DAC39RFS10 datasheet(63/177 Pages) TI2

Il numero della parte	DAC39RFS10

Spiegazioni elettronici	DDS39RF12 and DDS39RFS12, 12GSPS to 24GSPS, Dual and Single Channel, Multi- Nyquist Direct Digital Synthesizer (DDS)

PDF	177 Pages

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Produttore elettronici	TI2 [Texas Instruments]

Homepage	https://www.ti.com

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complex amplitude exceeds 32767 the mixer saturates, resulting in a corrupted waveform. This is illustrated in

Figure 7-46, which shows the valid circular region in white and invalid corners in grey.

+32767

-32767

32767

Grey = mixer satura on region

white = no mixer satura on region

Figure 7-46. Mixer Saturation Region for the 16-bit Complex Input

7.3.6.2 Channel Bonder

The channel bonder sits after the DUC blocks and is used to combine the outputs of the DUCs. A block diagram

for one DAC channel is shown in Figure 7-47. The DUC outputs can be scaled by 1 (0 dB), 0.5 (-6 dB) or

0.25 (-12 dB) as set by the DUC_GAIN registers to prevent saturation when summing the signals. The signals

are summed at full precision as determined by the settings of the DAC_SRC registers, and then saturation and

rounding occurs on the combined signal. When the DUC outputs are real, up to four DUCs are available to

be combined for each DAC. When the DUC outputs are complex, only two DUCs are available per DAC. The

channel bonder can combine any combination of the real or complex DUC outputs for each DAC.

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DDS39RF12, DDS39RFS12

SBASB21 – SEPTEMBER 2024

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DAC39RFS10 Scheda tecnica(PDF) 63 Page - Texas Instruments