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STHVDAC-253M Datasheet(PDF) 2 Page - STMicroelectronics

Part # STHVDAC-253M
Description  Antenna tuning circuit
PDF  27 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STHVDAC-253M Datasheet(HTML) 2 Page - STMicroelectronics

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STHVDAC-253M
2/27
DocID025735 Rev 1
Contents
1
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Functional block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3
Theory of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1
HVDAC output voltages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2
Operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3
Device reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.4
RFFE serial interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.5
RFFE register and write command sequence . . . . . . . . . . . . . . . . . . . . . . 9
3.6
RFFE serial interface extended mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.7
RFFE serial interface brodcast capability . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.8
Power-up / down sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.9
Power supply sequencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.10
Trigger Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.10.1
Trigger mode enabled: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.10.2
Trigger mode disabled (default mode): . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.11
Settling time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.12
Operation with 1 to 3 tunable capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4
Registers table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.1
RFFE interface-register content description . . . . . . . . . . . . . . . . . . . . . . . 14
4.2
RFFE interface, command and data frame structure . . . . . . . . . . . . . . . . 15
4.3
Changing USID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.4
Serial interface specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5
Application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25



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