CMX993/CMX993W

– RF (I/Q) Quadrature Modulator

RF Building Blocks, Transmitters

CMX993/CMX993W

– RF (I/Q) Quadrature Modulator

Two separate, high performance, RF quadrature modulator ICs: the standard CMX993 and the wide bandwidth CMX993W product variant.

The CMX993/CMX993W is an integrated, low voltage IQ quadrature modulator 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 a factor of 2 or 4. The mixers form an I/Q vector modulator with programmable gain stages offering up to 30dB of gain control in 2.5dB steps.

Uncommitted low frequency differential amplifiers are provided for users to configure. This 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 optimize 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 and CMX993W devices are supplied in an RF optimized VQFN package.

Devices are available through our Distributor Network.

Download Datasheet

Block diagram of the CMX993 I/Q modulator, showing input amplifiers, filter/interface amplifiers, I/Q mixer and gain control, and a divide-by-2/4 stage, labelled with I Channel, Q Channel, LO Input, I/Q MOD Output, VREF and C-BUS

CMX993-993W

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Glowing block diagram of RF building blocks showing amplifier, filter, mixer, isolator and amplifier stages connected in series

CMX940

High Performance Synthesizer (HPS)

Key Features

RF/IF Range MHz: 49 MHz - 2040 MHz
Normalised PN (dBc/Hz): -225
Max Fcomp (MHz): 120
PN at 25kHz (dBc/Hz): -123 (at 435 MHz)
Supply Voltage (V): 3.0 - 3.6
Typ. Current (mA): 23 - 64
Package Type: 40-LGA

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Glowing block diagram of RF building blocks showing amplifier, filter, mixer, isolator and amplifier stages connected in series

CMX973

Low Power RF Quadrature

Key Features

Supply Voltage (V): 3.0 - 3.6
Package Type: 32-VQFN
Tx RF/IF Range (MHz): 20 -1000
Tx I/Q BW (MHz): 25
Tx IP3 OP/IP (dBm): 14
Tx Noise / Noise Figure (dBm/Hz)/(dB)): -150
Tx Power / Gain (dBm) / (dbV/V)): 0 (PEP)
Tx Typ. Current (mA): 61
Rx RF/IF Range (MHz): 20 - 300
Rx I/Q BW (MHz): 10
Rx IP3 OP/IP (dBm): -15
Rx Noise / Noise Figure (dBm/Hz)/(dB)): 10db
Rx Power / Gain (dBm) / (dbV/V)): 56dB
Rx Typ. Current (mA): 15

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Glowing block diagram of RF building blocks showing amplifier, filter, mixer, isolator and amplifier stages connected in series

CMX993/CMX993W

RF Quadrature Modulator

Key Features

RF/IF Range (MHz): 30 - 1000
I/Q BW (MHz): 10
Output IP3 (dBm): 25
Noise Floor (dBm/Hz): -155
Output Power (dBm): 3 (PEP)
Supply Voltage (V): 3.0 -3.6
Typ. Current (mA): 95
Package Type: 48-VQFN

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Glowing block diagram of RF building blocks showing amplifier, filter, mixer, isolator and amplifier stages connected in series

CMX994EF

RF Direct Conversion Receiver IC

Key Features

RF/IF Range (MHz): 100 - 1000
I/Q BW (MHz): >1
Input IP3 (dBm): 6
Noise Figure (dB): 6
Gain (dB(V/V)): 62
Supply Voltage (V): 3.0 - 3.6
Typ. Current (mA): 74
Package Type: 40 - VQFN

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Glowing block diagram of RF building blocks showing amplifier, filter, mixer, isolator and amplifier stages connected in series

CMX998

Cartesian Feedback Loop

Key Features

RF/IF Range (MHz): 30 - 1000
I/Q BW (MHz): 0.2
Noise Floor (dBm/Hz): -155
Output Power (dBm): 3 (PEP)
Supply Voltage (V): 3.0 - 3.6
Typ. Current (mA): 135
Package Type: 64-VQFN

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