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The PCM3002 and PCM3003 are low cost single chip stereo audio CODECs (analog-to-digital and digital-toanalog converters) with single-ended analog voltage input and output.
The ADCs and DACs employ delta-sigma modulation 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. PCM3002 and PCM3003 operate with left-justified, and right-justified formats, while the PCM3002 also supports the I2S data format.
PCM3002 and PCM3003 provide a power-down mode that operates on the ADCs and DACs independently. Fabricated on a highly advanced CMOS process, PCM3002 and PCM3003 are suitable for a wide variety of cost-sensitive consumer applications where good performance is required.
PCM3002's programmable functions are controlled by software and the PCM3003's functions include deemphasis, power down, and audio data format selections, which are controlled by hardware.
PCM3002 Maximum Ratings
Supply Voltage +VDD, +VCC1, +VCC2 ...................................................................... +6.5V Supply Voltage Differences ............................................................... ±0.1V GND Voltage Differences .................................................................. ±0.1V Digital Input Voltage ..................................................... 0.3 to VDD + 0.3V Analog Input Voltage .........................................0.3 to VCC1, VCC2 + 0.3V Power Dissipation .......................................................................... 300mW Input Current ................................................................................... ±10mA Operating Temperature Range ......................................... 25°C to +85°C Storage Temperature ...................................................... 55°C to +125°C Lead Temperature (soldering, 5s) .................................................. +260°C (reflow, 10s) ..................................................... +235°C
PCM3002 Features
`MONOLITHIC 20-BIT DS ADC AND DAC `16-/20-BIT INPUT/OUTPUT DATA `SOFTWARE CONTROL: PCM3002 `HARDWARE CONTROL: PCM3003 `STEREO ADC: Single-Ended Voltage Input 64X Oversampling High Performance THD+N: 86dB SNR: 90dB Dynamic Range: 90dB `STEREO DAC: Single-Ended Voltage Output Analog Low Pass Filter 64X Oversampling High Performance THD+N: 86dB SNR: 94dB Dynamic Range: 94dB `SPECIA`FEATURES Digita`De-emphasis Digita`Attenuation (256 Steps) Soft Mute Digita`Loop Back Power Down: ADC/DAC Independent ` SAMPLING RATE: Up to 48kHz ` SYSTEM CLOCK: 256fS, 384fS, 512fS ` SINGLE +3V POWER SUPPLY ` SMAL`PACKAGE: SSOP-24