RF Quadrature Modulator 100MHz to 1GHz GEH: VQFN-48*VPE: 260*(RoHS-konform)
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Product Description

The CMX993W is a wide-bandwidth (>50MHz IQ) integrated, low voltage quadrature (I/Q) modulator IC suitable for use in applications operating from 30MHz to 1000MHz. The device integrates two matched double balanced mixers driven from a buffered and quadrature split local oscillator. The LO frequency is divided by either 2 or 4. The mixers form an I/Q vector modulator with programmable gain stages offering up to 30dB of gain, controlled in 2.5dB steps.

Uncommitted low frequency differential amplifiers are provided for users to configure. These may be used to implement functions such as filtering, differential- to single-ended signal conversion and level shifting.

A digital control interface, C-BUS, (an SPI compatible interface) allows gain control as well as power management of individual internal blocks to optimise system performance. The C-BUS interface operates from its own supply domain enabling the device to be interfaced to different voltage baseband devices. The CMX993 device is supplied in an RF optimised VQFN package.


  • Wide I/Q Bandwidth - >50MHz
  • 30MHz to 1GHz Operating Frequency
  • Wide Band Noise -148dBc/Hz
  • Wide Band Noise -148dBc/Hz
  • Noise Floor -155dBm/Hz
  • Programmable 30dB Output Gain Rang
  • +3dBm (PEP) Output Power
  • Low LO Drive Requirements, -15dBm
  • Uncommitted Amplifiers for Filtering and Interfacing
  • +25dBm Equivalent Output IP3
  • Low Voltage 3.3V Operation
Voltage:3.0 to 3.6 VDC
Form factor:48-pin VQFN
Temperature:-40 to +85 °C
Dimensions:7.0 x 7.0 x 0.9 mm
Current:95 mA
Local Oscillator Input:60 to 2000 MHz
RF/IF Output:30 to 1000 MHz
Gain:-2 dB
P 1dB:8 dBm
Input Bandwidth:>50 MHz
C-BUS (SPI) Control Interface:yes