Описание
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.
- 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
- 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
