AD9772A-EB datasheet(8/40 Pages) AD

8 / 40 page

AD9772A

Rev. C | Page 8 of 40

DIGITAL FILTER SPECIFICATIONS

TMIN to TMAX, AVDD = 3.3 V, CLKVDD = 3.3 V, PLLVDD = 0 V, DVDD = 3.3 V, IOUTFS = 20 mA, differential transformer-coupled output,

50 Ω doubly terminated, unless otherwise noted.

Table 4.

Parameter

Min

Typ

Max

Unit

MAXIMUM INPUT DATA RATE (fDATA)

150

MSPS

DIGITAL FILTER CHARACTERISTICS

Pass-Bandwidth1: 0.005 dB

0.401

fOUT/fDATA

Pass-Bandwidth: 0.01 dB

0.404

fOUT/fDATA

Pass-Bandwidth: 0.1 dB

0.422

fOUT/fDATA

Pass-Bandwidth: −3 dB

0.479

fOUT/fDATA

LINEAR PHASE (FIR IMPLEMENTATION)

STOP BAND REJECTION

0.606 fCLOCK to 1.394 fCLOCK

Input clocks

GROUP DELAY2

IMPULSE RESPONSE DURATION

−40 dB

Input clocks

−60 dB

Input clocks

1 Excludes sin(x)/x characteristic of DAC.

2 Defined as the number of data clock cycles between impulse input and peak of output response.

FREQUENCY (DC TO

fDATA)

–140

1.0

0. 1

0. 2

0.3

0. 4

0.5

0.6

0.7

0.8

0.9

–20

–40

–60

–80

–100

–120

Figure 4. FIR Filter Frequency Response—Baseband Mode

TIME (Samples)

1.0

–0.4

0.8

0.6

0.4

0.2

–0.2

Figure 5. FIR Filter Impulse Response—Baseband Mode

Table 5. Integer Filter Coefficients for Interpolation Filter

(43-Tap Half-Band FIR Filter)

Lower

Coefficient

Upper

Coefficient

Integer

Value

H(1)

H(43)

H(2)

H(42)

H(3)

H(41)

−31

H(4)

H(40)

H(5)

H(39)

H(6)

H(38)

H(7)

H(37)

−138

H(8)

H(36)

H(9)

H(35)

248

H(10)

H(34)

H(11)

H(33)

−419

H(12)

H(32)

H(13)

H(31)

678

H(14)

H(30)

H(15)

H(29)

−1083

H(16)

H(28)

H(17)

H(27)

1776

H(18)

H(26)

H(19)

H(25)

−3282

H(20)

H(24)

H(21)

H(23)

10,364

H(22)

16,384

AD9772A-EB Datasheet(PDF) 8 Page - Analog Devices

AD9772A-EB Datasheet(HTML) 8 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

Datasheet Download

Link URL