PCM3001

SoundPlusTM 立体声音频编解码器 18 位串行接口

The PCM3000/3001 is a low-cost, single-chip stereo audio codec analog-to-digital and digital-to-analog converter with single-ended analog voltage input and output. Both ADCs and DACs employ delta-sigma modu- lation with 64-times oversampling. The ADCs include a digital decimation filter and the DACs include an 8-times oversampling digital interpolation filter. TheDACs also include digital attenuation, de-emphasis, infinite zero detection and soft mute to form a complete subsystem. The PCM3000/3001 operates with left-justified, right-justified, I2S or DSP data formats.

The PCM3000 can be programmed with a three-wire serial interface for special features and data formats. The can be pin-programmed for data formats.

The PCM3000 and PCM3001 are fabricated using a highly advanced CMOS process and are available in a small 28-pin SSOP package. The PCM3000/3001 are suitable for a wide variety of cost-sensitive consumer applications where good performance is required.

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Monolithic 18-Bit ADC and DAC

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16- or 18-Bit Input/Output Data

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Accepts Seven Alternate Formats

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Stereo ADC:

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Single-Ended Voltage Input

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64× Oversampling Digital Filter

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Pass-Band Ripple: ±0.05 dB

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Stop-Band Attenuation: –65 dB

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High Performance:

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THD+N: –88 dB

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SNR: 94 dB

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Dynamic Range: 94 dB

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Digital High-Pass Filter

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Stereo DAC

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Single-Ended Voltage Outut

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Analog Low-Pass Filter

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8× Oversampling Digital Filter

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Pass-Band Ripple: ±0.17 dB

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Stop-Band Attenuation: 35 dB

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High Performance:

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THD+N: –90 dB

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SNR: 98 dB

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Dynamic Range: 97 dB

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Special Features PCM3000

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Digital De-Emphasis

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Digital Attenuation 256 Steps

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Soft Mute

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Digital Loopback

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Sample Rate: 4 kHz to 48 kHz

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System Clock: 256 fs, 384 fs, 512 fs

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Single 5-V Power Supply

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Small Package: SSOP-28

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APPLICA ONS

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Sampling Keyboards

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Digital Mixers

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Mini-Disk Recorders

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Hard-Disk Recorders

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Karaoke Systems

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DSP-Based Car Stereo

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DAT Recorders

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Video Conferencing

System Two, Audio Precision are trademarks of Audio Precision, Inc.

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