Analog circuit time constant compensation method for a digital transmitter using an analog output

摘要

A process transmitter includes a circuit producing a plurality of digital values representing magnitudes for an analog signal and a filter receiving the plurality of digital values and producing a plurality of filtered digital values. Output analog circuitry in the process transmitter is configured to receive the filtered digital values and output an analog signal on a communication channel of the process transmitter. The output analog circuitry has a transfer function and the filter has a transfer function. The transfer function of the filter at least partially offsets the transfer function of the output analog circuitry.