Datasheet

AD9148 Data Sheet
Rev. B | Page 32 of 72
Register Name
Addr
(Hex) Bit Name Function Default
HB2 Control 1D HB2[2:0]
Modulation mode for second stage interpolation filter
(f
HB2
= 2 × f
IN2
).
000
000 = input signal modulated by dc. Filter pass band is
from −0.1 to +0.1 of f
HB2
.
001 = input signal modulated by dc. Filter pass band is
from 0.025 to 0.225 of f
HB2
.
010 = input signal modulated by f
HB2
/4. Filter pass band is
from 0.15 to 0.35 of f
HB2
.
011 = input signal modulated by f
HB2
/4. Filter pass band is
from 0.275 to 0.475 of f
HB2
.
100 = input signal modulated by f
HB2
/2. Filter pass band is
from 0.4 to 0.6 of f
HB2
.
101 = input signal modulated by f
HB2
/2. Filter pass band is
from 0.525 to 0.725 of f
HB2
.
110 = input signal modulated by 3 f
HB2
/4. Filter pass band is
from 0.65 to 0.85 of fHB2.
111 = input signal modulated by 3 f
HB2
/4. Filter pass band is
from 0.775 to 0.975 of f
HB2
.
0
Bypass HB2
Second stage interpolation filter bypass.
0
HB3 Control 1E 7
Bypass digital gain
and phase
adjustment
1 = bypass digital gain and phase compensation. 1
3:1 HB3[2:0]
Modulation mode for third stage interpolation filter
(f
HB3
= 2 × f
IN3
).
000
000 = input signal modulated by dc. Filter pass band is
from −0.1 to +0.1 of f
HB3
.
001 = input signal modulated by dc. Filter pass band is
from 0.025 to 0.225 of f
HB3
.
010 = input signal modulated by f
HB3
/4. Filter pass band is
from 0.15 to 0.35 of f
HB3
.
011 = input signal modulated by f
HB3
/4. Filter pass band is
from 0.275 to 0.475 of f
HB3
.
100 = input signal modulated by f
HB3
/2. Filter pass band is
from 0.4 to 0.6 of f
HB3
.
101: Input signal modulated by f
HB3
/2. Filter pass band is
from 0.525 to 0.725 of f
HB3
.
110 = input signal modulated by 3 f
HB3
/4. Filter pass band is
from 0.65 to 0.85 of f
HB3
.
111 = input signal modulated by 3 f
HB3
/4. Filter pass band is
from 0.775 to 0.975 of f
HB3
.
0
Bypass HB3
Third stage interpolation filter bypass.
1
Chip ID 1F 7:0 Chip ID Chip ID readback. 07