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DAC39RFS10 Scheda tecnica(PDF) 44 Page - Texas Instruments |
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DAC39RFS10 Scheda tecnica(HTML) 44 Page - Texas Instruments |
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44 / 177 page  7.3 Feature Description This section describes the analog and digital features of the device. 7.3.1 DAC Output Modes The DDS39RF12 and 'RFS12 consists of a multi-Nyquist DAC core capable of direct transmission through the third Nyquist zone. The high output frequency capabilities are enabled by specific output switching waveforms that alter the output waveform, changing the frequency response of the DAC to enhance the DAC images in alternate Nyquist zones. The desired switching waveforms can be selected through the serial interface. A list of modes along with their properties and uses are provided in Table 7-1. The responses shown in this section do not consider the effect of the DAC analog bandwidth or external passive or active signal chain components. Table 7-1. Summary of Multi-Nyquist Output Modes and Uses DAC OUTPUT MODE PASSES DC Optimal Frequency Range PEAK OUTPUT POWER(1) Other Non-return-to-zero (NRZ) Yes 0 - FCLK/2 0 dBFS Return-to-zero (RTZ) Yes 0 - FCLK –6 dBFS Radio Frequency (RF) No FCLK/2 - FCLK –2.8 dBFS Dual Edge Sampling (DES) Yes 0 - FCLK 0 dBFS Duty cycle image at FCLK - FOUT (1) Peak power here does not include the effect of analog output bandwidth due to parasitic passive components or external components DDS39RF12, DDS39RFS12 SBASB21 – SEPTEMBER 2024 www.ti.com 44 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated Product Folder Links: DDS39RF12 DDS39RFS12 |
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