1. Introduction：

The IP is a precision tone decoder with the capacity to support either real or complex data samples. Samples are first mixed-down to baseband before subsequent filtering and tone detection.

The centre frequency of the tone is fully programmable and is generated by a local oscillator (DDS).  The DDS has an SFDR of better than 80 dBs (with phase dithering) and a theoretical SNR of approximately 100 dBs.

After down-conversion, 2 paths are filtered to remove components above the tone of interest.  The characteristics of these filters may be changed depending on the desired detection bandwidth and
response time.

Finally, a power function is used to compute the relative magnitude of the signal after filtering.

Application

• Precision frequency monitoring and control
• FSK / OOK / ASK demodulation
• Touch tone decoding (e.g. DTMF tones)
• Complex digital down conversion

 

2. License Price：

By Quotes

Multiple License : NO

3. Clock Rate：

200 MHz

4. Logic Gate Count：

None

5. Technology：

None

6. Version：

1.0