CMX998Q1

Overview

The CMX998Q1 is an RF transmitter integrated circuit manufactured by CML Micro, designed for linearization and power amplifier control applications. It operates within a frequency range of 30 MHz to 1 GHz. The device utilizes a Cartesian feedback loop architecture to enhance signal fidelity. It is housed in a 64-pin VQFN package measuring 9x9 mm, suitable for surface-mount technology. The component supports a supply voltage range from 3 V to 3.6 V and functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Implements Cartesian feedback loop technology for precise linearization
• Supports wideband operation across the 30 MHz to 1 GHz spectrum
• Integrates power amplifier linearization capabilities within a single IC

Applications

• RF transmitter systems requiring high linearity
• Power amplifier linearization circuits
• General purpose up/down conversion modules

Procurement Notes

Verify the specific ordering suffix when sourcing components, as packaging variations such as tray or reel formats may exist under distinct part numbers like CMX998Q1-REEL. Confirm that the received unit matches the exact manufacturer part number and package type specified in the design documentation to ensure compatibility with the intended PCB layout and assembly process.

Selection Notes

Select this component for designs requiring active linearization of RF signals within the specified frequency band. Ensure the system architecture accommodates the SPI interface for configuration and control. Verify that the available board space aligns with the 64-VQFN footprint dimensions and that the thermal management strategy supports the operational temperature limits defined for the device.

Part Context

This component belongs to the CML Micro RF Transmitter product family, specifically engineered for wireless communication subsystems. It complements other receiver and mixer solutions offered by the manufacturer, providing a complete set of building blocks for transceiver design. The series focuses on integrating complex RF functions into compact packages to reduce overall system size and complexity.

Replacement Considerations

No direct public substitute part numbers are confirmed for this specific model.