Johanson Technology Matched Balun Filters for CC110x & CC111x

2022-09-19
●Introduction
▲With the Johanson Technology (JTI) matched balun filter component; the component count is significantly reduced whilst still obtaining the high radio performance desired.
▲This document describes the JTI matched chip balun filters that have been specifically designed for the CC110x and CC111x family of ICs operating in the 433, 868 and 915 MHz ISM bands.
▲The existing matched filter balun component from JTI required a single-pole external LC filter and a DC blocking capacitor; part number: 0896BM15A0001 [4]. This part is targeted towards a design that has to be compliant at 868 MHz and 915 MHz with the external LC filter and DC blocking cap (three external 0402 components required).
▲With the new balun component family, only one component is required to achieve compliancy at 433 MHz [6.2] or 868 MHz [6.3] or 915 MHz [6.4]. i.e. no additional external components are required.
▲It is important to note that the new matched baluns are optimized for a single ISM frequency band.
▲The three balun-filter parts are available [4]: 433 MHz [6.2] (part number: 0433BM15A0001), 868 MHz [6.3] (part number: 0868BM15C0001) and 915 MHz [6.4] (part number: 0915BM15A0001). All these parts share a common footprint.
The size for the matched balun filter component is only 2.0 mm x 1.25 mm (EIA 0805, Metric 2012) therefore it is recommended for compact designs.
▲All measurement results presented in this document are based on measurements performed on the CC1101 JTI EM Rev 1.0 Reference Design [6], shown in Figure 1. If the new matched filter balun is used on this board then the external components are not required.
▲The comparison performance of the JTI Reference Design and the Discrete Reference Designs will be discussed in this document.

Johanson Technology

CC110xCC111xCC1100CC1101CC1110CC1111CC1150CC111x familyCC110x family0896BM15A00010433BM15A00010868BM15C00010915BM15A0001CC11xLL-07C5N6SV4500R07S1R8BV4CC113XCC115XCC110LCC113LCC115LCC430

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Part#

Matched Balun Filtersbalun filterssingle-pole external LC filterDC blocking capacitorchipsinductorcapacitor

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Application note & Design Guide

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Please see the document for details

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0805;2012

English Chinese Chinese and English Japanese

2011.10.12

Revision SWRA250A

DN025

609 KB

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