Hello PTD Please refer to Figure 59 and Table 1 in the LMH3401 datasheet. Since the ADC12DJ3200 has an effective differential input impedance Rload of 100 ohms, the Ro value should be set to 40 ohms. Since the ADC input common mode voltage is 0V, the power supplies for the LMH3401 should be centered around this voltage at +2.5V/-2.5V. In this configuration the output impedance of the amplifier along with the Ro matching resistance will limit the voltage and current at the ADC inputs to safe levels. I hope this is helpful. Best regards, Jim B
↧