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CML Micro CMX992 RF Quadrature/Low IF Receiver

CML Micro CMX992 RF Quadrature/Low IF Receiver is a single-chip, high-performance RF receiver IC for analog and digital radio systems. It operates from 100MHz to 1GHz and features an I/Q architecture that supports multiple modulation types and bandwidths with a single radio design. The CMX992 offers user-selected modes suited to different application requirements. CMX992 is for use in applications with highly linear modulations, including TETRA, where a typical transmitter solution would include a Cartesian Feedback Transmitter. Available in a 48-pin VQFN package, the device operates from a single 3.3V supply within a -40°C to +85°C temperature range.

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.

Features

  • High performance (100MHz to 1GHz) RF receiver
  • Rx
    • RF mixer with output select
    • 1st IF input select
    • 1st IF Variable Gain Amplifier (VGA)
    • 1st IF Signal Level Indicator (SLI)
    • Two-mode demodulator
    • I/Q zero IF with differential outputs
    • 2x selectable IF outputs (450kHz or 455kHz)
  • IF
    • IF LO synthesizer
    • IF VCO negative-resistance amplifier
  • 3.0V to 3.6V operating supply range
  • 11.5dB to 13dB typical noise figure range
  • -40°C to +85°C operating temperature range

Applications

  • Analog, digital, and multi-mode radio
  • Software Defined Radio (SDR)
  • Portable, mobile, and base station terminals
  • TETRA and APCO P25: Phase 1 and Phase 2 TDMA
  • Automatic Identification System (AIS) transponders
  • Constant envelope and linear modulation
  • Compatible with CMX998
  • 25kHz, 12.5kHz, and 6.25kHz narrowband systems
  • EN 302 561 wideband systems
  • APCO Project 25: TIA-102.CAAB, ETSI: EN 300 113, EN 301 166, EN 300 220, TS 102 361 (DMR)
  • Satellite communications

Videos

Block Diagram

Block Diagram - CML Micro CMX992 RF Quadrature/Low IF Receiver

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Veröffentlichungsdatum: 2019-11-19 | Aktualisiert: 2023-08-01