STW81101ATR datasheet(28/42 Pages) STMICROELECTRONICS

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STW81101ATR Arkusz danych(PDF) 28 Page - STMicroelectronics

Numer części	STW81101ATR

Szczegółowy opis	Multi-band RF frequency synthesizer with integrated VCOs

PDF	42 Pages

Scroll/Zoom	100%

Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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28 / 42 page

I2C bus interface

STW81101

28/42

Pump, Prescaler Modulus) and all the bits of the "CALIBRATION" Register (05H)

set to '0'

Program the "CALIBRATION" Register using a single-byte write sequence (sub-

address 05H) with the SERCAL bit set to '1'

The maximum allowed PFD frequency (fPFD) to perform the calibration process is 1 MHz; if

the desired fPFD is higher than 1MHz the following steps are needed:

–

Perform all the steps of the calibration procedure programming the desired VCO

frequency with a proper setting of R, B and A counter so that fPFD is ≤ 1MHz.

–

Program the device with the proper setting for the desired VCO and PFD

frequencies according to the above step a) only.

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