AD9958/PCBZ Analog Devices Inc, AD9958/PCBZ Datasheet - Page 19

• Manufacturer Part Number: AD9958/PCBZ
• Description: BOARD EVALUATION FOR AD9958
• Manufacturer: Analog Devices Inc
• Series: AgileRF™r

Specifications of AD9958/PCBZ

• Design Resources: Low Jitter Sampling Clock Generator for High Performance ADCs Using AD9958/9858 and AD9515 (CN0109) Phase Coherent FSK Modulator (CN0186)
• Main Purpose: Timing, Direct Digital Synthesis (DDS)
• Embedded: No
• Utilized Ic / Part: AD9958
• Primary Attributes: 10-Bit DAC, 32-Bit Tuning Word Width
• Secondary Attributes: 500MHz, Graphical User Interface, 2-Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

In the Channel Output Config window (Figure 39), Channel 0 has a frequency output of 30 MHz (Frequency 00 box) and Channel 1 an
output frequency of 40 MHz. Because the RU/RD operation is enabled, the Enable ASF and Enable Auto ASF check boxes are selected.
The amplitude scalar factor (ASF) is set to 1 (full scale). Therefore, the output signal is 0 MHz until the correct profile pin is selected to
ramp the frequency up to full scale. When this setup file is loaded, Profile Pin P2 and Profile Pin P3 are pressed as shown in Profile and
RURD Pin Control. P2 controls Channel 0 and P3 controls Channel 1. If a profile pin is deselected, the associated channel’s output
returns to 0 MHz. To return to full scale, re-press the profile pin that triggers the RU/RD operation.
Modulation Mode
Open the Modulation Mode folder to access the modulation mode of operation example setup files. Once this folder is opened you are
presented with the window shown in Figure 40.
For frequency modulation (FSK), open the Frequency folder; for phase modulation (PSK), open the Phase folder; and for amplitude
modulation (ASK), open the Amplitude folder. In these folders, all setup files are indexed by their level (2-, 4-, 8-, or 16-level). This
section discusses the CH0_@3 MHz increments.stp file found in the Frequency folder under the 16-level folder.
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Figure 39.
Figure 40.
AD9958/PCB