AD9148BPCZ datasheet(31/73 Pages) AD

31 / 73 page

Preliminary Technical Data

AD9148

Rev. PrA | Page 31 of 73

Addr

(Hex)

Bit

Name

Function

Default

HB2 Control

HB2[2:0]

Modulation mode for second stage interpolation filter

(fHB2 = 2 × fIN2).

000

000 = input signal modulated by dc. Filter pass band is

from −0.1 to +0.1 of fHB2.

001 = input signal modulated by dc. Filter pass band is

from 0.025 to 0.225 of fHB2.

010 = input signal modulated by fHB2/4. Filter pass band is

from 0.15 to 0.35 of fHB2.

011 = input signal modulated by fHB2/4. Filter pass band is

from 0.275 to 0.475 of fHB2.

100 = input signal modulated by fHB2/2. Filter pass band is

from 0.4 to 0.6 of fHB2.

101 = input signal modulated by fHB2/2. Filter pass band is

from 0.525 to 0.725 of fHB2.

110 = input signal modulated by 3fHB2/4. Filter pass band is

from 0.65 to 0.85 of fHB2.

111 = input signal modulated by 3fHB2/4. Filter pass band is

from 0.775 to 0.975 of fHB2.

Bypass HB2

Second stage interpolation filter bypass.

HB3 Control

Bypass Phase Adj

1 = bypass phase compensation.

3:1

HB3[2:0]

Modulation mode for third stage interpolation filter

(fHB3 = 2 × fIN3).

000

000 = input signal modulated by dc. Filter pass band is

from −0.1 to +0.1 of fHB3.

001 = input signal modulated by dc. Filter pass band is

from 0.025 to 0.225 of fHB3.

010 = input signal modulated by fHB3/4. Filter pass band is

from 0.15 to 0.35 of fHB3.

011 = input signal modulated by fHB3/4. Filter pass band is

from 0.275 to 0.475 of fHB3.

100 = input signal modulated by fHB3/2. Filter pass band is

from 0.4 to 0.6 of fHB3.

101: Input signal modulated by fHB3/2. Filter pass band is

from 0.525 to 0.725 of fHB3.

110 = input signal modulated by 3fHB3/4. Filter pass band is

from 0.65 to 0.85 of fHB3.

111 = input signal modulated by 3F HB3/4. Filter pass band is

from 0.775 to 0.975 of fHB3.

Bypass HB3

Third stage interpolation filter bypass.

Chip ID

7:0

Chip ID

Chip ID Readback

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