Σ
DECO SM5865CM
NIPPON PRECISION CIRCUITS INC.
D/A Converter for Digital Audio
OVERVIEW
The SM5865CM is a 24-bit input D/A converter LSI
for high-quality digital audio equipment. It com-
prises newly developed DEM (dynamic element
matching) circuits, 3rd-order
Σ∆
noise shaper and
31-level quantizer to realize super low total har-
monic distortion and wide dynamic range. Also, the
device is widely reduced residual quantization noise
up to high-frequency bandwidth in the audio band so
the order of the required final-stage analog lowpass
filter can be reduced, making it ideal for application
with high-frequency sampling format. The output
stage employs differential current outputs for high-
accuracy analog signals, with appropriate lowpass
filtering of the output signal. This device can be used
in combination with an 8-times oversampling digital
filter of SM5847AF and others like that for the com-
patibility with 192kHz sampling format.
PINOUT
(Top view)
DVSS
DI
BCKI
WCKI
IWSL
RSTN
TSTN
TO
DVDD
CKI
CKDVN
CVSS
1
24
AVSSA
RA
IOUTA
VBA
N.C.
AVDDA
AVDDB
RB
IOUTB
VBB
N.C.
S M 5 8 6 5 CM
12
13
FEATURES
I
I
AVSSB
I
I
I
I
I
ORDERING INFORMATION
Device
SM5865CM
Package
24-pin SSOP
0.10 0.10
0.8
0.36 0.10
0.10
0.12
M
10.05 0.20
10.20 0.30
0.15
−
0.05
+
0.10
5.40 0.20
7.80 0.30
+0.20
1.90
−0.10
1.80
Mono-channel D/A converter LSI
High performance
• 0.00030 % (–110.5dB) typ. THD + N
• 117 dB typ. Dynamic range
• 120 dB typ. S/N
Input interface
• 20 or 24-bit word length
• MSB first, right-justified format
• 8 or 4 times oversampling at fs = 16/32/44.1/48/
88.2/96/176.4/192 kHz
System clock frequency
• 192/256/384/512/768/1024 fs
Single 5 V operating supply voltage
24-pin SSOP package
Molybdenum-gate CMOS process
PACKAGE DIMENSIONS
(Unit: mm)
Weight: 0.23g
24-pin SSOP
0.50 0.20
0 10
NIPPON PRECISION CIRCUITS—1
NPC [ NIPPON PRECISION CIRCUITS INC ]
