NPC SM5865CM Datasheet
Σ
DECO SM5865CM
NIPPON PRECISION CIRCUITS INC.
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 format. The output
stage employs differential current outputs for highaccuracy 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.
FEATURES
D/A Converter for Digital Audio
PINOUT
(Top view)
DVSS
DI
BCKI
WCKI
IWSL
RSTN
TSTN
TO
DVDD
CKI
CKDVN
CVSS
1
SM5
865 M
C
12
24
13
AVSSA
RA
IOUTA
VBA
N.C.
AVDDA
AVDDB
RB
IOUTB
VBB
N.C.
AVSSB
■
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
ORDERING INFORMATION
Device Package
SM5865CM 24-pin SSOP
PACKAGE DIMENSIONS
(Unit: mm)
Weight: 0.23g
24-pin SSOP
7.80 0.30
5.40 0.20
10.05 0.20
10.20 0.30
0.8
0.10
0.36 0.10
0.12
M
1.80
+0.20
−0.10
1.90
0.10 0.10
0.50 0.20
0.15
0.10
+
0.05
−
010
NIPPON PRECISION CIRCUITS—1
BLOCK DIAGRAM
SM5865CM
DVDD
CKI
CKDVN
CVSS
AVSSB
TO TSTN
9
10
Divider
11
12
13
RSTN
Timing
control
Noise shaper
31 Level
DEM DAC
IWSL WCKI BCKI DI
Input interface
Interpolation
31 Level
DEM DAC
31 Level
DEM DAC
2345678
Noise shaper
31 Level
DEM DAC
1
DVSS
24
AVSSA
15 16 17 18 19 21 22 23
VBB
IOUTB
RB
AVDDB
AVDDA
VBA
IOUTA
NIPPON PRECISION CIRCUITS—2
RA
SM5865CM
PIN DESCRIPTION
Number Name I/O Description
1 DVSS – Digital ground
2 DI I Data input
3 BCKI I Bit clock input
4 WCKI I Word clock input
5 IWSL Ip Input data word length select. 24-bit when HIGH, and 20-bit when LOW.
6 RSTN Ip System reset. Reset when LOW.
7 TSTN Ip Test pin. Tie HIGH or leave open for normal operation.
8 TO O Test output
9 DVDD – Digital supply
10 CKI I System clock input
11 CKDVN Ip
12 CVSS – System clock ground
13 AVSSB – Analog ground B
14 N. C. – Leave open for no connection or connect with ground
15 VBB O 1/2 supply output B
16 IOUTB O Inverse-phase analog output B
17 RB I Built-in resistor connection B
18 AVDDB – Analog supply B
19 AVDDA – Analog supply A
20 N. C. – Leave open for no connection or connect with ground
21 VBA O 1/2 supply output A
22 IOUTA O In-phase analog output A
23 RA I Built-in resistor connection A
24 AVSSA – Analog ground A
System clock frequency divider ratio select. 1 when HIGH (no division), and 2 when LOW (half of the
input frequency).
I
: Pull-up input
P
NIPPON PRECISION CIRCUITS—3
−
−
°
−
°
SM5865CM
SPECIFICATIONS
Absolute Maximum Ratings
DVSS = AVSSA = AVSSB = CVSS = 0 V, DVDD = AVDDA = AVDDB
Parameter Symbol Rating Unit
Supply voltage range DVDD, AVDDA, AVDDB
Input voltage range
Storage temperature range T
Power dissipation P
1. Pins DI, BCKI, WCKI, CKDVN, IWSL, RSTN, TSTN.
Also applicable during supply switching.
Recommended Operating Conditions
DVSS = AVSSA = AVSSB = CVSS = 0 V, DVDD = AVDDA = AVDDB
1
V
IN
stg
D
0.3 to 7.0 V
DVSS − 0.3 to DVDD + 0.3 V
55 to 125
250 mW
C
Parameter Symbol Rating Unit
Supply voltage range DVDD, AVDDA, AVDDB 4.5 to 5.5 V
DVDD − AVDDA,
DVDD − AVDDB,
AVDDA − AVDDB,
Supply voltage variation
Operating temperature range T
DVSS − AVSSA,
DVSS − AVSSB,
AVSSA − AVSSB,
DVSS − CVSS,
AVSSA − CVSS,
AVSSB − CVSS
opr
±0.1 V
40 to 85
C
NIPPON PRECISION CIRCUITS—4
SM5865CM
DC Electrical Characteristics
Recommended operating conditions, unless otherwise specified.
Parameter Symbol Condition
DVDD, AVDDA, AVDDB
supply current
1
CKI HIGH-level input voltage V
CKI LOW-level input voltage V
CKI input voltage V
HIGH-level input voltage
LOW-level input voltage
HIGH-level output voltage
LOW-level output voltage
2
2
3
3
CKI HIGH-level input current I
CKI LOW-level input current I
LOW-level input current
HIGH-level input leakage current
LOW-level input leakage current
HIGH-level input leakage current
4
5
5
4
I
V
V
V
V
I
I
I
I
DD
IHC
ILC
INAC
IH
IL
OH
OL
IHC
ILC
IL2
IH1
IL1
IH2
1. No output load, NPC-standard input data pattern.
2. Pins DI, BCKI, WCKI, CKDVN, IWSL, RSTN, TSTN.
3. Pin TO.
4. Pins CKDVN, IWSL, RSTN, TSTN.
5. Pins DI, BCKI, WCKI.
Rating
Unit
min typ max
f
= 11.2896 MHz – 7 11 mA
CKI
f
= 16.9344 MHz – 10 14 mA
CKI
f
= 24.576 MHz – 15 19 mA
CKI
f
= 36.864 MHz – 21 26 mA
CKI
0.7 × DVDD – – V
– – 0.3 × DVDD V
AC coupling 1.0 – – Vp-p
2.4 – – V
– – 0.5 V
I
= − 1 mA DVDD − 0.4 – – V
OH
I
= 1 mA – – 0.4 V
OL
V
= DVDD 30 60 120 µA
IN
V
= 0 V 30 60 120 µA
IN
V
= 0 V – 5 15 µA
IN
V
= DVDD – – 1.0 µA
IN
V
= 0 V – – 1.0 µA
IN
V
= DVDD – – 1.0 µA
IN
NIPPON PRECISION CIRCUITS—5
AC Electrical Characteristics
System clock Input (CKI)
SM5865CM
Parameter Symbol
CKI clock frequency f
HIGH-level clock pulsewidth t
LOW-level clock pulsewidth t
CKI
t
CWL
Internal System Clock
Parameter Symbol Condition
Internal system clock frequency f
SYS
CKI
CWH
CWL
1/f
CKI
min typ max
5 – 60 MHz
5––ns
5––ns
t
CWH
min typ max
5 – 46 MHz
Rating
Rating
V
IHC
0.5∗DVDD
V
ILC
Unit
Unit
Internal system clock frequency is the same as the CKI clock frequency when CKDVN = HIGH.
Internal system clock frequency is half the CKI clock frequency when CKDVN = LOW.
Reset Input (RSTN)
Parameter Symbol Condition
RSTN LOW-level pulsewidth t
RSTN
At power ON 1 – – µs
After power ON 100 – – ns
Rating
min typ max
Unit
NIPPON PRECISION CIRCUITS—6
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