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LT1819 is supplied by +-5V when it works with LT2310 as ADC drivers ?

the first question:In the reference SCH DC2425A,LT1819 is supplied by +6/-6v. Is it ok if the chip is supplied by +5/-5V? In the datasheet, it says Specifi ed at ±5V, Single 5V Supplies, why it supplied by +6/-6V?

the second question, the following is my design which I modify according to DC2425A.Can you help me to check is it right?

In my design, I use two single ADC, is it ok if I use one  Precision reference voltage source to supply the pin REFOUT of two ADCS?

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  • Hi GlenBresebois: The Vcm of the LT1819 in the datasheet is ±4.2V when the VS = ±5V. Is it right  -4.2V<VIN+<4.2V and -4.2V<VIN-<4.2V?

    And the Vcm is displayed in the following picture  when the VS = 5V,0V.Is it right  0.8V<VIN+<4.2V and 0.8V<VIN-<4.2V?

    I don't understand what's the mean of the positive and the negative in the brackets.

Reply
  • Hi GlenBresebois: The Vcm of the LT1819 in the datasheet is ±4.2V when the VS = ±5V. Is it right  -4.2V<VIN+<4.2V and -4.2V<VIN-<4.2V?

    And the Vcm is displayed in the following picture  when the VS = 5V,0V.Is it right  0.8V<VIN+<4.2V and 0.8V<VIN-<4.2V?

    I don't understand what's the mean of the positive and the negative in the brackets.

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