• Spice model for ADG1207

    Hi,

    I found ADG1207 suitable for my application. In order to verify the functionality of the entire DAS I need the spice model for the part ADG1207.

    Please provide the same..

    Thanks,

    Jebas.

  • RE: Multiplexer - Deriving Cds & Switch OFF resistance value from OFFisolation Vs frequency curve

    Hi Eric,

    Thanks for your response. The discussion with You and Joe is much useful.

    I have another one doubt to be cleared.

    The first figure taken from ADG407 data-sheet.

    Whereas, the second figure taken from ADG1207 data-sheet.

    While comparing…

  • REGARDING CROSS-TALK OF ADG1207 LOW CAPACITANCE MUX

    Hi,

    ABOUT THE HARDWARE IN BRIEF

    I have designed a fully universal 8 channel differential Analog Input Module (Thermocouple,RTD,mA,0-10VDC). All the channels are non-isolated. At the input of each channel there is a common-mode(cut-off = 1kHz)and differential…

  • RE: Whats the best Inamp for high speed current sensing?

    Hi Ian,

    Muxes like the ADG1407 have to use larger devices to get the low R_on. Therefore they end up with higher capacitance. In-amps like the AD8253 or AD8221 have very high input resistance, so the on-resistance of the mux in series with the in-amp…

  • RE: Precision Opamp Selection for AAF (2nd order Sallen-key)- 24 channels 16 bit DAS

    Jebas,

      A couple of things to consider....

    --  Every year ADC prices come down, so I would consider  using three ADCs or more.  Although the ADG1207 is a low capacitance mux, it still has finite on resistance and capacitance.  To get to 16 bits of accuracy…

  • AAF suffer with reduced CMRR because of Passives Tolerances

    Hi,

    I am working on differential Multi-channel high precision DAS. I have chosen the following architectures.

    Spec: CMRR -  >=50dB @ 0 to 1Khz

             Gain Error - 0.02%

    Architecture 1:

    AAF --> MUX --> IA --> Post amplifiers --> ADC

    But…

  • Regarding "Earthing of isolated circuits" in measurement applications like temperature measurement using thermocouple.

    Respected Sir,

    I am on the verge of completion of an 8-channel analog input module design. Each channel can measure RTD Pt-100, Thermocouple (J,K,R,S,T,B,N),0-10VDC and 0-20mA input types. A 24VDC external supply can power this module. I have used an…

  • Improving the precision of ADC using calibration

    Hi,

     

    I am designing a multi-channel DAS. The specificatios or as given below;

     

    Total channels : 24

    Analog input signal range : +/- 10V

    Resolution of ADC : 16 bit

    Gain error : <= 0.02% of FSR i.e <=4mV

    Offset voltage : +/-1.2mV

    Temperature…

  • TAGS LIST: Switches/Multiplexers

    AD8104
    AD8105
    AD8106
    AD8107
    AD8108
    AD8109
    AD8110
    AD8111
    AD8112
    AD8113
    AD8114
    AD8115
    AD8116
    AD8117
    AD8118
    AD8175
    AD8176
    AD8177
    AD8178
    AD8186
    ADV3200
    ADV3201
    ADV3202
    ADV3203
    ADV3205
    ADV3224
    ADV3225