AD9364/61

Hi

How much is the gain settling time (to settle one gain index to another)? is it total of Peak over load wait time and settling delay. or is it dependent on any other parameters?

Thanks

Parents
    •  Analog Employees 
    on Nov 20, 2020 10:39 AM 4 months ago

    Please refer to below link,

    https://ez.analog.com/wide-band-rf-transceivers/design-support/f/q-a/79200/ad9361-fast-agc

    https://wiki.analog.com/resources/eval/user-guides/ad9361_agc_tuning

    Please refer use guide UG-571 section "GAIN CONTROL" for more details on AGC.

    Below are the AGC config parameters.

    /* Gain AGC Control */
    10, //agc_adc_large_overload_exceed_counter *** adi,agc-adc-large-overload-exceed-counter
    2, //agc_adc_large_overload_inc_steps *** adi,agc-adc-large-overload-inc-steps
    0, //agc_adc_lmt_small_overload_prevent_gain_inc_enable *** adi,agc-adc-lmt-small-overload-prevent-gain-inc-enable
    10, //agc_adc_small_overload_exceed_counter *** adi,agc-adc-small-overload-exceed-counter
    4, //agc_dig_gain_step_size *** adi,agc-dig-gain-step-size
    3, //agc_dig_saturation_exceed_counter *** adi,agc-dig-saturation-exceed-counter
    1000, // agc_gain_update_interval_us *** adi,agc-gain-update-interval-us
    0, //agc_immed_gain_change_if_large_adc_overload_enable *** adi,agc-immed-gain-change-if-large-adc-overload-enable
    0, //agc_immed_gain_change_if_large_lmt_overload_enable *** adi,agc-immed-gain-change-if-large-lmt-overload-enable
    10, //agc_inner_thresh_high *** adi,agc-inner-thresh-high
    1, //agc_inner_thresh_high_dec_steps *** adi,agc-inner-thresh-high-dec-steps
    12, //agc_inner_thresh_low *** adi,agc-inner-thresh-low
    1, //agc_inner_thresh_low_inc_steps *** adi,agc-inner-thresh-low-inc-steps
    10, //agc_lmt_overload_large_exceed_counter *** adi,agc-lmt-overload-large-exceed-counter
    2, //agc_lmt_overload_large_inc_steps *** adi,agc-lmt-overload-large-inc-steps
    10, //agc_lmt_overload_small_exceed_counter *** adi,agc-lmt-overload-small-exceed-counter
    5, //agc_outer_thresh_high *** adi,agc-outer-thresh-high
    2, //agc_outer_thresh_high_dec_steps *** adi,agc-outer-thresh-high-dec-steps
    18, //agc_outer_thresh_low *** adi,agc-outer-thresh-low
    2, //agc_outer_thresh_low_inc_steps *** adi,agc-outer-thresh-low-inc-steps
    1, //agc_attack_delay_extra_margin_us; *** adi,agc-attack-delay-extra-margin-us
    0, //agc_sync_for_gain_counter_enable *** adi,agc-sync-for-gain-counter-enable
    /* Fast AGC */
