ΣDECO
SM5865CM
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 comprises
newly developed DEM (dynamic element matching) circuits, 3rd-order
Σ∆
noise shaper and 31-level quantizer
to realize super low total harmonic 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 for-
mat. 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 compatibility with 192kHz sampling format.
FEATURES
I
I
PINOUT
(Top view)
I
I
I
I
I
Mono-channel D/A converter LSI
High performance
• 0.00030% (–110.5dB) typ. THD + N
• 117dB typ. Dynamic range
• 120dB 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/
88.2/96/176.4/192kHz
System clock frequency
• 192/256/384/512/768/1024fs
Single 5V operating supply voltage
Molybdenum-gate CMOS process
24-pin SSOP package
DVSS
DI
BCKI
WCKI
IWSL
RSTN
TSTN
TO
DVDD
CKI
CKDVN
CVSS
1
24
AVSSA
RA
IOUTA
VBA
NC
AVDDA
AVDDB
RB
IOUTB
VBB
NC
12
13
AVSSB
ORDERING INFORMATION
Device
SM5865CM
Package
24-pin SSOP
PACKAGE DIMENSIONS
(Unit: mm)
Weight: 0.23g
5.40 ± 0.20
7.80 ± 0.30
10.05 ± 0.20
10.20 ± 0.30
+ 0.10
0.15
−
0.05
0.10 ± 0.10
0.12
M
+0.20
1.90
−0.10
0.8
0.10
0.36 ± 0.10
1.80
0 to10
0.50 ± 0.20
SEIKO NPC CORPORATION —1
SM5865CM
BLOCK DIAGRAM
TO
8
TSTN
7
RSTN
6
IWSL
5
WCKI
4
BCKI
3
DI
2
Input interface
9
DVDD
CKI
CKDVN
CVSS
10
11
12
Divider
Timing
control
Interpolation
1
DVSS
Noise shaper
Noise shaper
AVSSB
13
24
31 Level
DEM DAC
31 Level
DEM DAC
31 Level
DEM DAC
31 Level
DEM DAC
AVSSA
15
VBB
16
IOUTB
17
RB
18
AVDDB
19
AVDDA
21
VBA
22
IOUTA
23
RA
SEIKO NPC CORPORATION —2
SM5865CM
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
1. I
P
: Pull-up input
Name
DVSS
DI
BCKI
WCKI
IWSL
RSTN
TSTN
TO
DVDD
CKI
CKDVN
CVSS
AVSSB
NC
VBB
IOUTB
RB
AVDDB
AVDDA
NC
VBA
IOUTA
RA
AVSSA
I/O
1
–
I
I
I
Ip
Ip
Ip
O
–
I
Ip
–
–
–
O
O
I
–
–
–
O
O
I
–
Digital ground
Data input
Bit clock input
Word clock input
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 (half of the
input frequency).
System clock ground
Analog ground B
Leave open for no connection or connect with ground
1/2 supply output B
Inverse-phase analog output B
Built-in resistor connection B
Analog supply B
Analog supply A
Leave open for no connection or connect with ground
1/2 supply output A
In-phase analog output A
Built-in resistor connection A
Analog ground A
Description
SEIKO NPC CORPORATION —3
SM5865CM
SPECIFICATIONS
Absolute Maximum Ratings
DVSS = AVSSA = AVSSB = CVSS = 0V, DVDD = AVDDA = AVDDB
Parameter
Supply voltage range
Input voltage range
1
Storage temperature range
Power dissipation
1. Pins DI, BCKI, WCKI, CKDVN, IWSL, RSTN, TSTN.
Also applicable during supply switching.
Symbol
DVDD, AVDDA, AVDDB
V
IN
T
stg
P
D
Rating
−0.3
to 7.0
DVSS
−
0.3 to DVDD
+
0.3
−55
to 125
250
Unit
V
V
°C
mW
Recommended Operating Conditions
DVSS = AVSSA = AVSSB = CVSS = 0V, DVDD = AVDDA = AVDDB
Parameter
Supply voltage range
Symbol
DVDD, AVDDA, AVDDB
DVDD
−
AVDDA,
DVDD
−
AVDDB,
AVDDA
−
AVDDB,
DVSS
−
AVSSA,
DVSS
−
AVSSB,
AVSSA
−
AVSSB,
DVSS
−
CVSS,
AVSSA
−
CVSS,
AVSSB
−
CVSS
T
opr
Rating
4.5 to 5.5
Unit
V
Supply voltage variation
±0.1
V
Operating temperature range
−40
to 85
°C
SEIKO NPC CORPORATION —4
SM5865CM
DC Electrical Characteristics
Recommended operating conditions, unless otherwise specified.
Rating
Parameter
Symbol
Condition
min
f
CKI
= 11.2896MHz
DVDD, AVDDA, AVDDB
supply current
1
I
DD
f
CKI
= 16.9344MHz
f
CKI
= 24.576MHz
f
CKI
= 36.864MHz
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
4
1.
2.
3.
4.
5.
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
I
OH
=
−1mA
I
OL
= 1mA
V
IN
= DVDD
V
IN
= 0V
V
IN
= 0V
V
IN
= DVDD
V
IN
= 0V
V
IN
= DVDD
AC coupling
–
–
–
–
0.7
×
DVDD
–
1.0
2.4
–
DVDD
−
0.4
–
30
30
–
–
–
–
typ
7
10
15
21
–
–
–
–
–
–
–
60
60
5
–
–
–
max
11
14
19
26
–
0.3
×
DVDD
–
–
0.5
–
0.4
120
120
15
1.0
1.0
1.0
mA
mA
mA
mA
V
V
Vp-p
V
V
V
V
µA
µA
µA
µA
µA
µA
Unit
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.
SEIKO NPC CORPORATION —5
机器人开发
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