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ad5940 impedance measurement: how to get (stream) impedance variation values depending on the frequency sweep

Category: Software
Product Number: ad5940

I would like to know if it is possible to get the variation of the impedance magnitude and phase during the frequency sweep to plot the graph instead of its the direct value.

Thanks. 

  • Hi,

    We will look into this, I'll contact the product owner and get back to you.

    Regards,

    Andrei

  • Hi,

     Sensorpal GUI gives plot of impedance with frequency.

    CheckPoint25 06:05 AM Measurement Parameters Settings: Body Impedance
    Frequency (Hz) Magnitude (Ω) Start Frequency 10000
    10000 100.8585434 Points 100
    10307.22363 100.8561325 Amplitude 600
    10623.88672 100.8990479 Enable 1
    10950.27832 100.8831482 Stop Frequency 200000
    11286.69727 100.8883743 Logarithmic 1
    11633.45117 100.8795166 Power Mode High Power
    11990.85938 100.8969955 Transimpedance Amplifier Capacitance 16
    12359.24707 100.8831482 Sample Rate 20
    12738.95313 100.8886185 Internal RTIA Selection 1K
    13130.32422 100.8808517 Calibration Resistor 10000
    13533.71973 100.8851395 Filter Level Level 1.1
    13949.50781 100.8875885 Hanning Window 1
    14378.07031 100.8825073 DFT Number 8192
    14819.7998 100.8866425 PGA Gain Select GNPGA_1
    15275.09961 100.9343109
    15744.38672 100.8898849
    16228.09277 100.9110413
    16726.6582 100.9115143
    17240.54102 100.9398499
    17770.21289 100.919899
    18316.15625 100.914856
    18878.87305 100.939621
    19458.87695 100.9339828
    20056.70117 100.9266891
    20672.89063 100.9382019
    21308.01172 100.9574966
    21962.64453 100.9616776
    22637.39063 100.9430771
    23332.86523 100.9823837
    24049.70703 100.9778061
    24788.57227 100.9820023
    25550.13672 100.9664307
    26335.09766 100.9510269
    27144.17578 100.9513855
    27978.11133 101.0034027
    28837.66602 100.9808197
    29723.62891 100.9937897
    30636.80859 101.0458603
    31578.04492 101.0522919
    32548.19922 101.0042191
    33548.16016 101.0629349
    34578.83984 101.0205841
    35641.18359 101.0593872
    36736.16797 101.0322952
    37864.78906 101.0781403
    39028.08594 101.0814819
    40227.125 101.1005173
    41463 101.092598
    42736.83984 101.0749893
    44049.82031 101.0949402
    45403.13672 101.0914612
    46798.03125 101.1386032
    48235.77734 101.1604385
    49717.69922 101.1374283
    51245.14453 101.1450653
    52819.51953 101.1317673
    54442.26172 101.1427536
    56114.85938 101.1637497
    57838.84375 101.2148056
    59615.78906 101.2258835
    61447.33203 101.1751709
    63335.14063 101.2382507
    65280.94922 101.244751
    67286.53906 101.261116
    69353.74219 101.2356415
    71484.45313 101.2423401
    73680.63281 101.2751083
    75944.27344 101.3211823
    78277.46875 101.2678833
    80682.33594 101.2915421
    83161.09375 101.3289948
    85716.00781 101.2806931
    88349.40625 101.3301392
    91063.71094 101.3647614
    93861.40625 101.3444138
    96745.05469 101.3736267
    99717.29688 101.4066315
    102780.8516 101.357605
    105938.5313 101.4638748
    109193.2188 101.4345703
    112547.8906 101.4354858
    116005.6328 101.5103836
    119569.6094 101.4800644
    123243.0703 101.5315704
    127029.3984 101.5089645
    130932.0469 101.5347977
    134954.5938 101.5899353
    139100.7188 101.6440201
    143374.2344 101.5968781
    147779.0313 101.6330566
    152319.1563 101.7390823
    156998.7656 101.6893768
    161822.1563 101.7725296
    166793.7188 101.7680893
    171918.0313 101.9319687
    177199.7656 101.9727249
    182643.7656 101.9156952
    188255.0156 101.9144516
  • Yes but I'm using my own MCU (NXP CORTEX M) board and I need to get it myself. I don't know which program flashes the PC SW. Do you have an example of this program, please?