PCM3000

`MONOLITHIC 18-BIT ADC AND DAC
`16- OR 18-BIT INPUT/OUTPUT DATA
`STEREO ADC:
   Single-ended Voltage Input
   64X Oversampling
`High Performance:
   88dB    THD+N
      94dB    SNR
      94dB    Dynamic Range
    Digital High-Pass Filter
`STEREO DAC:
   Single-ended Voltage Output
   Analog Low Pass Filter
   64X Oversampling
`High Performance:
   90dB   THD+N
      98dB   SNR
      97dB   Dynamic Range
`SPECIAL FEATURES (PCM3000): Digital De-emphasis
   Digital Attenuation (256 Steps) Soft Mute
   Analog Loop Back
`SAMPLE RATE: Up to 48kHz
`SYSTEM CLOCK: 256f<sub>S</sub> , 384f<sub>S</sub> , 512f<sub>S</sub>
`SINGLE +5V POWER SUPPLY
`SMALL PACKAGE: SSOP-28

Supply Voltage
+V_DD , +V_CC 1, +V_CC 2 ..........................................................................+6.5V
Supply Voltage Differences....................................................................±0.1V
GND Voltage Differences........................................................................±0.1V
Digital Input Voltage........................................................0.3 to V_DD  + 0.3V
Analog Input Voltage...........................................0.3 to V_CC 1,V_CC 2 + 0.3V
Power Dissipation ...............................................................................300mW
Input Current ......................................................................................±10mA
Operating Temperature Range ............................................... 25 to +85
Storage Temperature............................................................ 55 to +125
Lead Temperature (soldering, 5s).........................................................+260
(reflow, 10s)......................................................................................... +235
Thermal Resistance, _JA .....................................................................100/W

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 PCM3000 employ delta-sigma modula-tion with 64X oversampling. The ADCs include a digital decimation filter and the DACs include an 8X 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-2 justified, right-justified, I S or DSP data formats.

PCM3000 can be programmed with a 3-wire serial interface for special features and data formats.

PCM3001 can be pin-programmed for data formats.

Fabricated on a highly advanced CMOS process, the PCM3000/3001 is suitable for a wide variety of cost-sensitive consumer applications where good perfor-mance is required. Applications of PCM3000 include sampling key-boards, digital mixers, mini-disc recorders, hard-disk recorders, karaoke systems, DSP-based car stereo, DAT recorders, and video conferencing.