CMX975Q4-TR1K

Overview

The CMX975Q4-TR1K is a monolithic up/down converter from CML Micro, operating within the 1 GHz to 2.7 GHz RF frequency range. It integrates a Low Noise Amplifier (LNA), dual Phase-Locked Loops (PLLs), and a Voltage-Controlled Oscillator (VCO) into a single package. The device supports an intermediate frequency (IF) range of 10 MHz to 500 MHz and a local oscillator (LO) frequency range of 700 MHz to 3 GHz. Key electrical specifications include a gain of 7 dB, a P1dB compression point of -11 dBm, and a noise figure of 15 dB. It operates on a supply voltage between 2.7 V and 3.6 V, with a maximum power dissipation of 1.82 W. The third-order intercept point (OIP3) is rated at 2 dBm. The component is housed in a 40-VQFN package.

Feature Summary

• Integrates LNA, dual PLLs, and VCO for compact RF front-end design
• Supports both up-conversion and down-conversion operations
• Enables flexible frequency synthesis via wide LO tuning range

Applications

• Wireless communication systems requiring integrated frequency conversion
• RF building block implementations in transceiver architectures
• Military and aerospace radio systems utilizing Si-based RF components

Procurement Notes

Verify the specific suffix against official documentation to confirm packaging configuration. Ensure compatibility with moisture sensitivity levels during storage and reflow processes. Confirm that the required LO and IF frequencies align with the specified operational ranges. Validate supply voltage requirements against system power rails. Check RoHS compliance status if environmental regulations apply to the final assembly.

Selection Notes

Select this component when a highly integrated solution is needed to minimize board space and component count. The inclusion of dual PLLs allows for independent frequency synthesis capabilities. Consider the thermal performance given the power dissipation rating. Evaluate the noise figure and linearity metrics against system link budget requirements. Ensure the VQFN package footprint fits the available PCB layout constraints.

Part Context

This part belongs to the CMX975 series, which is categorized under CML Micro's RF Building Block range. The series focuses on providing complete functional blocks for wireless communications. The manufacturer specializes in semiconductor solutions for emerging wireless markets. The product utilizes Silicon technology for its RF performance characteristics.

Replacement Considerations

Consult official substitution lists for verified alternatives. Generic replacements may not match the integrated dual PLL and VCO architecture. Verify pinout compatibility before considering any cross-reference parts.