AD9125 Analog Devices, AD9125 Datasheet - Page 25

• Manufacturer Part Number: AD9125
• Manufacturer: Analog Devices

Specifications of AD9125

• Resolution (bits): 16bit
• Dac Update Rate: 1GSPS
• Dac Settling Time: n/a
• Max Pos Supply (v): +3.47V
• Single-supply: No
• Dac Type: Current Out
• Dac Input Format: Par

Register
Name
HB1 Control
HB2 Control
HB3 Control
Chip ID
Address
(Hex)
0x1C
0x1D
0x1E
0x1F
Bits
1
0
[2:1]
0
[6:1]
0
[6:1]
0
[7:0]
Name
Select sideband
Send I data to Q data
HB1[1:0]
Bypass HB1
HB2[5:0]
Bypass HB2
HB3[5:0]
Bypass HB3
Chip ID[7:0]
Rev. 0 | Page 25 of 56
Description
0 = the modulator outputs high-side image.
1 = the modulator outputs low-side image. The image is
spectrally inverted compared with the input data.
1 = ignores Q data from the interface and disables the
clocks to the Q datapath. Sends I data to both the I and
Q DACs.
00 = input signal is not modulated; filter pass band is
from −0.4 to +0.4 of f
01 = input signal is not modulated; filter pass band is
from 0.1 to 0.9 of f
10 = input signal is modulated by f
from 0.6 to 1.4 of f
11 = input signal is modulated by f
from 1.1 to 1.9 of f
1 = bypasses first-stage interpolation filter.
Modulation mode for I Side Half-Band Filter 2.
000000 = input signal is not modulated; filter pass band
is from −0.25 to +0.25 of f
001001 = input signal is not modulated; filter pass band
is from 0.0 to 0.5 of f
010010 = input signal is not modulated; filter pass band
is from 0.25 to 0.75 of f
011011 = input signal is not modulated; filter pass band
is from 0.5 to 1.0 of f
100100 = input signal is modulated by f
band is from 0.75 to 1.25 of f
101101 = input signal is modulated by f
band is from 1.0 to 1.5 of f
110110 = input signal is modulated by f
band is from 1.25 to 1.75 of f
111111 = input signal is modulated by f
band is from 1.5 to 2.0 of f
1 = bypasses second stage interpolation filter.
Modulation mode for I Side Half-Band Filter 3.
000000 = input signal is not modulated; filter pass band
is from −0.2 to +0.2 of f
001001 = input signal is not modulated; filter pass band
is from 0.05 to 0.45 of f
010010 = input signal is not modulated; filter pass band
is from 0.3 to 0.7 of f
011011 = input signal is not modulated; filter pass band
is from 0.55 to 0.95 of f
100100 = input signal is modulated by f
band is from 0.8 to 1.2 of f
101101 = input signal is modulated by f
band is from 1.05 to 1.45 of f
110110 = input signal is modulated by f
band is from 1.3 to 1.7 of f
111111 = input signal is modulated by f
band is from 1.55 to 1.95 of f
1 = bypasses third-stage interpolation filter.
This register identifies the device as an AD9125.
IN1
IN1
IN1
IN2
IN2
IN3
.
.
.
IN1
.
.
.
IN2
IN3
IN3
IN3
.
.
.
.
.
IN2
IN2
IN2
IN3
IN3
.
.
.
.
.
IN2
IN2
IN3
IN3
.
.
.
.
IN1
IN1
; filter pass band is
; filter pass band is
IN2
IN2
IN2
IN2
IN3
IN3
IN3
IN3
; filter pass
; filter pass
; filter pass
; filter pass
; filter pass
; filter pass
; filter pass
; filter pass
AD9125
Default
0
0
0
0
0
0
0
0
8