The present invention relates to a time division digital filter and multi-channel D / A converter circuit using the same data, more particularly, to a plurality of multipliers and an adder, sharing the digital signal of the channel using a digital filter to digitally filter the time division for converting the digital audio signal into an analog audio signal channel D / A converter circuit data. ; Mute part that affects the input signal of the present invention the time division multi-channel digital filter and a D / A converter circuit using the same data is the digital audio input in accordance with the digital audio interface, the need for distributing the channel , attenuating the noise component of the high-frequency region of the input digital audio signal / control and low-pass filtered by de-emphasis / low-pass filter made of a band-limited digital signal, the bandwidth of the signal is interpolated to increase rapidly as the sample rate constant multiple storage radar unit, the quantization noise (white noise), a digital sigma-delta conversion section and the demodulated digital signal to demodulate and switched to the high frequency region is switched to the high frequency area of the quantization noise to the output signal fed back to the input signal band is removed and the analog The technical features of the switch capacitor filter for converting a signal portion yirueojim. ; Thus, using the time-division digital filter of the present invention, and this channel D / A data converter circuit takes up a large area in an integrated device to share a multiplier and an adder block by block in the case of time-division digital filter to filter the plurality of digital signals and the digital signal for producing an integrated digital audio device as to convert the analog signal of the resolution reduces the size of the integrated device It can, have low power consumption advantages, and production cost of the integrated devices on the net increase in the number of die per wafer and the effect of such reduction being increased yield higher effective number of integrated devices.
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