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AN4440 Scheda tecnica(PDF) 10 Page - STMicroelectronics

Il numero della parte AN4440
Spiegazioni elettronici  RFFE HVDAC control
PDF  36 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4440 Scheda tecnica(HTML) 10 Page - STMicroelectronics

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RFFE normal modes
AN4440
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DocID025913 Rev 1
Test with AUT (automatic mode)
HVDAC-253M does not need any configuration frame as it starts at power-up with boost ON
at 27 V and DAC A, B and C active at 0 V. Write 2.8 (for 2.8 V) in the DAC B setting textbox.
and press Send.
Read the command sent for DAC B which is in the rich text box: 0x0 0x1D 0x4 0x38
(The last bit in the schematic is the bus park => protocol bits are not indicated by the
software).
Measure HVDAC B output: should be 2.8 V.
Note:
Change the DAC B value for the next exercise
Figure 7. Test with AUT (automatic mode)



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