CMX971

CML Microcircuits COMMUNICATION SEMICONDUCTORS CMX971 Quadrature Modulator D/971/4 February 2015 Features  20 – 1000MHz RF Output  0dBm Output  25MHz I/Q Bandwidth  Serial Bus or Direct Control Operation  Low Power 3.0V – 3.6V Operation  Small 16-lead VQFN Package Provisional Issue Applications  Wireless Data Terminals  HF/VHF and UHF Mobile Radio  Avionics Radio Systems TXIN TXQP TXQN CBUSOFFN TXIP RFOUT RFGND VCC Divide by 2 or 4 CBUS logic VSS CSN/ FREQ2 RDATA/ DIVSET SCLK/ RESETN LO LOGND CDATA/ VDD FREQ1 1 Brief Description The CMX971 is a high performance quadrature modulator featuring a wide operating frequency range and attractive power consumption. Control of the CMX971 may be either by serial bus or by direct control (with reduced functionality). Programmable features include the local oscillator divider ratio (2 or 4). The small, RF-optimised VQFN package and minimal external components make the device ideal for spaceconstrained applications.  2015 CML Microsystems Plc Quadrature Modulator CMX971 CONTENTS Section Page 1 Brief Description .................................................................................................. 1 1.1 History.............................................................................................................. 3 2 Block Diagram ...................................................................................................... 4 3 Pin and Signal List ........................................