SM5878AM Datasheet, PDF (1/16 Pages) Nippon Precision Circuits Inc – 3rd-order , 2-channel D/A converter

NIPPON PRECISION CIRCUITS INC.
SM5878AM/AV
3rd-order Σ∆, 2-channel D/A converter
OVERVIEW
The SM5878AM/AV is a 3rd-order Σ∆, 2-channel
D/A converter LSI for digital audio reproduction
equipment. It also incorporates an 8-times
oversampling digital filter and analog, post-converter
lowpass filters.
The SM5878AM/AV has digital deemphasis filter,
attenuator, and soft mute circuits built-in. Double-
speed operation and low-voltage operation are also
supported.
SM5878AM/AV D/A converter incorporates 3rd-
order ∑∆ modulator and DEM (Dynamic Element
Mating) circuits for high performance, even in the
presence of clock jitter.
The SM5878AM/AV operates from a 4.5 to 5.5 V
supply, and is available in 24-pin SSOP or VSOPs.
PINOUT
MUTE 1
DEEM 2
CKO 3
DVSS 4
BCKI 5
DI 6
DVDD 7
LRCI 8
TSTN 9
TO1 10
AVDDL 11
LO 12
24 ATCK
23 MODE
22 RSTN
21 DS
20 XVSS
19 XTO
18 XTI
17 XVDD
16 MUTEO
15 AVDDR
14 RO
13 AVSS
FEATURES
s 4.5 to 5.5 V operating supply voltage range
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
deemphasis 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 2nd-order analog, post-converter lowpass filters
built-in
s 24-pin SSOP/VSOP
s Molybdenum-gate CMOS process
ORDERING INFORMATIONS
DEVICE
SM5878AM
SM5878AV
PACKAGE
24 - pin SSOP
24 - pin VSOP
NIPPON PRECISION CIRCUITS—1