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TC9470FN Datasheet

  • TC9470FN

  • ?-? Modulation DA Converter with Built-in 8-Times Oversampli...

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  • 20頁(yè)

  • TOSHIBA

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TC9470FN
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC9470FN
危-鈭?/div>
Modulation DA Converter with Built-in 8-Times Oversampling Digital Filter/Dynamic
Digital Bass Boost/Analog Filter
The TC9470FN is a second-order
危-鈭?/div>
modulation system
1-bit
DA converter incorporating an 8-times oversampling digital
filter, dynamic digital bass boost function for use with compressor
operations and an analog filter developed for digital audio
equipment.
Because the IC includes an analog filter, it can output a direct
analog waveform, thus reducing the size and cost of the DA
converter.
Features
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Built-in 8-times oversampling digital filter
Low-voltage operations (2.4 V) possible
Built-in digital de-emphasis filter
Built-in dynamic digital bass boost function
In serial control mode, output amplitude can be set in 4096 steps of resolution using microcontroller commands
In parallel control mode, soft mute can be set for the output signal in 64 steps in 23 ms
Built-in LR common digital zero detection output circuit
Sampling frequency: 44.1 kHz
Supports 384 fs/256 fs (automatic switching)
DA converter oversampling ratio (OSR):
192
fs (at 384 fs)
Stereo/monaural output selection possible
Built-in third-order analog filter
The digital filter and DA converter characteristics are shown on the next page
Weight: 0.14 g (typ.)
Digital Filter
Digital Filter
Standard operation
8 fs
Passband Ripple
鹵0.11dB
Transient
Bandwidth
20 k to 24.1 kHz
Attenuation
鈭?6dB
or less
DA Converter
(V
DD
= 2.7 V)
OSR
Standard operation
192 fs
Noise Distortion
鈭?2dB
(typ.)
S/N Ratio
90dB (typ.)
1
2002-02-27

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