CMX998Q1-TR1K

Overview

The CMX998Q1-TR1K is an RF transmitter IC from CML Microcircuits, designed for power amplifier linearization within a frequency range of 30 MHz to 1 GHz. It utilizes a Cartesian feedback loop architecture and operates on a supply voltage between 3 V and 3.6 V. The device supports SPI interface control and functions reliably across temperatures from -40°C to +85°C. It is housed in a 64-pin VQFN (9x9 mm) package and is supplied in a tape-and-reel configuration.

Feature Summary

• Integrates Cartesian feedback loop technology for effective power amplifier linearization
• Supports wideband operation covering the 30 MHz to 1 GHz RF spectrum
• Features digital control via Serial Peripheral Interface (SPI)
• Designed for surface-mount installation in compact form factors

Applications

• Wireless communication systems requiring PA linearization
• General purpose RF up/down conversion circuits
• Test and measurement equipment operating in the specified RF range

Procurement Notes

Verify the specific suffix TR1K indicates the tape-and-reel packaging format distinct from tray options. Confirm the 64-VQFN package dimensions match your PCB footprint requirements. Ensure the 3V to 3.6V supply voltage aligns with your system design constraints before finalizing procurement.

Selection Notes

Select this component when active linearization of power amplifiers is required in the 30 MHz to 1 GHz band. The CMOS silicon technology offers integration benefits over discrete solutions. Consider the VQFN-64 package size for space-constrained designs requiring high-performance RF transmission capabilities.

Part Context

This part belongs to the CMX998 series of RF transmitters manufactured by CML Microcircuits. The series focuses on integrated solutions for wireless applications, combining transmitter functions with linearization features. The CMX998Q1 variant specifically targets broad RF coverage using Cartesian feedback techniques.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing circuit designs if considering alternative linearization ICs from other manufacturers.