RFD21733 Datasheet, PDF (7/76 Pages) List of Unclassifed Manufacturers – Compliance Approved 2.4 GHz RF Transceiver Modules with Built-In RFDP8 Application Protocol

© Copyright, RF Digital
7/10/2011 1:40 AM
Patents Pending
RoHS CE • ESTI
RFD21733 • FCC • IC
RFD21743 • FCC
Approved & Certified
13715 Alton Pkwy • Irvine • CA • 92618
Tel: [phone] • www.RFdigital.com
Fast Answers: [e-mail]
RFDP8
RF Module
RFD21733
RFD21735
RFD21737
RFD21738
RFD21739
RFDP8
RFDANT
RFD21742
RFD21743
RFD21772
RFD21773
KEYFOBs
Choosing between RFD21733 Module or RFD21743 RFDANT
The RFD21733 RF Module and the RFD21742 / RFD21743 RFDANTs have the same electrical interface and are both
embedded with the Patent Pending RFDP8 interference immunity protocol. They are pin for pin electrically
compatible. Except for the different form factor, cost and range, they are basically the same. The RFDANTs have
an 8 inch long 1.5mm, 11pin connector termination for its interface to your electronics, were the RFD21733 module
has a 19 pin SMT interface and solders to your PCB. Only 11 out of the 19 pins are used for electrical interface.
The RFD21733 is only 15mm square and has a range of about 500 feet. The RFD21733 module is about one quarter
the cost of the RFDANT. So why would you use the RFDANT? There are many reasons: The RFDANT is
hermetically, fully potted and over-molded, has an industrial rugged enclosure and the full radio system and
processing is all built into the Antenna structure itself. The RFDANTs mounting does not require a PCB at all,
simply just drill a hole into your enclosure and feed the 8 inch cable through and apply a nut and your RFDANT is
mounted and ready for use. The RFDANT does not have impacts from proximity effects from near-by metal
enclosures and objects. The RFDANT has a perfect antenna pattern which provides extraordinary, consistent
repeatable performance.
The RFDANT’s Revolutionary Patent Pending design enables it to reach distances of 2,000 feet, while still being an
Ultra Low Power device. This huge range is reached without any power amplifiers at all, it’s unique design is
responsible for it reaching these great distances without any extra battery drain or extra power. The RFDANT
makes it easy for you to satisfy GREEN directives due to its unique design and ultra high performance.
The RFDANT fits in the palm of your hand and looks like an Antenna, but of course it is much more since it is the
whole radio and processing system in one unit. There are no RF cables at all, simply connect +V, GND, and a few
logic signal wires based on your application and you are done. There is no need for PCB layout either. You can
directly connect to the 11 pin, 8 inch cable extending out of the bottom of the RFDANT.
The RFD21733 is an ideal partner with the RFD21743 or RFD21742 RFDANTs. They can communicate with each
other using the RFDP8 protocol with switch logic IO or Serial UART. You can mix and match them as well, with
using RFD21733 on one end of your system and an RFDANT on the other.
The RFD21733 is a perfect fit when you need ultra small size and ultra low cost, and the RFDANT is an ideal solution
when you need ultra long range and do not want to place any parts onto your PCB.
Even if you will not be using the RFDANT for your application, it is still highly recommended to place the 11 pin
connector footprint on your PCB for the RFD21733 so you can have the option to simply plug in the RFDANT for
testing during your proto phases, or if you happen to have a customer come to you and ask for more range, you can
simply give it to them by not soldering the RFD21733 and instead plugging in the RFD21742 or RFD21743 RFDANT.
If you have further questions about the trade offs between the Modules and the RFDANTs, always feel free to
contact [e-mail] were you will find very quick and helpful answers to your questions.
RFD21733 Module
Solders to your PCB with its SMT pads.
RFD21742 or RFD21743 RFDANT
Plugs into your PCB using its 8 inch long cable.
Free Applications Support • Email your application questions to [e-mail]
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