THS10064: Schematic diagram for C6742 and THS10064

Hi Stan,

Is this an existing project or is it a new design?  I ask because the THS10064 is 25 years old at this point and I'm not sure how much longer it will be available.

its a new design 

do you have any recommendation for parallel ADC ?

We've not have many new designs using a parallel interface lately.  The THS10064 has internal 1.5 and 3.5V references, I would suggest that you use those features of the device.

I m looking at SLAU042B EVM manual, pg 23, where is the circuit that provide the 1.5 and 3.5v Vref ? Please advise. 

We are gona use external Vref.... does it mean we need to provide 1.5v and 3.5v supply into THS10064 ?

The SLAU042 document is using the internal reference of the device.  If you plan to use an external reference, then yes, you must provide that.

ok thanks Tom, could you recommend circuit that churn out 1.5v and 3.5? Any IC chip like REF5025 .... please reply soon.. 

Hi Tom, could you consult your TI analog expert who can churn out the circuit that provide 1.5 and 3.5 v... we need this urgently..

Something like this would work:

thanks for the reply, i see 2 potentiometer R2 & R4 do you think its sensible to implement 2 potentiometer in a mature PCBA for wafer machine? please advise.. 

It should be OK, but you could always use fixed resistors as well if you don't want to use potentiometers.  R1 of 3.83K and R2 of 1.65K for instance will get you 1.5V from the 5V reference.

ok thats for 1.5v what  about the 3.5v ?

Please advise the BOM list for this circuit. 

Hi Stan,

For 3.5V, it would be the same resistor values, just swap their position in the divider circuit.

Any BOM list to share for this REF5050 ?