• ADC LTC2387-18 SNR test condition

    I have some questions about the SNR test of this LTC2387-18.
    How to obtain a low-noise sinusoidal signal to test the performance of this ADC? 
    Or which model of the signal generator tested in the data sheet  LTC2387-18: 18-Bit, 15Msps SAR ADC Data …

  • LTC2387-18 clock problem

    Hi, I've attached a picture of my setup for the LTC2387-18 SAR ADC. My setup is the exact same as in this video (they show it at 2:22): 

    The only difference is my signal generator but I don't believe that is a problem because my oscilloscope seems to…

  • LTC2387-18 ADC Input Driver - Fully Differential Amp v's Two Unity Gain Buffers

    How can I quickly check if there is a difference between using a fully differential amplifier or two unity gain buffers as the ADC input Driver circuit for the LTC2387-18?

  • LTC2387-18 Test Pattern & communication

    Hi All,

    I am trying to receive test pattern from LTC2387-18 and I am a bit confused with what I see on the oscilloscope. I send 9.7 MHz CNV (green) signal to the ADC from the clock distributor. After I sent CNV, I wait for 74 ns and I start generating ADC…

  • RE: LTC2387-18 Shift Register Reset

    After power powering up or exiting power-down, the next two conversions produce invalid data. Subsequent conversions will produce valid data as long as the time between conversions meets the tcyc specification. There is no procedure necessary to reset…

  • HMC900LP5E compatibilty with LTC2387-18


    As datasheet says HMC900LP5E has 2vppd output and LTC2387 has maximum 4.096V diff-input. i want to use the whole range of LTC2387. Is there any way i Can use this low pass filter in front of this ADC (ltc2387) through which the full scale range of…

  • LTC2387 returns DCO clock but no conversion data

    I have this card I (re)designed and the LTC2387-18 worked fine for a while; then it ceased to return any data with the DCO in either normal or testpat modes; the power supplies, analog inputs, timing and logic levels verified within specs; ONE LANE operation…

  • LTC2387 Sample Clock Frequency and Layout


    I am using the LTC2387-18 in an application and noticed your demo setup divides a higher frequency clock down to get 15.36 MHz. This is above the 15 MHz that the datasheet indicates as maximum. Is the 15.36 MHz fine to use? There is a much better…

  • LTC2387 input protection


    I am desining a data acquisition system with LTC2387. I am worried about the ADCs' inputs.

    In the datasheet the absolute max. value for the IN+ and IN- pin are specified as VDD + 0.3V which is 5.3V. In my design the front end can swing up to…

  • Clocking LTC2387 and jitter performance.


    I am developing a data acquisition board with LTC2387-16. I read the datasheet and looked at the reference design provided in the ADC's webpage. 

    I know that, to achieve the desired SNR performance you have to have a really clean clock(less…