CMX973
– RF Quadrature Modulator/Demodulator
CMX973
– RF Quadrature Modulator/Demodulator
The CMX973 is a high performance RF quadrature modulator/demodulator featuring a wide operating frequency range and attractive power consumption.
The CMX973 forms the basis of a high-performance RF transceiver system combining a flexible IF/RF quadrature modulator and quadrature demodulator.
Wide signal bandwidth at RF, 0dBm output, low noise and serial bus control delivers maximum flexibility and high-performance, at a low operating power. It is suitable for superheterodyne architectures with IF frequencies of 20MHz to 300MHz and may be used in low IF systems or those converting down to baseband.
The modulator converts directly from baseband to the desired transmit frequency 20MHz to 1GHz and features quadrature phase correction to minimise unwanted spectral components.
The differential inputs are ideal for direct connection to standard modems and interface ICs such as CML’s CMX7163 QAM Data Modem, CMX910 AIS Baseband Signal Processor, CMX981 Digital Radio Baseband Processor and more!
Devices are available through our Distributor Network.
Features of the CMX973 – RF Quadrature Modulator/Demodulator include:
- 20 – 300MHz IF/RF Demodulator
- 10MHz Rx and 25MHz Tx I/Q Bandwidth
- 20 – 1000MHz RF Modulator 0dBm Modulator Output
- < 1 degree I/Q Demod Phase Matching
- < 0.5dB I/Q Demod Gain Matching
- IF PLL and VCO amp
- Low Power Mod/Demod 61mA/15mA @ 3.3V
- Small 32-pin VQFN Package
Applications the CMX973 – RF Quadrature Modulator/Demodulator can be used for:
- Wireless Data Terminals
- HF/VHF and UHF Mobile Radio
- Avionics Radio Systems
- Telemetry Modems
- Wireless Microphones
- Software Defined Radio (SDR)
- Satellite Terminals
Power Supply Requirements for the CMX973 – RF Quadrature Modulator/Demodulator:
- 3.0 to 3.6 V power supply
Frequency Estimation for a VCO using a Negative Resistance Amplifier
Application Note describing how to estimate the operating frequency of VCO designs using a negative resistance amplifier. An Excel spreadsheet that automates the calculation is available below.
Excel Spreadsheet – Frequency Estimation for a VCO using a Negative Resistance Amplifier
An Excel spreadsheet that calculates the operating frequency of VCO designs using a negative resistance amplifier. An Application Note describing the process is available above.
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| EV9730 | The EV9730 is an Evaluation Kit designed for evaluating and demonstrating the capabilities of the CMX973 RF Quadrature Modulator/Demodulator IC. | EV9730_Product_Preview
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C-BUS Guides
Guides to operation and interfacing
EV9730 Board Schematics
EV9730 high resolution schematics. Version A02
EV9730 Evaluation Software
EV9730 Evaluation Software. Requires a PE0003 Universal Interface Card. Version 3.1
EV9730 Quick Start
A simple guide to help users get started evaluating the EV9730. Version 1
EV9730 PCB Information
Additional information for EV9730 serial numbers 201608-201631 and 202397-202420
Download
PE0003 Driver
PE0003 USB driver for Windows. Version 1.0
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