Using the Test DAC on the ADF702x to Implement Functions Such as Analog FM DEMOD, SNR Measurement, FEC Decoding, and PSK/4FSK Demodulation
نویسنده
چکیده
The ADF7020 and ADF7020-1 provide access to the FSK demodulator output to facilitate external measurement of functions such as demodulator output SNR, receiver eyediagram analysis, and analog FM demodulation. For these measurements, access to the digital FSK demodulator output is achieved by using an on-chip ΣΔ (SD) modulator in conjunction with an external, passive RC network. This network provides an analog output signal (test DAC output) to replicate the output of the on-chip digital FSK demodulator.
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تاریخ انتشار 2006