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Maximum input voltage for single ended input on LTC6419

Thread Summary

The user inquired about the differential input voltage limit of the LTC6419, noting that back-to-back diodes limit it to 1.4V. The support engineer confirmed that the device is guaranteed to function with a maximum differential input voltage of 1.4V, and the diodes are for protection. This means a single-ended signal converted to differential should not exceed 1.4V differentially to ensure proper operation.
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Category: Hardware
Product Number: LTC6419

There is a note in LTC6419 datasheet, mentioing back-to-back diodes between two input pins, limiting differnetial input voltage to 1.4V. If using a single ended signal and converting it to differtial using the LTC6419, does it mean that the input cannot exceed 1.4V wrt Gnd. If yes, this limits the input voltage to a very small value for a unity gain implementation. Is this understanding correct?

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