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SM5885CS

Audio 3rd-order Σ∆ D/A Converter

Nippon Precision Circuits  

NIPPON PRECISION CIRCUITS INC.

ΣDECO SM588× series

Audio 3rd-order Σ∆ D/A Converter

OVERVIEW

The ΣDECO 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 2-channel stereo configuration

I 256fs, 384fs, or 512fs system clock (applied by

product / version)

I Input format

3-wire serial, MSB first, rear-packed

16 or 24-bit (applied by product / version)

I 8-times oversampling digital filter

• 32 dB stopband attenuation

• ±0.05 dB passband ripple

I Σ∆ 2-channel D/A converter

• 3rd-order noise shaper

• Oversampling operation

I 3rd-order post-analog lowpass filter

I 4.5 to 5.5 V supply voltage

I 8-pin SOP

I Molybdenum-gate CMOS process

APPLICATIONS

I Audio equipment

PINOUTS

2-wire Input with Deemphasis Filter

I 2-channel stereo configuration

I 256fs, 384fs, or 512fs system clock (applied by

product / version)

I Input format

2-wire serial, MSB first, rear-packed

16 or 24-bit (applied by product / version)

I Deemphasis filter (fs = 44.1 kHz sample rate)

I 8-times oversampling digital filter

• 32 dB stopband attenuation

• ±0.05 dB passband ripple

I Σ∆ 2-channel D/A converter

• 3rd-order noise shaper

• Oversampling operation

I 3rd-order post-analog lowpass filter

I 4.5 to 5.5 V supply voltage

I 8-pin SOP

I Molybdenum-gate CMOS process

3-wire input

2-wire input with built-in deemphasis filter

DATA 1

BCKI

LRCI

CLK 4

8 LO

VDD

VSS

5 RO

DATA 1

DEEM

LRCI

CLK 4

8 LO

VDD

VSS

5 RO

ORDERING INFORMATION

Device

SM5882AS

SM5883AS

SM5883BS

SM5885CS

Package

8-pin SOP

NIPPON PRECISION CIRCUITS—1

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