CMX991

CMX991/CMX992 CML Microcircuits RF Quadrature Transmitter and COMMUNICATION SEMICONDUCTORS RF Quadrature/Low IF Receiver D/991_992/22 May 2017 Provisional Issue This document describes two separate, high performance, RF ICs covering the range: 100MHz1 to 1GHz. The CMX991 is an RF Quadrature Transceiver and the CMX992 is an RF Quadrature Receiver. Features  Rx (CMX991 and CMX992) o RF mixer with output select o 1st IF input select o Selectable low IF outputs (450kHz/455kHz) o 1st IF Variable Gain Amplifier (VGA) o 1st IF Signal Level Indicator (SLI) o Two-mode demodulator o I/Q Zero-IF with differential outputs  Tx (CMX991 only) o I/Q modulator to IF o Image-reject up-converter o IF and RF outputs  IF (CMX991 and CMX992) o IF LO synthesiser o IF VCO negative resistance amplifier  3.3V low power operation Applications  Analogue/digital multimode radio  Software Defined Radio (SDR)  Portable, mobile and base station terminals  Data telemetry modems  TETRA (CMX992)  ETSI: EN 300 113, EN 301 166, EN 302 561, EN 300 220, TS 102 361 (DMR)  Automatic Identification System (AIS) transponders  Constant envelope and linear modulation  Compatible with CMX998 (CMX992 only)  Narrowband: e.g. 25kHz, 12.5kHz, 6.25kHz  Wideband: up to 2MHz  APCO Project 25 (P25) Phase 1 and Phase 2 TDMA: TIA-102.CAAB  Satellite communications 1 Brief Description The CMX991 is a single-chip, high performance, RF transceiver that provides the core functions required to implement a full-fe...