Hi, Here are some suggestions: 1. Add 2.5k resistor to ground on each LM96551 output pin, as shown below. The internal clamping diode(s) on each LM96551 output (see Block Diagram image in the datasheet) work better if a DC path to ground exists. 2. Add a similar resistor to each LM96530 output to ground in order to alleviate any DC offset that might be created due to the mismatch of the internal diode bridge (see Block diagram image in the datasheet) leakage current(s): You can see these same resistors incorporated in the TX-SDK-1 EVM zip file schematic (where images above come from): Also, please make sure that you AC couple the LM96530 output(s) to the AFE5803 (if not already?). Regards, Hooman
↧