Consumer Microcircuits Limited CMX993
The CMX993 and CMX993W are integrated, low voltage quadrature (I/Q) modulator ICs suitable for use in applications operating from 30MHz to 1000MHz. The devices integrate two matched double balanced mixers driven from a buffered and quadrature split local oscillator. The LO frequency is divided by either 2 or 4.FEATURES
APPLICATIONS
● 30MHz to 1GHz Operating Frequency● Wide Band Noise –148dBc/Hz
● Noise Floor –155dBm/Hz
● Programmable 30dB Output Gain Range
● +3dBm (PEP) Output Power
● Low LO Drive Requirements, -15dBm
● Uncommitted Amplifiers for Filtering and Interfacing
● CMX993W – Wide Bandwidth Version (>50MHz I/Q Bandwidth)
● C-BUS (SPI Compatible) Serial Interface
● Low Voltage 3.3V Operation
● Small 7x7mm VQFN Package (Q3)
● +25dBm Equivalent Output IP3
● APCO P25, Wireless Data
● ISM Transmitters
● Digital TV/CATV Modulators
● Wireless LAN, Wireless Local Loop
● IF or RF Modulators
● FSK, GMSK, 4FSK, C4FM
● QPSK, QAM, SSB, OFDM, Multi-carrier Systems
● SDR (Software Defined Radios)
● WiMAX Systems
● OFDM/COFDM Systems
● Satellite Communications
● Cellular Picocell / Nanocell Systems
● RF Channel Bandwidths up to 100MHz Input Amplifiers I Channel Filter/Interface Amplifiers Q Channel I/Q Mixer and Gain Control I/Q MOD Output LO Input Divide by 2 0° or Divide by 4 90° Bandgap Control Interface VREF C-BUS 1 Brief
DESCRIPTION
The LO frequency is divided by either 2 or 4.