Controlling ADC conversion of LTC2145-12

Question

Dear Sir 
 I am desiging the circuits using LTC2145-12 ADC. to avoid the noise conditins around ADC, I would like to start ad 
 conversion when input analog signal meets over the threshold level. 
 Data sheets saying that ENC clocking shall be done all the time , So AD conversion will not stop . 
 So How can I control the AD conversion like AD9826?

ADIApproved · Accepted Answer

The LTC2144-12 must operate with a continuous clock If the clock rate drops below 1Msps the sample capacitors start to discharge and the conversion is in accurate, You can put the part into nap mode when you aren't using it, but that requires 100 clock cycles before the data is accurate.)

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Controlling ADC conversion of LTC2145-12