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SM5879 データシート(PDF) 1 Page - Nippon Precision Circuits Inc

部品番号 SM5879
部品情報  3rd-order , 2-channel D/A Converter
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メーカー  NPC [Nippon Precision Circuits Inc]
ホームページ  http://www.npc.co.jp/en
Logo NPC - Nippon Precision Circuits Inc

SM5879 データシート(HTML) 1 Page - Nippon Precision Circuits Inc

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SM5879AV
NIPPON PRECISION CIRCUITS—1
NIPPON PRECISION CIRCUITS INC.
3rd-order
Σ∆, 2-channel D/A Converter
OVERVIEW
The SM5879AV is a 3rd-order
∑∆, two-channel D/A
convertor LSI for digital audio reproduction equip-
ment. This device incorporate NPC's molybdenum-
gate CMOS technology and incorporates an 8-times
oversampling digital filter and analog 3rd-order
∑∆
post-converter low-pass filters.
The SM5879AV also incorporates built-in digital
bass boost and deemphasis filters, an attenuator, and
soft mute function. Low-voltage operation is also
supported.
This device features a compact 24-pin VSOP pack-
age and a D/A converter that provides both compact
size and low power consumption.
FEATURES
s
2.7 to 3.3 V operating supply voltage
s
44.1 kHz sampling frequency
s
16.9344 MHz (384fs) system clock
s
Built-in crystal oscillator circuit
s
16-bit, MSB first, rear-packed serial data input
format (
≤ 64 fs bit clock)
s
8-times oversampling digital filter
• 32 dB stopband attenuation
• +0.05 to -0.05 dB passband ripple
s
Deemphasis filter operation
• 36 dB stopband attenuation
• -0.09 to +0.23 dB deviation from ideal deem-
phasis filter characteristics
s
Attenuator
• 7-bit attenuator (128 steps) set by microcontrol-
ler
s
Soft mute function set by parallel setting
• (approximately 1024/fs total muting time)
s
Mono setting
• Left or right channel mono selectable by micro-
controller
s
Built-in infinity-zero detection circuit
s
∑∆, two-channel D/A converter
• 3rd-order noise shaper
• 32fs oversampling
s
Built-in 3rd-order post-converter low-pass filters
s
24-pin VSOP package
s
Molybdenum-gate CMOS process
PINOUT (TOP VIEW)
PACKAGE DIMENSIONS
Unit: mm
24-pin VSOP
ORDERING INFOMATION
Device
Package
SM5879AV
24pin VSOP
DVDD
TEST
P / M
AVDDR
RO
AVSSR
TO1
LRCI
BCKI
DI
BB2 / BBON
BB1 / MDT
DEEM / MCK
XVDD
AVSSL
XTO
LO
AVDDL
MUTEO
XVSS
CKO
1
12
13
24
DVSS
XTI
MUTE / MLEN
0.65
7.8
± 0.1
0 to 10
+0.1
0.22 −0.05
0.15
− 0.02
+ 0.05


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