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SM5866AS Datasheet

  • SM5866AS

  • D/A Converter for DSD and PCM

  • 586.23KB

  • NPC

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SM5866AS
D/A Converter for DSD and PCM
OVERVIEW
The SM5866AS is a D/A converter compatible with
both the DSD SACD signal format and the PCM
CD/DVD-Audio and similar formats. DSD employs
a 1-bit data stream, from a high-order
鈭單?/div>
conversion
at 64fs (fs = 44.1kHz), that contains high-level quan-
tization noise in the high-frequency band above
20kHz. The SM5866AS, in DSD reproduction, has a
DSD-dedicated FIR digital 铿乴ter that attenuates the
DSD quantization noise in the digital domain, and
the resulting multi-level signal is D/A converted. In
PCM reproduction, an oversampled PCM signal
input, provided using a SM5847AF or similar digital
铿乴ter, is converted to a multi-level signal by the 3rd-
order noise shaper and then the multi-level signal is
D/A converted.
FEATURES
I
I
PINOUT
(Top view)
I
I
I
I
I
I
I
I
I
Mono-channel multi-level D/A converter
High performance analog characteristics
鈥?DSD mode (typical values)
- THD + N: 鈥?09dB (0.00036%)
- D.R: 115dB
鈥?PCM mode (typical values)
- THD+N: 鈥?06dB (0.00050%)
- D.R: 112dB
2 selectable DSD digital 铿乴ters
PCM input mode
鈥?24-bit, MSB-铿乺st, right-justi铿乪d
鈥?8-times or 4-times oversampling of fs = 16k to
192kHz
System clock (CKI)
Maximum operating frequency: f
CKI
(max)
鈥?37.0MHz (note 1)
鈥?45.4MHz (note 2)
DSD mode fs = f
CKI
/512
鈥?typ. fs = 44.1kHz
鈥?max. fs = 52.7kHz (note 1)
鈥?max. fs = 88.7kHz (note 2)
PCM mode system clock
鈥?192/256/384/512/768fs
Operating voltage: 4.5 to 5.5V
Operating temperature: 鈥?0 to 85
掳
C
Package: 28-pin SOP
Molybdenum-gate CMOS process
TSTN
TO
DVDD
SDI
SBCKA
SBCKD
RSTN
DI
BCKI
WCKI
DVSS
BCPOL
DSPOL
CVDD
1
28
IMD1
IMD0
AVSSA
RA
IOUTA
IOUTAN
AVDDA
AVDDB
RB
IOUTB
IOUTBN
AVSSB
CVSS
14
15
CKI
PACKAGE DIMENSIONS
(Unit: mm)
Weight: 0.60g
+0
0.15
鈭?/div>
0 .1
.05
7.5 卤 0.2
Device
SM5866AS
Package
28-pin SOP
2.2 卤 0.1
1.27
0.4 卤 0.1
0.10
0.12
M
NIPPON PRECISION CIRCUITS INC.鈥?
0.05 卤 0.05
ORDERING INFORMATION
1.095TYP
18.7 卤 0.3
0 to 10
0.5 卤 0.2
(note 1) Under the operating conditions 1: 4.5 to 5.5V, 鈥?0 to 85
掳
C
(note 2) Under the operating conditions 2: 4.75 to 5.25V, 鈥?0 to 70
掳
C
9.9 卤 0.3

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