hallo. Intrested use power detector out ,pin11. Register 0x03, bit6 . To on detector this bit 0 are 1? By reset it 1. but on pin11 present 1.5 voltage and no changes by rf signal. Is it open collector out ? BR
The detector will have an offset voltage with low rf power/no rf power of around 1V at room temperature.
Yes good catch. Register 0x03, Bit 6 should be 1.
Bit 1 will turn on the detector. Depending on the RF input you will have to change the DET_PROG bits in reg 0x07 (bits 0:6) to notice a change based on the RF power input. Note the ranges presented in the SPI map are based of the power input to the detector and not the RF input into the part so you will have to refer to the OUTPUT DETECTOR PERFORMANCE section as well.
Are you using a CW signal?
Is Voltage have presents on det out without rf power?
On pdf bit 0x3,6 shown as 0 (page 24)
"OUTPUT DETECTOR PERFORMANCE
Register 0x03, Bit 6 = 0, Register 0x03, Bits[13:12] set to 11, and TA = 25°C, unless otherwise noted"
is it error in pdf?
Hallo, Please check picture SPI load. admv no switch to BB mode
Pictured first 0B register loading
Pls provide a picture with the SPI lines labelled. I think I was able to deduce that one line is SCLK and another line was SDI but I do not know which one was SEN. If any of the other 2 lines that go low are SEN then I do not see it coming back up after the end of the SPI transaction. The SEN needs to come back up at the end of the SPI transaction to shift the data in.
How do you verify that part switches to BB mode?