PCM3002

16 位/20 位单端模拟输入/输出 SoundPlusTM 立体声音频编解码器

The and PCM3003 are low-cost, single-chip stereo audio codecs analog-to-digital and digital-to-analog converters with single-ended analog voltage input and output.

The ADCs and DACs employ delta-sigma modulation with 64-times oversampling. The ADCs include a digital decimation filter, and the DACs include an 8-times oversampling digital interpolation filter. The DACs also include digital attenuation, de-emphasis, infinite zero detection, and soft mute to form a complete subsystem. The PCM3002 and PCM3003 operate with left-justified ADC and right-justified DAC formats, while the PCM3002 also supports other formats, including the I2S data format. The PCM3002 and PCM3003 provide a power-down mode that operates on the ADCs and DACs independently.

The PCM3002 and PCM3003 are fabricated using a highly advanced CMOS process, and are available in a 24-pin SSOP package. The PCM3002 and PCM3003 are suitable for a wide variety of cost-sensitive consumer applications where good performance is required.

The PCM3002 programmable functions are controlled by software. The PCM3003 functions, which are controlled by hardware, include de-emphasis, power-down, and audio data format selections.

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Monolithic 20-Bit ADC and DAC

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16/20-Bit Input/Output Data

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Software Control: PCM3002

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Hardware Control: PCM3003

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Stereo ADC:

Single-Ended Voltage Input

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Antialiasing Filter

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64× Oversampling

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High Performance

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THD+N: &3150;86 dB

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SNR: 90 dB

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Dynamic Range: 90 dB

* Stereo DAC:

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Single-Ended Voltage Output

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Analog Low-Pass Filter

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64× Oversampling

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High Performance

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THD+N: –86 dB

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SNR: 94 dB

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Dynamic Range: 94 dB

* Special Features PCM3002, PCM3003

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Digital De-Emphasis: 32 kHz, 44.1 kHz, 48 kHz

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Power Down: ADC/DAC Independent

* Special Features PCM3002

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Digital Attenuation 256 Steps

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Soft Mute

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Digital Loopback

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Four Alternative Audio Data Formats

* Sampling Rate: 4 kHz to 48 kHz

* Single 3-V Power Supply

* Small Package: SSOP-24

* APPLICAONS

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DVC Applications

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DSC Applications

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Portable/Mobile Audio Applications

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