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The circuit consists of an i and q detector driven by a voltage controlled oscillator which determines the center frequency of the decoder. The lmc567 device is a low- power, general- purpose lmcmos tone decoder which is functionally similar to the industry standard lm567. Lm567x tone decoder datasheet ( rev. Lm567 datasheet ( pdf) - national semiconductor ( ti) preview pdf download html lm567 datasheet ( pdf) - national semiconductor ( ti) [ old version datasheet] texas instruments acquired national semiconductor. F) pdf | html product details find other real- time clocks ( rtcs) & timers technical documentation = top documentation for this product selected by ti design & development for additional terms or required resources, click any title below to view the detail page where available. The lm567 and lm567c are general purpose tone decoders designed to provide a saturated transistor switch to ground when an input signal is present within the passband. The device consists of a twice frequency voltage- controlled oscillator ( vco) and quadrature dividers which establish the reference signals for phase and amplitude detectors.
The circuit consists of an i and q detector driven by a voltage controlled oscillator which 500 khz 2 applications touch tone decoding precision oscillator. Description tone decoder lm567 datasheet ( html) - national semiconductor ( ti) similar part no. - lm567 more results similar description - lm567. Lm567/ lm567c tone decoder schematic diagramtypical performance characteristics typical applications component values ( typ) r1 6. 2 mfd 6v c4 250 mfd 6v touch- tone decoderac test circuit lm567c mdc mwc tone decoderdie layout ( c - step) die/ wafer characteristics.
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