AN400 Datasheet, PDF (1/20 Pages) Extech Instruments Corporation. – Cup Thermo-Anemometer

AN400
Si474X ANTENNA, SCHEMATIC, LAYOUT, AND DESIGN GUIDELINES
1. Introduction
This document provides general Si474x design guidelines and AM/LW/SW/FM/WB antenna selections, which
include schematic, BOM, layout, and design checklist.
Users should follow the Si474x design guidelines presented in Section “2. Si474x 4x4 mm QFN Schematic and
Layout” and proceed to the appropriate antenna selections according to the application and device used presented
in Sections 3 through 6.
Table 1. Supported Devices and Antennas
P/N
General Description
Function
FM
WB AM/LW/SW
Antenna Antenna Antenna
FM
AM SW/LW WB
Receiver Receiver Receiver Receiver
Whip
Whip
Whip
Si4740
High-Performance
AM/FM Receiver



AM/LW
Si4741
High-Performance AM/FM
Receiver with RDS



AM/LW
High-Performance
Si4742 AM/LW/SW/FM/WB
Receiver







High-Performance
Si4743 AM/LW/SW/FM/WB
Receiver with RDS







Si4744
High-Performance
AM/LW/SW/FM Receiver





High-Performance
Si4745 AM/LW/SW/FM Receiver





with RDS
Si4749
High-Performance RDS-
only Receiver


Rev. 0.5 10/08
Copyright © 2008 by Silicon Laboratories
AN400