pages)
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Part Number:
dac1405d650HW/C1,5
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IDT, Integrated Device Technology Inc
Quantity:
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Part Number:
dac1405d650HW/C1:5
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NXP Semiconductors
DAC1405D650_1
Product data sheet
10.6 FIR filters
The DAC1405D650 integrates three selectable Finite Impulse Response (FIR) filters
which allows the device to use 2 , 4 or 8 interpolation rates.
All three interpolation filters have a stop-band attenuation of at least 80 dBc and a
pass-band ripple of less than 0.0005 dB.
The coefficients of the interpolation filters are given in
coefficients”.
Table 33.
First interpolation filter
Lower
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)
Upper
H(55)
H(54)
H(53)
H(52)
H(51)
H(50)
H(49)
H(48)
H(47)
H(46)
H(45)
H(44)
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)
Interpolation filter coefficients
Value
0
13
0
0
72
0
0
245
0
0
650
0
0
1521
0
0
3671
0
0
20756
32768
4
34
138
408
1003
2315
6642
Rev. 01 — 4 May 2009
Dual 14-bit DAC, up to 650 Msps; 2 4 and 8 interpolating
Second interpolation filter
Lower
H(1)
H(2)
H(3)
H(4)
H(5)
H(6)
H(7)
H(8)
H(9)
H(10)
H(11)
H(12)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Upper
H(23)
H(22)
H(21)
H(20)
H(19)
H(18)
H(17)
H(16)
H(15)
H(14)
H(13)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Value
0
17
0
0
238
0
0
2530
4096
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
2
75
660
Table 33 “Interpolation filter
DAC1405D650
Third interpolation filter
Lower
H(1)
H(2)
H(3)
H(4)
H(5)
H(6)
H(7)
H(8)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Upper
H(15)
H(14)
H(13)
H(12)
H(11)
H(10)
H(9)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
© NXP B.V. 2009. All rights reserved.
Value
0
273
0
0
4964
8192
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
39
1102
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