    64, //fagc_dec_pow_measuremnt_duration *** adi,fagc-dec-pow-measurement-duration
    260, //fagc_state_wait_time_ns *** adi,fagc-state-wait-time-ns
    /* Fast AGC - Low Power */
    0, //fagc_allow_agc_gain_increase *** adi,fagc-allow-agc-gain-increase-enable
    5, //fagc_lp_thresh_increment_time *** adi,fagc-lp-thresh-increment-time
    1, //fagc_lp_thresh_increment_steps *** adi,fagc-lp-thresh-increment-steps
    /* Fast AGC - Lock Level (Lock Level is set via slow AGC inner high threshold) */
    1, //fagc_lock_level_lmt_gain_increase_en *** adi,fagc-lock-level-lmt-gain-increase-enable
    5, //fagc_lock_level_gain_increase_upper_limit *** adi,fagc-lock-level-gain-increase-upper-limit
    /* Fast AGC - Peak Detectors and Final Settling */
    1, //fagc_lpf_final_settling_steps *** adi,fagc-lpf-final-settling-steps
    1, //fagc_lmt_final_settling_steps *** adi,fagc-lmt-final-settling-steps
    3, //fagc_final_overrange_count *** adi,fagc-final-overrange-count
    /* Fast AGC - Final Power Test */
    0, //fagc_gain_increase_after_gain_lock_en *** adi,fagc-gain-increase-after-gain-lock-enable
    /* Fast AGC - Unlocking the Gain */
    0, //fagc_gain_index_type_after_exit_rx_mode *** adi,fagc-gain-index-type-after-exit-rx-mode
    1, //fagc_use_last_lock_level_for_set_gain_en *** adi,fagc-use-last-lock-level-for-set-gain-enable
    1, //fagc_rst_gla_stronger_sig_thresh_exceeded_en *** adi,fagc-rst-gla-stronger-sig-thresh-exceeded-enable
    5, //fagc_optimized_gain_offset *** adi,fagc-optimized-gain-offset
    10, //fagc_rst_gla_stronger_sig_thresh_above_ll *** adi,fagc-rst-gla-stronger-sig-thresh-above-ll
    1, //fagc_rst_gla_engergy_lost_sig_thresh_exceeded_en *** adi,fagc-rst-gla-engergy-lost-sig-thresh-exceeded-enable
    1, //fagc_rst_gla_engergy_lost_goto_optim_gain_en *** adi,fagc-rst-gla-engergy-lost-goto-optim-gain-enable
    10, //fagc_rst_gla_engergy_lost_sig_thresh_below_ll *** adi,fagc-rst-gla-engergy-lost-sig-thresh-below-ll
    8, //fagc_energy_lost_stronger_sig_gain_lock_exit_cnt *** adi,fagc-energy-lost-stronger-sig-gain-lock-exit-cnt
    1, //fagc_rst_gla_large_adc_overload_en *** adi,fagc-rst-gla-large-adc-overload-enable
    1, //fagc_rst_gla_large_lmt_overload_en *** adi,fagc-rst-gla-large-lmt-overload-enable
    0, //fagc_rst_gla_en_agc_pulled_high_en *** adi,fagc-rst-gla-en-agc-pulled-high-enable
    0, //fagc_rst_gla_if_en_agc_pulled_high_mode *** adi,fagc-rst-gla-if-en-agc-pulled-high-mode
    64, //fagc_power_measurement_duration_in_state5 *** adi,fagc-power-measurement-duration-in-state5

