DE9941 Datasheet, PDF (1/2 Pages) CML Microcircuits – Cartesian Loop Transmitter

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DE9941
SDR 1 Demonstrator
Software Defined Radio Demonstrator for Linear Radio Systems
PP/9941/1 September 2012
Introduction
There is a growing market
requirement for small , flexible
Software Defined Radio (SDR)
data modems.
The technology to accomplish
this is now available with the
release of CML’s highly
integrated RF and baseband
product offerings: CMX998,
CMX994 and CMX7164.
The CMX998 is a market-leading
Cartesian Loop Transmitter IC
providing optimum PA
linearisation for non-constant
envelope/linear systems.
The CMX994 is the ultimate
Direct Conversion Receiver,
providing direct conversion from
RF down to I/Q baseband.
The CMX7164 multi-mode
Wireless Data Modem IC, based
on FirmASIC® technology, offers
multiple modulation schemes
that can be uploaded into the
device via Function Image™. The
device supports both linear and
non-linear modulation schemes
(2-FSK, 4-FSK, GMSK, 4-QAM, 16-
QAM and 64-QAM).
Design Support
Available via the CML website
(www.cmlmicro.com)
 User manual
 Board schematics
 Board Gerber files
 BOM list
 Scripts
 CMX998, CMX994,
CMX7164 individual IC
datasheets
DE9941 Brief Description
The DE9941 is a small demonstration platform for a linear modulation-based
Software Defined Radio (SDR) for wireless data applications.
The small form factor of this credit card sized board is possible due to the high
integration of key functions comprising:
 Cartesian Loop Transmitter - CMX998
 Direct Conversion Receiver - CMX994
 Multi-mode Wireless Data Modem - CMX7164
The DE9941 can be used to demonstrate transmit and receive performance with
4/16/64 QAM linear modulation and constant-envelope modulation schemes such as
2/4-level FSK and GMSK, that are also available on the CMX7164 Multi-mode
Wireless Data Modem.
Included on board is a 1W power amplifier and RF performance is designed to be
compliant with EN 302 561
The design is aimed to be small and low cost, with the minimal number of
components/values.
Feature Summary
 Demonstration of SDR Wireless Data Modem
 Direct Conversion Receiver, Linear Cartesian Loop Transmitter, Fractional-n PLL
and VCO
 1W Transmitter operation
 Designed to meet EN 302 561
 On-board PLL and VCO for 452MHz to 467MHz operation
 Single serial C-BUS interface
 Connects directly to PE0002 Interface Board
 Scripts available for quick-start evaluation
 Small size - 83mm x 55mm
Links
 www.cmlmicro.com
 DE9941 product page
© 2012 CML Microsystems Plc
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