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THS3217: THS3217 + THS3091 solution for DAC5681

Part Number: THS3217
Other Parts Discussed in Thread: THS3091, THS3491


Please help to answer on customer query on previous e2e thread -


Hi Rohit,

We thank for your support. We are looking for the similar application note from TI.

We will proceed with the Channel-2 Configuration (THS3217 + 2 X THS3091) configuration, which can able to generate upto 50 MHZ output frequency.

1. As per your suggestion, in order to block the CM output of DAC5681, we will use DC blocking capacitors 100 nF each on OUTA+ and OUTA- outputs of DAC5681. then we will feed this input to the 500 MHZ Low pass filter.

2. As per TIDA-00684, the DAC is capable of 30 mA full scale output, where as DAC5681 is 20 mA full scale capable. Any precauations or suggestions from your end to use DAC5681 along with THS3217 + 2 X THS3091 ?

3. The Power supply for 2 X THS3091 is shown EXTV in the application and is fed from outside. We are planning to use +5 V and -5V supplies on our board , which will power THS3217 and 2 X THS3091. Any care and precautions to be taken to use this configuration?