DAC38RF86 Datasheet, PDF (47/141 Pages) Texas Instruments – Dual- or Single-Channel, Single-Ended, 14-bit, 9-GSPS, RF-Sampling DAC with JESD204B Interface and On-Chip GSM PLL

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DAC38RF86, DAC38RF87
DAC38RF97, DAC38RF96
SLASEF4 – FEBRUARY 2017
The FIR filter coefficients are shown in Table 35 The FIR filters are design with a passband BW of 0.4 x f_INPUT, a
stopband attenuation of 90 dBc and ripple of < 0.001 dB. The composite frequency response for each
interpolation factor are shown in Figure 33 to Figure 40.
20
0
-20
-40
-60
-80
-100
-120
-140
-160
0
0.075 0.15 0.225 0.3
f/Fdac
0.375
0.45
D001
20
0
-20
-40
-60
-80
-100
-120
-140
-160
0
0.075 0.15 0.225 0.3
f/Fdac
0.375
0.45
D002_8x
Figure 33. Composite Magnitude Response for 6x
Interpolation
20
0
-20
-40
-60
-80
-100
-120
-140
-160
0
0.075 0.15 0.225 0.3
f/Fdac
0.375
0.45
D003
Figure 34. Composite Magnitude Response for 8x
Interpolation
20
0
-20
-40
-60
-80
-100
-120
-140
-160
0
0.075 0.15 0.225 0.3
f/Fdac
0.375
0.45
D004
Figure 35. Composite Magnitude Response for 10x
Interpolation
Figure 36. Composite Magnitude Response for 12x
Interpolation
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