EVAL-AD9832SDZ Analog Devices, EVAL-AD9832SDZ Datasheet - Page 6

• 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

UG-313
SELECT FREQUENCY AND PHASE REGISTERS
Frequency and phase registers can be selected using either
software or hardware. Figure 7 shows how to select the source
of control for the registers. To control the frequency and phase
registers using the hardware pins, use SELSRC = 0. To control
the frequency and phase registers using the software bits, use
SELSRC = 1.
LOADING FREQUENCY AND PHASE REGISTERS
The desired output frequency and output phase can be loaded
using the inputs shown in Figure 8. Either the FREQ0 register or
the FREQ1 register can be loaded with frequency data. The
frequency data is loaded in megahertz, and the equivalent
hexadecimal code is shown to the right after data is entered. After
data is loaded, the output appears on the IOUT pin. Similarly, the
PHASE0 register, the PHASE1 register, the PHASE2 register, or
the PHASE3 register can be selected, and the phase data is
loaded in degrees.
The analog output frequency from the
where FREQ is the value loaded into the selected frequency
register in decimals. This signal is phase shifted by
where PHASEx is the value contained in the selected phase
register in decimals.
f
2π/4096 × PHASEx
MCLK
/2
32
× FREQ
Figure 8. Frequency and Phase Load
Figure 7. Selection method
AD9832
is defined by
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POWER OPTIONS
When Sleep is selected, the sleep bit is set to1. When this bit
equals 1, the
disabled, and the current sources and REFOUT of the DAC are
turned off.
When Normal is selected, the sleep bit is set to 0 and the
AD9832
INITIALIZE, RESET, SYNC, CLEAR, AND SWEEP
The initialize, reset, SYNC, and clear commands are set using the
buttons shown in Figure 10. To set up a DDS sweep, click Sweep.
is powered up.
AD9832
Evaluation Board User Guide
is powered down, internal clocks are
Figure 9. Power Options
Figure 10. Commands