Precision Tone Decoder

General Description

Detects the presence of a single tone at a specified centre frequency. Features 16-bit data samples, programmable tone frequency, adjustable detection bandwidth and a high performance Digital Down Converter. Ideal as a building block in FSK / OOK / ASK demodulators.

Key Design Features

- 16-bit signed input and output data samples
- Samples may be either complex or real
- Includes our precision 16-bit DDS component
- Narrow or wide detection bandwidths
- Programmable tone centre frequency
- Choice of low pass filter responses
- Simple connectivity to an external ADC
- Typical FPGA and SoC sample rates of 200 MHz+

Applications

- Touch tone decoding (e.g DTMF tones)
- Precision frequency monitoring and control
- Complex Digital Down Conversion
- Security systems and remote control units
- FSK / OOK / ASK demodulation

View datasheet

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