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Johanson Technology Impedance Matched Balun Filter Integrated Passive for
Nordic’s nRF24L01 and nRF24L01+ Chipsets
November 2009
(Last update: 06/13/2012)
1. Introduction
The nRF24L01/nRF24L01+ from Nordic Semiconductor is a 2.45GHz one chip, ultra low power
transceiver.
Johanson Technology’s, 2450BM14A0002 LPF-Balun was specifically designed for use with the
nRF24L01/nRF24L01+ chipsets. This matched balun greatly simplifies the RF front-end by
considerably reducing component count, system variability, implementation size area, and PCB
sensitivity.
Figure 1. Component picture.
The 2450BM14A0002 is an SMD six-pin LTCC device with a small foot print of only 1.6 mm x
0.8 mm (EIA 0603).
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2. Description of the Reference Design
Johanson Technology has developed a solution with a chip Balun-Harmonic filter integrated
passive component that is especially matched for the nRF24L01/nRF24L01+ ICs, the
2450BM15A0002, shown in Figure 1.
Figure 2. Integrated Reference Design
The rightmost is the JTI matched balun 2450BM14A0002.
Please refer to Appendix A for the datasheet of the balun filter component. For more updated
information from the Johanson Technology web site at:
http://johansontechnology.com/nordic
p/n: 2450BM14A0001