Audio Codec 2ADC / 2DAC 18-Bit 28-Pin SSOP T/R

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. 

Monolithic 18-Bit S 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 f_s, 384 f_s, 512 f_s
• 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