CMX994GQ4

Product Description

The CMX994G is one of a family of direct conversion receiver ICs with PowerTrade, the ability to dynamically select power vs. performance modes to optimise operating trade-offs. It includes 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 device operates from a single 3.3V supply over a temperature range of 40°C to +85°C and is available in a small 40-pin VQFN (Q4) package.

The CMX994G allows signals as low in frequency as 30MHz to be down-converted, along with an enhanced perfromance mode for improved intermodulation perfromance in the receive mixers, as well as enabling a reduction in power consumption, by allowing LO phase-correction to be turned off. A further reduction in power consumption is possible by disabling either the I or Q channel in a channel-mirroring mode.

Features

• 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 940MHz I/Q demodulator
• 100MHz to 940MHz I/Q demodulator
• LNA with gain control
• Local Oscillator with LO synthesiser, VCO negative resistance amplifier, Rx LO divide by 2, 4 or 6 modes, and Tx LO Output with divide by 1, 2, 4, or 6 modes
• Precise filtering with 1:2:4 bandwidth select control
• 3.0V 3.6V Low power Operation
• Small size 40-pin VQFN Package
• Standard and Additional Low Power Modes
• Enhanced Intermodulation mixer-performance with Guaranteed perfromace with 30MHz RF input