SM5877AM Ver la hoja de datos (PDF) - Nippon Precision Circuits
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SM5877AM Datasheet PDF : 16 Pages
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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
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