We have some test with TDC1000 working at 1Mhz and it works fine. Now we are shifting to 4Mhz and see problems in the receive side. According to the data sheet, the bandwidth of the PGA amplifier at gains lower than 12dB 10Mhz or more. However using a signal generator to inject a signal at the PGA in pin and measure the levels at the output (no filters in the circuit) it starts roll off already at 1Mhz and at 4Mhz there is no gain left (gain set to 12dB). So what is causing this problem?
Would you be in the position to elaborate on what needs to be set up in the TCD1000 when moving from 1MHz transducers to 4MHz transducers? Or what we might be not doing right?
