PCM3000数据手册集成电路（IC）的编解码器规格书PDF

描述 Description

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 PCM3001 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.

特性 Features

• Monolithic 18-Bit ADC and DAC
• 16- or 18-Bit Input/Output Data
• Accepts Seven Alternate Formats
• Stereo ADC:
• Single-Ended Voltage Input
• 64× Oversampling Digital Filter
• Pass-Band Ripple: ±0.05 dB
• Stop-Band Attenuation: –65 dB

• High Performance:
• THD+N: –88 dB
• SNR: 94 dB
• Dynamic Range: 94 dB

• Digital High-Pass Filter

• Stereo DAC
• Single-Ended Voltage Outut
• Analog Low-Pass Filter
• 8× Oversampling Digital Filter
• Pass-Band Ripple: ±0.17 dB
• Stop-Band Attenuation: 35 dB

• High Performance:
• THD+N: –90 dB
• SNR: 98 dB
• Dynamic Range: 97 dB

• Special Features (PCM3000)
• Digital De-Emphasis
• Digital Attenuation (256 Steps)
• Soft Mute
• Digital Loopback

• Sample Rate: 4 kHz to 48 kHz
• System Clock: 256 fs, 384 fs, 512 fs
• Single 5-V Power Supply
• Small Package: SSOP-28
• APPLICATIONS
• Sampling Keyboards
• Digital Mixers
• Mini-Disk Recorders
• Hard-Disk Recorders
• Karaoke Systems
• DSP-Based Car Stereo
• DAT Recorders
• Video Conferencing


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