AD9125 Analog Devices, AD9125 Datasheet - Page 27

• 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
I Aux DAC Control
Q DAC FS Adjust
Q DAC Control
Aux DAC Q Data
Q Aux DAC Control
Die Temp Range
Die Temp LSB
Die Temp MSB
Control
Address
(Hex)
0x43
0x44
0x45
0x46
0x47
0x48
0x49
0x4A
Bits
7
6
5
[1:0]
[7:0]
7
[1:0]
[7:0]
7
6
5
[1:0]
[6:4]
[3:1]
0
[7:0]
[7:0]
Name
I aux DAC sign
I aux DAC current
direction
I aux DAC sleep
I Aux DAC[9:8]
Q DAC FS adjust[7:0]
Q DAC sleep
Q DAC FS adjust[9:8]
Q aux DAC[7:0]
Q aux DAC sign
Q aux DAC current
direction
Q aux DAC sleep
Q aux DAC[9:8]
FS current[2:0]
Reference current[2:0]
Capacitor value
Die temp[7:0]
Die temp[15:8]
Rev. 0 | Page 27 of 56
Description
0 = the auxiliary DAC I sign is positive, and the current is
directed to the IOUT1P pin (Pin 67).
1 = the auxiliary DAC I sign is negative, and the current
is directed to the IOUT1N pin (Pin 66).
0 = the auxiliary DAC I sources current.
1 = the auxiliary DAC I sinks current.
I channel auxiliary DAC sleep.
See Register 0x42.
Q DAC FS adjust[9:0] sets the full-scale current of the
I DAC. The full-scale current can be adjusted from 8.64 mA
to 31.6 mA in step sizes of approximately 22.5 μA.
0x000 = 8.64 mA.
…
0x200 = 20.14 mA.
…
0x3FF = 31.66 mA.
1 = puts the Q-channel DAC into sleep mode (fast wake-
up mode).
See Register 0x44.
Q aux DAC[9:0] sets the magnitude of the aux DAC current.
The range is 0 mA to 2 mA, and the step size is 2 μA.
0x000 = 0.000 mA.
0x001 = 0.002 mA.
…
0x3FF = 2.046 mA.
0 = the auxiliary DAC Q sign is positive, and the current
is directed to the IOUT2P pin (Pin 58).
1 = the auxiliary DAC Q sign is negative, and the current
is directed to the IOUT2N pin (Pin 59).
0 = the auxiliary DAC Q sources current.
1 = the auxiliary DAC Q sinks current.
Q-channel auxiliary DAC sleep
See Register 0x46.
Auxiliary ADC full-scale current.
000 = lowest current.
…
111 = highest current.
Auxiliary ADC reference current.
000 = lowest current.
111 = highest current.
Auxiliary ADC internal capacitor value.
0 = 5 pF.
1 = 10 pF.
Die Temp[15:0] indicates the approximate die
temperature.
0xADCC = −39.9°C.
0xC422 = 25.1°C.
…
0xD8A8 = 84.8°C (see the Temperature Sensor section for
details).
See Register 0x49.
AD9125
Default
0
0
0
0
F9
0
1
0
0
0
0
0
0
1
0
R
R