AN31 Datasheet (Silicon Laboratories)

AN31, INDUCTOR DESIGN

www.DataSheet4U.com AN31 FOR THE INDUCTOR DESIGN 1.

Introduction Si41 X X S Y N T H E S I Z E R F A M I L Y 3.1.

Using a Discrete “Chip” Inductor If the required value for LEXT is greater than 3 nH, it is recommended that a discrete “chip” inductor be used.

This inductor should be placed as close as possible to the device pins as shown in Figure 1.

printed trace Silicon Laboratories’ family of frequency synthesizers integrates VCOs, loop filters, reference and VCO dividers, and phase detecto

AN31 Features

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* 12 ( 2 π 1.6 ⋅ 10 ) ( 4.3 ⋅ 10 ) 4. Calculate the measured external inductance, LMEAS, using Equation