EVAL-AD9832SDZ Analog Devices, EVAL-AD9832SDZ Datasheet - Page 7

• Manufacturer Part Number: EVAL-AD9832SDZ
• Description: Data Conversion IC Development Tools EVALUATION BOARD I.C.
• Manufacturer: Analog Devices
• Type: DACr
• Series: AD9832r

Specifications of EVAL-AD9832SDZ

• Rohs: yes
• Product: Evaluation Boards
• Tool Is For Evaluation Of: AD9832
• Interface Type: USB
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Factory Pack Quantity: 1
• For Use With: EVAL-SDP-CB1Z

Evaluation Board User Guide
Initialise sets the frequency registers and the phase registers to
the values chosen by users. It also sets SELSRC to 0. It is used in
three different cases: when starting the program, after using
reset and after switching from sleep to normal.
When the reset bit = 1, the phase accumulator is set to zero phase,
which corresponds to an analog output of midscale. Setting
reset to 1 sets the FSELECT, PSEL0, and PSEL1 pins to 0.
Selection of the frequency/phase registers using the FSELECT
and PSELx pins is synchronized with the MCLK rising edge
when SYNC = 1. When SYNC = 0, the loading of the data and
the sampling of FSELECT and PSELx occurs asynchronously.
When CLR = 1, SYNC and SELSRC are set to zero so that the
pins are the default source. CLR resets to zero automatically.
The sweep function allows users to load a start frequency, stop
frequency, increment size, number of loops, and delay between
each frequency increment. These commands are then loaded to
the part automatically from the EVAL-SDP-CB1Z board. When
using the sweep function, SELSRC must be set to 1.
Figure 11. Sweep Functionality
Rev. 0 | Page 7 of 12
EXAMPLE OF OPERATION
An example of configuring the AD9832 to output 1 MHz follows:
1.
2.
3.
4.
5.
6.
The output should appear on the IOUT output on the
evaluation board.
For the FREQ0 register,
1.
2.
For the FREQ1 register,
1.
2.
Plug the
AD9832SDZ
Start up the software located at Start/All Programs/
Analog Devices/AD9832/AD9832 Eval Board. Users
should see the SDP board communicating with the PC.
Define MCLK; the default is an on-board 25 MHz
oscillator.
Ensure that all links are in the correct locations (see Table 1).
Select the FREQ1 register.
Load a 1 MHz excitation frequency and press the
ENTER key.
Select the FREQ0 register, and load the FREQ0 register
with 2 MHz.
Press the ENTER key.
Select the FREQ1 register to load the 1 MHz associated
with this register.
Press the ENTER key.
2
CH1
Figure 12. 1 MHz Output Signal on the IOUT Test Point
CH1 FREQUENCY: 1.000MHz
CH1 PEAK TO PEAK: 572mV
100mV
EVAL-SDP-CB1Z
board and connect to the USB port.
CH2 100mV
M 200ns
board into the
T
0.00000s
A CH1
EVAL-
216mV
UG-313