SX1211 View Datasheet(PDF) - Semtech Corporation

Part Name

Description

Manufacturer

SX1211

Ultra-Low Power Integrated UHF Transceiver

Semtech Corporation 

ADVANCED COMMUNICATIONS & SENSING

Frf , ook, tx = 9 Flo − Fdev

8

Frf , ook,tx = 9 Fxtal [75(P + 1) + S )] − Fdev

8 R +1

SX1211

Consequently, in receive mode, due to the low intermediate frequency (Low-IF) architecture of the SX1211 the

frequency should be configured so as to ensure the correct low-IF receiver baseband center frequency, IF2.

Frf , ook, rx = 9 Flo − IF 2

8

Frf , ook, rx = 9 Fxtal [75(P + 1) + S )]− IF 2

8 R +1

Note that from Section 3.4.4, it is recommended that IF2 be set to 100 kHz.

Rev 7 – Sept 2nd, 2008

Page 17 of 92

www.semtech.com

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