• RE: Driving LTC1968 Fully Differential

    The differential input of the LTC1968 can be driven by a differential amplifier. Use a series 50 ohm resistor at each output driving a differential capacitor so that 1/ ( 2 pi 100 C) is the maximum input signal bandwidth (the 1% error BW of the LTC1968…

  • LTC1968 and AC coupled input

    I am simulating the LTC1968 with an AC coupled input.

    When I run a transient simulation with external DC voltages at 0 or V2 = 0 initial condition (see schematic), I see that V2 node takes tens of seconds to reach 2.5 V. As a consequence, the output of…

  • RE: RMS Detection is Frequency Dependent?

    This is not my usual beat, but if I may jump in, I think the two parts mentioned are not spec'd for frequencies below 10MHz in the case of AD5904 and 100MHz for ADL5511 and thus might not function well down there. Although both datasheets say "DC to 6…

  • RE: HELP IC RMS TO DC

    Thanks for the tag, FormerMember!

    Hi David!

    I am *actually* not Jim Staley, the signal conditioning applications engineering legend, I'm James Staley the industrial power systems guy. Confusing, I know... It was easy to tell us apart because Jim…

  • RE: AD8436: several questions about deployment

    Hello EVC,

    1. The AD8436 error does vary with input level. These types of rms-dc are based on a log-antilog approach, which is constrained by the supply voltage and input level. The 300mV for this part is the test voltage as you noted above.

    2. The…