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 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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