Σ
DECO SM588
×
series
NIPPON PRECISION CIRCUITS INC.
Audio 3rd-order
Σ∆
D/A Converter
OVERVIEW
The
Σ
DECO SM588
×
series, fabricated using NPC’s Molybdenum-gate CMOS process, are D/A converter ICs
for digital audio, that provide all the basic converter functions in miniature 8-pin packages. They each feature
built-in 8-times oversampling digital filter,
Σ∆
jitter-compensated D/A converter, and post-analog lowpass fil-
ter converter stages required for digital audio. They can sample at up to 96kHz for 16 or 24-bit input word
length. A type with built-in deemphasis filter is also available for applications requiring deemphasis.
FEATURES
3-wire Input
I
I
2-wire Input with Deemphasis Filter
I
I
I
I
I
I
I
I
I
2-channel stereo configuration
256fs, 384fs, or 512fs system clock (applied by
product / version)
Input format
3-wire serial, MSB first, rear-packed
16 or 24-bit (applied by product / version)
8-times oversampling digital filter
• 32 dB stopband attenuation
• ±0.05 dB passband ripple
Σ∆
2-channel D/A converter
• 3rd-order noise shaper
• Oversampling operation
3rd-order post-analog lowpass filter
4.5 to 5.5 V supply voltage
8-pin SOP
Molybdenum-gate CMOS process
I
I
I
I
I
I
I
I
2-channel stereo configuration
256fs, 384fs, or 512fs system clock (applied by
product / version)
Input format
2-wire serial, MSB first, rear-packed
16 or 24-bit (applied by product / version)
Deemphasis filter (fs = 44.1 kHz sample rate)
8-times oversampling digital filter
• 32 dB stopband attenuation
• ±0.05 dB passband ripple
Σ∆
2-channel D/A converter
• 3rd-order noise shaper
• Oversampling operation
3rd-order post-analog lowpass filter
4.5 to 5.5 V supply voltage
8-pin SOP
Molybdenum-gate CMOS process
APPLICATIONS
I
Audio equipment
PINOUTS
3-wire input
DATA
BCKI
LRCI
CLK
2-wire input with built-in deemphasis filter
8
LO
VDD
VSS
DATA
DEEM
LRCI
CLK
1
1
8
LO
VDD
VSS
588
588
4
5
RO
4
5
RO
ORDERING INFORMATION
Device
SM5882AS
SM5883AS
SM5883BS
SM5885CS
NIPPON PRECISION CIRCUITS—1
8-pin SOP
Package