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LTC 2440 Interfacing : Help!

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ex4

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ltc2440

I've got 24bit ADC chip LTC2440 from Linear in 16 pin SSOP pckage. After reading the datasheet, i build the circuit with ATMEGA16 and SHIFTIN to get the data. But I got strange data and it's not represent the data expected?
ANybody can gave me some advice?
 

vsgiri

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If you could put up the schematic, it would be easier to answer.
Giri
 

eng_ahmed22

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chek the reference voltages, may be they are not correct
 

ex4

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This is the circuits. CS I held low (grounded), SDI I held high (VCC), So I need only to poll the SDO pin and wait it to go low
 

ex4

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according to the PDF, the reference voltage is from 0,1V - VCC so it doesn't makes a matter :D
 

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