Reply
    •  Analog Employees 
    on Nov 20, 2020 10:39 AM 4 months ago

    Please refer to below link,

    https://ez.analog.com/wide-band-rf-transceivers/design-support/f/q-a/79200/ad9361-fast-agc

    https://wiki.analog.com/resources/eval/user-guides/ad9361_agc_tuning

    Please refer use guide UG-571 section "GAIN CONTROL" for more details on AGC.

    Below are the AGC config parameters.

    /* Gain AGC Control */
    10, //agc_adc_large_overload_exceed_counter *** adi,agc-adc-large-overload-exceed-counter
    2, //agc_adc_large_overload_inc_steps *** adi,agc-adc-large-overload-inc-steps
    0, //agc_adc_lmt_small_overload_prevent_gain_inc_enable *** adi,agc-adc-lmt-small-overload-prevent-gain-inc-enable
    10, //agc_adc_small_overload_exceed_counter *** adi,agc-adc-small-overload-exceed-counter
    4, //agc_dig_gain_step_size *** adi,agc-dig-gain-step-size
    3, //agc_dig_saturation_exceed_counter *** adi,agc-dig-saturation-exceed-counter
    1000, // agc_gain_update_interval_us *** adi,agc-gain-update-interval-us
    0, //agc_immed_gain_change_if_large_adc_overload_enable *** adi,agc-immed-gain-change-if-large-adc-overload-enable
    0, //agc_immed_gain_change_if_large_lmt_overload_enable *** adi,agc-immed-gain-change-if-large-lmt-overload-enable
    10, //agc_inner_thresh_high *** adi,agc-inner-thresh-high
    1, //agc_inner_thresh_high_dec_steps *** adi,agc-inner-thresh-high-dec-steps
    12, //agc_inner_thresh_low *** adi,agc-inner-thresh-low
    1, //agc_inner_thresh_low_inc_steps *** adi,agc-inner-thresh-low-inc-steps
    10, //agc_lmt_overload_large_exceed_counter *** adi,agc-lmt-overload-large-exceed-counter
    2, //agc_lmt_overload_large_inc_steps *** adi,agc-lmt-overload-large-inc-steps
    10, //agc_lmt_overload_small_exceed_counter *** adi,agc-lmt-overload-small-exceed-counter
    5, //agc_outer_thresh_high *** adi,agc-outer-thresh-high
    2, //agc_outer_thresh_high_dec_steps *** adi,agc-outer-thresh-high-dec-steps
    18, //agc_outer_thresh_low *** adi,agc-outer-thresh-low
    2, //agc_outer_thresh_low_inc_steps *** adi,agc-outer-thresh-low-inc-steps
    1, //agc_attack_delay_extra_margin_us; *** adi,agc-attack-delay-extra-margin-us
    0, //agc_sync_for_gain_counter_enable *** adi,agc-sync-for-gain-counter-enable
    /* Fast AGC */
    64, //fagc_dec_pow_measuremnt_duration *** adi,fagc-dec-pow-measurement-duration
    260, //fagc_state_wait_time_ns *** adi,fagc-state-wait-time-ns
    /* Fast AGC - Low Power */
    0, //fagc_allow_agc_gain_increase *** adi,fagc-allow-agc-gain-increase-enable
    5, //fagc_lp_thresh_increment_time *** adi,fagc-lp-thresh-increment-time
    1, //fagc_lp_thresh_increment_steps *** adi,fagc-lp-thresh-increment-steps
    /* Fast AGC - Lock Level (Lock Level is set via slow AGC inner high threshold) */
    1, //fagc_lock_level_lmt_gain_increase_en *** adi,fagc-lock-level-lmt-gain-increase-enable
    5, //fagc_lock_level_gain_increase_upper_limit *** adi,fagc-lock-level-gain-increase-upper-limit
    /* Fast AGC - Peak Detectors and Final Settling */
    1, //fagc_lpf_final_settling_steps *** adi,fagc-lpf-final-settling-steps
    1, //fagc_lmt_final_settling_steps *** adi,fagc-lmt-final-settling-steps
    3, //fagc_final_overrange_count *** adi,fagc-final-overrange-count
    /* Fast AGC - Final Power Test */
    0, //fagc_gain_increase_after_gain_lock_en *** adi,fagc-gain-increase-after-gain-lock-enable
    /* Fast AGC - Unlocking the Gain */
    0, //fagc_gain_index_type_after_exit_rx_mode *** adi,fagc-gain-index-type-after-exit-rx-mode
    1, //fagc_use_last_lock_level_for_set_gain_en *** adi,fagc-use-last-lock-level-for-set-gain-enable
    1, //fagc_rst_gla_stronger_sig_thresh_exceeded_en *** adi,fagc-rst-gla-stronger-sig-thresh-exceeded-enable
    5, //fagc_optimized_gain_offset *** adi,fagc-optimized-gain-offset
    10, //fagc_rst_gla_stronger_sig_thresh_above_ll *** adi,fagc-rst-gla-stronger-sig-thresh-above-ll
    1, //fagc_rst_gla_engergy_lost_sig_thresh_exceeded_en *** adi,fagc-rst-gla-engergy-lost-sig-thresh-exceeded-enable
    1, //fagc_rst_gla_engergy_lost_goto_optim_gain_en *** adi,fagc-rst-gla-engergy-lost-goto-optim-gain-enable
    10, //fagc_rst_gla_engergy_lost_sig_thresh_below_ll *** adi,fagc-rst-gla-engergy-lost-sig-thresh-below-ll
    8, //fagc_energy_lost_stronger_sig_gain_lock_exit_cnt *** adi,fagc-energy-lost-stronger-sig-gain-lock-exit-cnt
    1, //fagc_rst_gla_large_adc_overload_en *** adi,fagc-rst-gla-large-adc-overload-enable
    1, //fagc_rst_gla_large_lmt_overload_en *** adi,fagc-rst-gla-large-lmt-overload-enable
    0, //fagc_rst_gla_en_agc_pulled_high_en *** adi,fagc-rst-gla-en-agc-pulled-high-enable
    0, //fagc_rst_gla_if_en_agc_pulled_high_mode *** adi,fagc-rst-gla-if-en-agc-pulled-high-mode
    64, //fagc_power_measurement_duration_in_state5 *** adi,fagc-power-measurement-duration-in-state5

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