CMX994/994A/994E数据手册CML Micro中文资料规格书

描述 Description

The CMX994 /CMX994A /CMX994E is a family of direct conversion receiver ICs with PowerTrade™, the ability to dynamically select power vs. performance modes to optimise operating trade-offs.
CMX994 – Standard and low power modesCMX994A – Standard and additional low power modesCMX994E – Enhanced, standard and low power modes
The CMX994/A/E offer exceptional blocking performance, typical values are in the range 98dB to 102dB depending on the measurement method. All three devices include a broadband LNA with gain control followed by a high dynamic range, very high IIP2, I/Q demodulator. The receiver baseband section includes amplifiers and precise, configurable bandwidth, baseband filter stages. LO generation is provided by an integer-N PLL and a VCO negative resistance amplifier; an external LO may also be used. LO dividers are provided for flexible multi-band operation.
the CMX994/A/E operates from a single 3.3V supply over a temperature range of –40°C to +85°C and are available in a small 40-pin VQFN (Q4) package.

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特性 Features

• Direct Conversion Receiver Family with PowerTrade™ Flexible Power vs. Performance Modes – CMX994 – Standard and Low Power Modes – CMX994A – Standard and Additional Low Power Modes – CMX994E – Enhanced, Standard and Low Power Modes
• Rx Single Conversion to Zero IF, Near-zero IF or Low IF; Zero IF Eliminates Image Responses
• Very High Mixer IIP2 for Practical Zero IF Receiver
• 100MHz to 1000MHz I/Q Demodulator (CMX994A/E) 100MHz to 940MHz I/Q Demodulator (CMX994) Extended Operation down to 50MHz
• LNA with Gain Control
• Precise Filtering with 1:2:4 Bandwidth Select Control
• Mixer Bandwidth up to 20MHz
• Local Oscillator – LO synthesiser – VCO Negative Resistance Amplifier – Rx LO Divide by 2, 4 or 6 Modes – Tx LO Output with Divide by 1, 2, 4 or 6 Modes
• Small Size 40-pin VQFN Package

应用 Application

• Analogue/digital Multi-mode Radio
• Software Defined Radio (SDR)
• Data Telemetry Modems
• Satellite Communications
• Constant Envelope and Linear Modulation
• Rx Function Compatible with CMX998
• Cartesian Feedback Loop Transmitter
• Narrowband e.g.: 25kHz, 12.5kHz and 6.25kHz
• Wideband Data e.g. >1MHz Bandwidth