CMX992 RF Quadrature/IF Receiver

Applications:
Analogue /digital multimode radio
SDR (Software Defined Radio)
Portable, mobile and base station terminals
Data telemetry modems
TETRA
APCO P25: Phase 1 and Phase 2 TDMA
Automatic Identification System (AIS) transponders
Constant envelope and linear modulation
Compatible with CMX998
Narrowband: 25kHz, 12.5kHz, 6.25kHz
Wideband (e.g. EN 302 561)
APCO Project 25: TIA-102.CAAB
ETSI: EN 300 113, EN 301 166, EN 300 220
TS 102 361 (DMR)
WIMAX
Satellite Communications

Brief Description
The CMX992 is a single-chip, high performance, RF receiver IC. It operates from 100MHz to 1GHz and its I/Q architecture supports multiple modulation types and bandwidths with a single radio design. The CMX992 integrates first mixer, Rx demodulators, IF PLL, and IF VCO subsystems that minimize the external circuits needed to implement a complete receiver. User-selected modes suit different application requirements.
The Rx path includes an integrated 1st Rx mixer having two outputs to support two external 1st IF filter choices, then an integrated 2:1 input mux followed by VGA and wideband signal level measurement functions to support AGC implementation. The 1st IF signal is then either I/Q demodulated to zero IF or mixed to a low IF output. The CMX992 provides differential and single-ended Rx output options and differential amplifiers for flexible signal conditioning.
The CMX992 includes the core RF and IF functions of a high performance receiver and can be used in a wide range of narrowband and wideband wireless products including multi mode analogue/digital terminals. The device operates from a single 3.3V supply over a temperature range of -40°C to +85°C and is available in a 48-pin VQFN (Q3) package.
The CMX992 can be used where highly linear modulations are being used, e.g. for applications such as TETRA, where a typical transmitter solution would include the CMX998 Cartesian Feedback Transmitter.