SM5865AM
NIPPON PRECISION CIRCUITS INC.
D/A Converter
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BCKI
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RSTN
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The SM5865AM is a 24-bit input D/A converter for
high-quality digital audio equipment. It comprises
newly developed DEM (dynamic element matching)
circuits, 3rd-order
Σ∆
noise shaper and 23-level
quantizer to control wide-band residual quantization
noise in the signal band, making it ideal for applica-
tion with high-frequency sampling formats. Also, the
order of the required final-stage analog lowpass filter
can be reduced, compared to filters for available
devices, enhancing output tone quality. The output
stage employs complementary outputs for high-accu-
racy analog signals, with appropriate lowpass filter-
ing of the output signal.
A single SM5865AM IC can be used in combination
with an 8-times oversampling digital filter for con-
version for a single audio channel.
(Top view)
DVDD
CKI
CKDVN
CVSS
lim
Package
0.8
FEATURES
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pre
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Single-channel D/A converter built-in
High performance
(120 dB signal-to-noise ratio)
(0.001% total harmonic distortion and noise)
(110 dB dynamic range)
Σ∆
D/A converter
• 3rd-order noise shaper
• 23-level quantizer
Input data format
• 20 or 24-bit word length
• MSB first, right-justified format
• 8 or 4 times oversampling at fs = 32/44.1/48/
88.2/96/192 kHz
System clock frequency
• 128/192/256/384/512/768 fs
Single 5 V operating supply voltage
24-pin SSOP package
Molybdenum-gate CMOS process
PACKAGE DIMENSIONS
(Unit: mm)
24-pin SSOP
5.40 0.20
7.80 0.30
ORDERING INFORMATION
Device
0.10 0.10
+0.20
1.90
−0.10
0.36 0.10
0.10
1.80
SM5865AM
24-pin SSOP
ry
DVSS
1
24
OVERVIEW
PINOUT
AVSSA
RAP
IOUTA
IOUTAN
RAN
AVDDA
AVDDB
RBP
IOUTB
IOUTBN
RBN
AVSSB
S M 5 8 6 5 AM
TSTN
12
13
10.05 0.20
10.20 0.30
0.15
−
0.05
+
0.1
0.12
M
0.50 0.20
0 10
NIPPON PRECISION CIRCUITS—1
NPC [ NIPPON PRECISION CIRCUITS INC ]
