SM5865AM
NIPPON PRECISION CIRCUITS INC.
D/A Converter
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.
lim
Package
0.8
FEATURES
s
s
s
s
pre
s
s
s
s
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
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
ina
ry
(Top view)
DVSS
DI
BCKI
1
24
OVERVIEW
PINOUT
AVSSA
RAP
IOUTA
RAN
WCKI
IWSL
RSTN
TO
IOUTAN
AVDDA
AVDDB
RBP
IOUTB
RBN
S M 5 8 6 5 AM
TSTN
DVDD
CKI
IOUTBN
AVSSB
CKDVN
CVSS
12
13
PACKAGE DIMENSIONS
(Unit: mm)
24-pin SSOP
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
SM5865AM
BLOCK DIAGRAM
TO
8
TSTN
7
RSTN
6
IWSL
5
WCKI
4
BCKI
3
DI
2
9
DVDD
CKI
CKDVN
CVSS
10
11
12
Divider
Timing
control
Noise shaper
lim
23 Level
DEM DAC
23 Level
DEM DAC
14
15
16
17
18
19
20
RBN
IOUTBN
IOUTB
RBP
AVDDB
AVDDA
AVSSB
13
pre
ina
ry
Input interface
Interpolation
1
DVSS
Noise shaper
24
23 Level
DEM DAC
23 Level
DEM DAC
AVSSA
21
IOUTAN
22
IOUTA
23
RAP
RAN
NIPPON PRECISION CIRCUITS—2
SM5865AM
PIN DESCRIPTION
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
I
P
: Pull-up input
Name
DVSS
DI
BCKI
WCKI
IWSL
RSTN
TSTN
TO
DVDD
CKI
CKDVN
CVSS
AVSSB
RBN
IOUTBN
IOUTB
RBP
AVDDB
AVDDA
RAN
I/O
–
I
I
I
Ip
Ip
Ip
O
–
I
Ip
–
–
I
O
O
I
–
–
I
Digital ground
Data input
Bit clock input
Word clock input
Description
Input data word length select. 24-bit when HIGH, and 20-bit when LOW.
System reset. Reset when LOW.
Test pin. Tie HIGH or leave open for normal operation.
Test output
Digital supply
System clock input
System clock frequency divider ratio select. 1 when HIGH (no division), and 2 when LOW.
System clock ground
Analog ground B
Built-in resistor connection B
Inverse-phase analog output B
In-phase analog output B
Built-in resistor connection B
Analog supply B
Analog supply A
IOUTAN
IOUTA
RAP
AVSSA
pre
NIPPON PRECISION CIRCUITS—3
lim
Built-in resistor connection A
O
Inverse-phase analog output A
In-phase analog output A
O
I
Built-in resistor connection A
Analog ground A
–
ina
ry
SM5865AM
SPECIFICATIONS
Absolute Maximum Ratings
DV
SS
= AV
SSA
= AV
SSB
= CV
SS
= 0 V, DV
DD
= AV
DDA
= AV
DDB
Parameter
Supply voltage range
Input voltage range
1
Storage temperature range
Power dissipation
Soldering temperature
Soldering time
1. Pins DI, BCKI, WCKI, CKDVN, IWSL, RSTN, TSTN.
Also applicable during supply switching.
Symbol
DV
DD
, AV
DDA
, AV
DDB
V
IN
Rating
−
0.3 to 7.0
DV
SS
−
0.3 to DV
DD
+
0.3
−
55 to 125
250
255
10
Unit
V
V
Recommended Operating Conditions
DV
SS
= AV
SSA
= AV
SSB
= CV
SS
= 0 V, DV
DD
= AV
DDA
= AV
DDB
Parameter
Supply voltage range
Symbol
lim
T
opr
Supply voltage variation
Operating temperature range
pre
NIPPON PRECISION CIRCUITS—4
ina
ry
T
stg
P
D
°
C
mW
°
C
s
T
sld
t
sld
Rating
Unit
V
DV
DD
, AV
DDA
, AV
DDB
DV
DD
−
AV
DDA
,
DV
DD
−
AV
DDB
,
AV
DDA
−
AV
DDB
,
DV
SS
−
AV
SSA
,
DV
SS
−
AV
SSB
,
AV
SSA
−
AV
SSB
,
DV
SS
−
CV
SS
,
AV
SSA
−
CV
SS
,
AV
SSB
−
CV
SS
4.5 to 5.5
±0.1
V
−
40 to 85
°
C
SM5865AM
DC Electrical Characteristics
Recommended operating conditions, unless otherwise specified
Rating
Parameter
DVDD supply current
1
AVDDA, AVDDB supply current
1
CKI HIGH-level input voltage
CKI LOW-level input voltage
CKI input voltage
HIGH-level input voltage
2
LOW-level input voltage
2
HIGH-level output voltage
3
LOW-level output voltage
3
CKI HIGH-level input current
CKI LOW-level input current
LOW-level input current
4
HIGH-level input leakage current
5
LOW-level input leakage current
5
HIGH-level input leakage current
6
1.
2.
3.
4.
5.
6.
Symbol
I
DDD
I
DDA
V
IHC
V
ILC
V
INAC
V
IH
V
IL
V
OH
V
OL
I
IHC
I
ILC
I
IL2
I
IH1
I
IL1
I
IH2
Condition
min
typ
max
mA
mA
V
Unit
pre
NIPPON PRECISION CIRCUITS—5
lim
DV
DD
= AV
DDA
= AV
DDB
= 5 V, system clock input frequency f
CKI
= 16.9344 MHz, no output load, NPC-standard input data pattern.
Pins DI, BCKI, WCKI, CKDVN, IWSL, RSTN, TSTN.
Pin TO.
Pins CKDVN, IWSL, RSTN, TSTN.
Pins DI, BCKI, WCKI.
Pins CKDVN, IWSL, RSTN, TSTN.
ina
ry
0.7V
DD
–
–
–
–
0.3V
DD
–
V
AC coupling
1.0
–
V
2.4
–
–
–
V
–
0.5
–
V
I
OH
=
−
1 mA
I
OL
= 1 mA
DV
DD
−
0.4
–
–
V
–
0.4
V
V
IN
= DV
DD
V
IN
= 0 V
V
IN
= 0 V
30
60
120
µA
30
–
60
9
120
18
µA
µA
V
IN
= DV
DD
–
–
1.0
µA
V
IN
= 0 V
–
–
1.0
µA
V
IN
= DV
DD
–
–
1.0
µA
TBD
嵌入式系统
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