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DAC5687 View Datasheet(PDF) - Texas Instruments

Part NameDescriptionManufacturer
DAC5687 16-BIT, 500 MSPS 2?8 INTERPOLATING DUAL-CHANNEL DIGITAL-TO-ANALOG CONVERTER (DAC) Texas-Instruments
Texas Instruments Texas-Instruments
DAC5687 Datasheet PDF : 80 Pages
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www.ti.com
DAC5687
SLWS164E – FEBRUARY 2005 – REVISED SEPTEMBER 2006
20
0
−20
−40
−60
−80
−100
−120
−140
−160
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
f/fIN
G048
Figure 37. Magnitude Spectrum for FIR2
4
3
FIR4
2
1
Corrected
0
−1
−2
Sin(x)/x
−3
−4
0.0
0.1
0.2
0.3
0.4
0.5
fOUT/fDAC
G049
Figure 38. Magnitude Spectrum for Inverse Sinc Filter
FIR4 (Versions 1 and 2)
FIR1 and FIR3
Tap
Coeff
1, 51
8
2, 50
0
3, 49
–24
4, 48
0
5, 47
58
6, 46
0
7, 45
–120
8, 44
0
9, 43
221
10, 42
0
11, 41
–380
12, 40
0
13, 39
619
14, 38
0
15, 37
–971
16, 36
0
17, 35
1490
18, 34
0
19, 33
–2288
20, 32
0
21, 31
3649
22, 30
0
23, 29
–6628
24, 28
0
25, 27
20,750
26
32,768
Table 8. Digital Filter Taps
Tap
1, 19
2, 18
3, 17
4, 16
5, 15
6, 14
7, 13
8, 12
9, 11
10
FIR2
Coeff
9
0
–58
0
214
0
–638
0
2521
4096
FIR4 (Invsinc)
Tap
Coeff
1, 9
1
2, 8
–4
3, 7
13
4, 6
–50
5
592
Copyright © 2005–2006, Texas Instruments Incorporated
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