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Original question:

LMX2595: LMX2595

LMX2595: LMX2595

singam vamshi krishna
Intellectual 775 points
Part Number: LMX2595


Hello everyone. In my application I am making use of LMX2595 IC for generating Ku band frequency. So, initially I have made use of LMX2595EVM and performed testing. Now I want to realize the schematic of LMX2595 IC.

I am attaching the schematic below in which I am feeding the reference input externally.  

Any thing to be added in the schematic below and any guidance in PCB implementation.  

Thanks in advance.

  • 0
    TI__Genius 11900 points

    Hello Singam,

    It looks like the schematic is based on the EVM. I cannot see the all the component values clearly, but following the EVM schematic should be fine.

    https://www.ti.com/lit/ug/snau219b/snau219b.pdf?&ts=1589587651434

    Things I am concerned about:

    1. Your CSB pin is floating, you will need this pin to write values to the device. Please refer to the datasheet.
    2. Please connect the following unused pins to GND: SYNC (pin 5), SYSREFREQ (Pin 28), RAMPCLK (Pin 30), and RAMPDIR (Pin 32)
    3. I cannot see past R29 and R20, but I assume there is a Vcc connection there

    Thanks,

    Vibhu