SM5879AV Datasheet, PDF (1/20 Pages) Nippon Precision Circuits Inc – 3rd-order , 2-channel D/A Converter

NIPPON PRECISION CIRCUITS INC.
SM5879AV
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)
DVDD ¹
TEST
P/M
AVDDR
RO
AVSSR
TO1
AVSSL
LO
AVDDL
MUTEO
DVSS 12
24 LRCI
BCKI
DI
BB2 / BBON
BB1 / MDT
DEEM / MCK
MUTE / MLEN
XVDD
XTO
XTI
XVSS
13 CKO
PACKAGE DIMENSIONS
Unit: mm
24-pin VSOP
7.8 ± 0.1
0.15
−+
0.05
0.02
0.65
0.22
+0.1
−0.05
0 to 10
ORDERING INFOMATION
Device
SM5879AV
Package
24pin VSOP
NIPPON PRECISION CIRCUITS—1