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ADS52J65: Decimation block bypass setting

Part Number: ADS52J65


In order to bypass the decimation block and directly receive the ADC output, are there any registers that need to be controlled in addition to the decimation block disable bit?

Thank you.


  • Hi JH, 

    The demodulator block contains decimation block, down-conversion block, and channel compression logic (see figure 65. DEMOD block diagram). By default, the demodulator is disabled and bypassed (that is, ADC data are directly sent to the output). This means, the decimation and down-conversion blocks are also disabled by default.  

    If you want to enable demodulator but bypass decimation - 

    1. Pull the SENZ2 pin high; Pull the SENZ1 pin low

    2. Enable the demodulator by setting the EN_DEMOD = 1 and DIG_CH_EN = 1

    3. Pull the SENZ2 pin low. When the SENZ2 pin is pulled low, different settings of the demodulator block are programmed including DEC_BYPASS = 1 (for bypassing decimation)

    4. Pull SENZ1 and SENZ2 high after all the relevant programming