Dear Sir/madam,
- Can I know, what is the bandwidth for this IC? What is the maximum frequency that we can input to the PGA281?
- Need your advice if following connection is alright?
2.1) I need a PGA281 to use for a FPGA’s ADC. Below are the schematic based on the PGA281EVM. Please, see schematic below
- As the PGA281 at the output generate a differential signal around VOCM, we need at the output of the PGA281 max differential voltage = ±0.5V with 0.5V common mode voltage.
- in this case, we cannot share the supply for ADC and PGA281 because the FPGA has the reference voltage internal (on-chip reference)
2.2) In another scenario, when DVDD = 2.5V and VSON= -2.5V? what are the thresholds values for low and high logic levels, how to control the IC in this case?
Best regards,
kpk