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DAC39RFS10 Scheda tecnica(PDF) 48 Page - Texas Instruments

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
Logo TI2 - Texas Instruments

DAC39RFS10 Scheda tecnica(HTML) 48 Page - Texas Instruments

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CLK+
CLK–
DAC Output
(Sine Wave)
0
+VFS
-VFS
TS = 1/(2*FCLK)
tpd
tpd_f
Figure 7-9. DES Mode Timing Diagram
FOUT/FCLK
0
0.5
1
1.5
2
-50
-40
-30
-20
-10
0
Figure 7-10. DES Output Frequency Response
7.3.2 DAC Core
The device has two 16-bit DAC cores.
7.3.2.1 DAC Output Structure
The DAC core analog output structure is shown in Figure 7-11 for one DAC channel. There is a differential
termination resistance between the two current output pins, DACOUTx±. The current steering switch array
connects to the output pins and steers current between the output pins based on the digital code. A constant DC
current bias, IBIAS, draws current from both outputs regardless of the digital code. The IBIAS current is:
3mA x 2 CUR_2X_EN (COARSE_CUR_x + 5)/20
(1)
With a 3.6kΩ resistor from RBIAS+ to RBIAS-.
DDS39RF12, DDS39RFS12
SBASB21 – SEPTEMBER 2024
www.ti.com
48
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Product Folder Links: DDS39RF12 DDS39RFS12



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