FEATURES

· Monolithic 18-Bit DS 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

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. The

DACs 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.