AD9142ABCPZRL datasheet(34/73 Pages) AD

34 / 73 page

Data Sheet

AD9142A

4× Interpolation Mode

Figure 43 and Figure 44 show the pass-band and all-band filter

responses for 4× mode.

Figure 43. Pass-Band Detail of 4× Mode

Figure 44. All-Band Response of 4× Mode

8× Interpolation Mode

Figure 45 and Figure 46 show the pass-band and all-band filter

responses for 8× mode. The maximum DAC update rate is 1.6 GHz,

and the maximum input data rate that is supported in this mode is

200 MHz (1.6 GHz/8).

Figure 45. Pass-Band Detail of 8× Mode

Figure 46. All-Band Response of 8× Mode

Table 18. Half-Band Filter 1 Coefficient

Lower Coefficient

Upper Coefficient

Integer Value

H(1)

H(55)

−4

H(2)

H(54)

H(3)

H(53)

+13

H(4)

H(52)

H(5)

H(51)

−32

H(6)

H(50)

H(7)

H(49)

+69

H(8)

H(48)

H(9)

H(47)

−134

H(10)

H(46)

H(11)

H(45)

+239

H(12)

H(44)

H(13)

H(43)

−401

H(14)

H(42)

H(15)

H(41)

+642

H(16)

H(40)

H(17)

H(39)

−994

H(18)

H(38)

H(19)

H(37)

+1512

H(20)

H(36)

H(21)

H(35)

−2307

H(22)

H(34)

H(23)

H(33)

+3665

H(24)

H(32)

H(25)

H(31)

−6638

H(26)

H(30)

H(27)

H(29)

+20,754

H(28)

+32,768

0.02

–0.10

–0.08

–0.06

–0.04

–0.02

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

FREQUENCY (Hz)

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

0.4

0.2

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

FREQUENCY (Hz)

0.02

–0.10

–0.08

–0.06

–0.04

–0.02

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

FREQUENCY (Hz)

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

0.4

0.2

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

FREQUENCY (Hz)

Rev. A | Page 33 of 72

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