• RE: LTC1966 won't work

    I've been 'toying' with these for months.  Got some working fine.  The latest are 3 together, same p.s.  Pulling my hair out on these.  Disconnected input from IN1.  IN2 is connected to 1/2 Vcc.  Vcc off 5.59 v, so IN2 is measured to be 2.8v.  There…

  • LTC1966 Malfunctioning

    I have simulated using LTspiceXVII the LTC1966 RMS to DC converter for my application. But when tried to implement in reality it won't work in Lab.  Below is the screen capture of how i tried to implement.

    In reality when as soon as i power the IC…

  • LTC1966 Single Supply RMS Current Measurement

    Hi,

    On page 38 of the datasheet (https://www.analog.com/media/en/technical-documentation/data-sheets/1966fb.pdf), should the ground be tied to AC ground?

    I have a SSR on a PCB that switches on/off the line voltage going to an AC motor. Neutral and ground…

  • ISSUE WITH LTC1966 RMS TO DC CONVERTER

    I have simulated using LTspiceXVII the LTC1966 RMS to DC converter for my application. But when tried to implement in reality it won't work in Lab.  Below is the screen capture of how i tried to implement.

    In reality when as soon as i power the IC…

  • RE: Using differential Amplifier on LTC1968, and the input voltage changes; please help

    Hi Shurp:  Yes, this happens simply because the LTC1966/7/8 output is not buffered.  The data sheet spec for output impedance of LTC1968 is 12.5k Ohms typically.   So you need to buffer the outputs before doing the difference amplifier.  Or, you could use…

  • RE: RMS Current Control Based on LTC1968

    Hi aliaykan:  The LTC6226 seems like overkill on the bandwidth compared to the LTC1968 and LT1782.  Also, it has high bias current which will compromise the accuracy of the LTC1968.  For a gain of 2, I would recommend another LT1782.

    Regarding the speed…

  • LTC 1966 not performing properly. Will not go near 0v output

    This is an rms to dc converter.  Got some working fine. The latest are three together, same p.s.

    Pulling my hair out on these.

    Disconnected input from IN1. IN2 is connected to 1/2 Vcc. Vcc off 5.59 v, so IN2 is measured to be 2.8v. There is always some…

  • About the temperature range of LTC1966C

    Hello

    Checking the temperature range of ABSOLUTE MAXIM RATING on page 2 of the data sheet states that it is -40 ° C to 85 ° C.


    However, in ORDER INFORMATION, it is 0 to 70 ° C.

    Which notation is correct?

    I would be grateful if you could reply…

  • RE: High order low pass filter on the output of LTC1968?

    Hi shurp:  Yes the LTC1966/7/8 family is switched-cap so there is output noise and glitching.  You can increase the output C_ave as much as you want (and don't ever omit it).  Also make sure the layout goes onto and off the C_ave; don't connect C_ave…

  • RE: LT1966 LT SPICE SIMULATION

    Hi aiedb:

    In your circuit, IN1 is being driven negative while the LTC1966 does not have a negative supply.  In order to use LTC1966 on a single supply, use the circuit shown in the datasheet, Figure 9b.

    Also, with a 250mVpk (500mVpp) sinusoid, the correct…