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PDF SM5877AM Data sheet ( Hoja de datos )
| Número de pieza | SM5877AM | |
| Descripción | 3rd-order / 2-channel D/A Converter | |
| Fabricantes | Nippon Precision Circuits Inc | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SM5877AM (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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NIPPON PRECISION CIRCUITS INC.
SM5877AM
3rd-order Σ∆, 2-channel D/A Converter
OVERVIEW
The SM5877AM is a 3rd-order Σ∆, 2-channel D/A
converter LSI for digital audio reproduction equip-
ment. It also incorporates an 8-times oversampling
digital filter and analog, post-converter lowpass fil-
ters.
The SM5877AM has digital deemphasis filter, atten-
uator, and soft mute circuits built-in. Double-speed
operation and low-voltage operation are also sup-
ported.
The SM5877AM operates from a 2.7 to 5.5 V supply,
and is available in 24-pin SSOPs.
FEATURES
s 2.7 to 5.5 V operating supply voltage range
s 4.5 to 5.5 V operating supply voltage range for
double-speed mode
s 44.1 kHz sampling frequency
s Normal (384fs) and double-speed (192fs),
16.9344 MHz system clock
s 16.9344 MHz crystal oscillator circuits built-in
s 16-bit, MSB first, rear-packed serial data input
format (≤ 64fs bit clock)
s 8-times oversampling digital filter
• 32 dB stopband attenuation
• ±0.05 dB passband ripple
s Deemphasis filter operation
• 36 dB stopband attenuation
• −0.09 to +0.23 dB deviation from ideal deem-
phasis filter characteristics
s Attenuator
• 6-bit attenuator (64 steps)
• Soft mute function when MODE is HIGH
(approx. 1024/fs total muting time)
s Built-in infinity-zero detector
s Σ∆ 2-channel D/A converter
• 3rd-order noise shaper
• 32fs oversampling (16fs for double-speed
mode)
s 3rd-order analog, post-converter lowpass filters
built-in (165 kHz cut-off frequency)
s 24-pin SSOP
s Molybdenum-gate CMOS process
PINOUT
MUTE 1
24 ATCK
DEEM 2
23 MODE
CKO 3
22 RSTN
DVSS 4
21 DS
BCKI 5
20 XVSS
DI 6
DVDD 7
19 XTO
SM5877AM
18 XTI
LRCI 8
17 XVDD
TSTN 9
16 MUTEO
TO1 10
15 AVDDR
AVDDL 11
14 RO
LO 12
13 AVSS
PACKAGE DIMENSIONS
Unit: mm
24-pin SSOP
10.05 0.20
10.20 0.30
0.7 0.8 0.36 0.10
0.15 +− 00..105
0.50 0.20
0 10
Package Marking
SM5 8 7 7 AM
NIPPON PRECISION CIRCUITS—1
1 page  
SM5877AM
Low-voltage: DVSS = AVSS = XVSS = 0 V, DVDD = AVDD = XVDD = 2.7 to 4.5 V, AVDD = AVDDL = AVDDR,
Ta = −20 to 70 °C
Parameter
DVDD digital supply current1
XVDD system clock supply
current1
AVDD analog supply current1
XTI HIGH-level input voltage
XTI LOW-level input voltage
XTI AC-coupled input voltage
HIGH-level input voltage3
LOW-level input voltage3
HIGH-level output voltage4
LOW-level output voltage4
CKO HIGH-level output voltage
Symbol
IDDD
IDDX
IDDA2
VIH1
VIL1
VINAC
VIH2
VIL2
VOHA
VOLA
VOHC
Condition
Clock input
Clock input
IOH = −0.5 mA
IOL = 0.5 mA
IOH = −0.5 mA
Rating
min typ
–6
–1
–
0.7XVDD
–
0.3XVDD
2.4
–
AVDD −
0.4
–
DVDD −
0.4
1
–
–
–
–
–
–
–
–
CKO LOW-level output voltage
XTI HIGH-level input current
XTI LOW-level input current
LOW-level input current4
Input leakage current4
VOLC
IIH1
IIL1
IIL2
ILH
IOL = 0.5 mA
VIN = XVDD
VIN = 0 V
VIN = 0 V
VIN = DVDD
––
–4
–4
–4
––
1. DVDD = AVDD = XVDD = 3 V, DS = 0 V (normal speed), XTI clock input frequency fXTI = 16.9344 MHz, no output load.
2. IDDA is the total current.
3. Pins MUTE, DEEM, BCKI, DI, LRCI, TSTN, DS, RSTN, MODE and ATCK.
4. Pins TO1 and MUTEO.
max
9
3
2
–
0.3XVDD
–
–
0.5
–
0.4
–
0.4
15
15
15
1.0
Unit
mA
mA
mA
V
V
Vp-p
V
V
V
V
V
V
µA
µA
µA
µA
AC Electrical Characteristics
Normal-voltage: DVSS = AVSS = XVSS = 0 V, DVDD = AVDD = XVDD = 4.5 to 5.5 V, AVDD = AVDDL =
AVDDR, Ta = −40 to 85 °C
Low-voltage: DVSS = AVSS = XVSS = 0 V, DVDD = AVDD = XVDD = 2.7 to 4.5 V, AVDD = AVDDL = AVDDR,
Ta = −20 to 70 °C
System clock (XTI)
Crystal Oscillator
Parameter
Oscillator frequency
Symbol
fOSC
Rating
min typ max
4.0
16.9344
17.8
Unit
MHz
NIPPON PRECISION CIRCUITS—5
5 Page 
SM5877AM
AC Measurement Circuit and Conditions
Measurement circuit block diagram
Signal
generator
CKO (384fs)
BCK
LRCK (fs)
DATA
Evaluation
board
Left channel
Right channel
Left/Right
channel selector
fs = 44.1 kHz
DATA = 16 bits
NF Corporation 3346A.
10 kΩ input impedance
Distortion
analyzer
Shibasoku AD725C.
RMS measurement
Measurement conditions
Parameter1
Total harmonic distortion
Output level
Dynamic range
Signal-to-noise ratio
Symbol
THD + N
Vout
DR
S/N
Channel separation
Ch. Sep
1. Pins LO and RO should have an output load of 10 kΩ (min).
3346A left/right-channel
selector switch
AD725C distortion analyzer
with built-in filter
THRU
D-RANGE
THRU
THRU
20 kHz lowpass filter ON
400 Hz highpass filter OFF
20 kHz lowpass filter ON
400 Hz highpass filter OFF
JIS A filter ON
20 kHz lowpass filter ON
400 Hz highpass filter OFF
NIPPON PRECISION CIRCUITS—11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet SM5877AM.PDF ] | |
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