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LTC 2185 level noise

Thread Summary

The user inquired about the noise level of the ADC LTC2185-16 bit at 122 MHz clock with <30 fs jitter, noting a noise level of approximately 5 LSB bits without an input signal. The support engineer confirmed that the expected RMS noise level, as shown in the datasheet, is around 3.4 LSB, which aligns with the user's observation. The user found this information sufficient and thanked the engineer.
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Category: Hardware
Product Number: LTC2185

Hello,

   I use ADC LTC2185-16 bit and 122 MHz clock  with jitter according datasheet < 30 fs. Front-end circuit for input signal is similar to recommended by datasheet LTC2185 for frequencies from 5 MHz to 150 MHz. Without input signal, ADC gives noise on level approximitly 5 LSB bits (without any filters). Is this noise level correct ?     

Thanks, Piotr.