JVC XP-A1000BK - Comb-Filter

XP-A1000BK
@ MN86081 (IC407, 408) ........ A/D CONVERTER (MASH-SYSTEM)
(1) General:
MN86081 is a 16-bit A/D converter with a built in dig- equipment for dynamic address translation (DAT) to
ital filter which has been developed for PCM digital achieve large-scale economization and small size.
audio equipment. It converts an analog signal to a Note: The MASH i ; F
Sea : ; = : : SH is an over-sampling A/D conversion
16-bit digital signal using the Multi-Stage Noise Shap- technique to enable high S/N ratio by connecting 1-bit
ing (MASH) system (see Note). The built-in digital quantizers in multiple stages over three stages without a
filter has allowed the front-end analog filter of the trimming process.
*MASH was designed by Nippon Telephone and Telegraph
Co. (NTT).
*MASH: Registered trademark has been applied for.
A/D converter to be more simplified than a conven-
tional standard one, consequently, it can reduce the
total power consumption of the entire A/D conversion
system. The MN86081 can be used in digital AV
(2) Internal block diagram
Ist DSQ(+)
Ain (2
Ist OSQ(-)
A/D converter
nay
CLOCK
DSQ : Ibit Delta Sigma Quontizer
EXCLK (8)
GENERATOR
FIR 2
COMB-FILTER a LOW-PASS FILTER }
Digltal filter
OFFSET
CANCELLOR
@)
OFCLR LR-POL I-E LR-CLK B-CLX
1-30 (No. 20062)