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LMX2492: How to use Trig1、Trig2 or MOD pin to trigger chirp signal transmission

Part Number: LMX2492

Hi team,

One of our customers has the following needs:

Give  Trig1、Trig2 or MOD pin a trigger signal of a rising edge, and then the chirp signal starts to be sent. The cycle of a chirp is 60us. I send the trigger signal every 100us, and a chirp will be generated.

Method: MOD_PIN[2:0] configured as input, MOD_MUX[4:0] is configured as Input MOD; Start next ramp after select Trigger A, RAMP_TRIGA[3:0] is configured as

MOD terminal rising edge

Question: after configuration, the radar only generates a chirp signal, and then a single tone signal that is always the initial value. Is there a problem with my configuration?

Best Regards,

Amy Luo

  • Hi Amy,

    In Ramp0, after ramping to 3212.9MHz, what does the customer want to to? From their configuration, after Trigger A is applied, it will go back to 3200MHz and then ramp up again. Is this what they want to do?