This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Replacement for LMX2311U

Other Parts Discussed in Thread: LMX2470, LMX2491

Hi TI expert

The LMX2311U is listed as an obsolete part.  Do you have a replacement part?

Best regards,


  • Hi Thomas,

    Most of our RF portfolio uses a dual RF/IF PLL architecture, but if you use only one of the PLLs in the device, something like LMX2470 should be very similar to LMX2311U with similar power performance. If the power consumption can be increased (~60mA), the LMX2491 offers much better performance.

    Most of TI's devices have moved toward high performance and integrated VCOs. However, a search on the RF synthesizer portfolio page on () sorted by lowest power will locate any devices that still resemble the architecture used by the LMX2311U, in case one of the other devices above is insufficient.