JVC XP-A1010TN Service Manual page 30

XP-A1010TN
(1) General:
MN86081 is a 16-bit A/D converter with a built in dig-
ital filter which has been developed for PCM digital
audio equipment. It converts an analog signal to a
16-bit digital signal using the Multi-Stage Noise Shap-
ing (MASH) system (see Note). The built-in digital
filter has allowed the front-end analog filter of the
A/D converter to be more simplified than a conven-
equipment for dynamic address translation (DAT) to
achieve large-scale economization and small size.
Note: The MASH is an over-sampling A/D conversion
technique to enable high S/N ratio by connecting 1-bit
quantizers in multiple stages over three stages without a
trimming process.
*MASH was designed by Nippon Telephone and Telegraph
Co. (NTT).
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
*MASH: Registered trademark has been applied for.
(2) Internal block diagram
DSQ ° Ibit Delta Sigma Quontizer
3rd DSQ
Ist DSQ(+)
ist DSQ(-)
A/D converter
(+) 2nd DSO
soiey
SUMMING LOGIC
a
CLOCK
EXCLK (8)
GENERATOR
Digital filter
()CLR
OFFSET
CANCELLOR
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