SM5842APT
High-Class Audio Multi-functioDigital Filter
FEATURES
Functions
L/R 2-channel processing
8-times oversampling (interpolation)
≤ ±0.00002 dB passband ripple
≥ 117 dB stopband attenuation
Digital deemphasis
32/44.1/48 kHz sampling frequency (fs)
2-channel independent ON/OFF control
Soft muting
2-channel independent ON/OFF control
Input data format
2s complement, MSB ?rst
- LR alternating, 16/18/20/24-bit serial, trailing data
- LR alternating, 24-bit serial, leading data
- LR simultaneous, 24-bit serial, leading data
Output data format
2s complement, MSB ?rst, LR simultaneous
18/20/22/24-bit serial
BCKO burst (NPC format)
Dither round-up processing
ON (dither rounding)/OFF (normal rounding)
control
25-bit internal data length
Jitter-free functiofor correct operatioithe
presence of jitter betweethe system clock and
LRCI clock
ON (jitter-free mode)/OFF (sync mode) control
256fs/384fs system clock selectable
384fs
- 21.2 MHz maximum frequency (at maximum
fs = 55.2 kHz)
28-piplastic DIP
Filter Con?guration
Linear phase 3-stage FIR interpolatio?lter
169-tap 1st stage (fs to 2fs)
29-tap 2nd stage (2fs to 4fs)
17-tap 3rd stage (4fs to 8fs)
Deemphasis ?lter
- IIR ?lter con?guratiofor accurate gaiand
phase characteristics
26 × 24-bit parallel multiplier/32-bit accumulator
for high precision
Over?ow limiter built-in
APPLICATIONS
CD players
DAT players
PCM systems
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