描述 Description

The PCM3008 is a low cost single chip 16-bit stereo audio codec with single-ended analog voltage input and output. Both ADCs and DACs employ delta-sigma modulation with 64-times oversampling. ADCs include a digital decimation filter and digital high pass filter. DACs include an 8-times oversampling digital interpolation filter, digital de-emphasis filter and pop-noise free muting which works during the power down ON/OFF sequence. The PCM3008 accepts left-justified format for ADC, and right-justified format for DAC. Independent power-down modes for ADC and DAC are provided. The PCM3008 is suitable for a wide variety of cost-sensitive consumer applications where good performance is required. It is fabricated using a highly advanced CMOS process and is available in a small 16-pin TSSOP package.

特性 Features

? 16-Bit Delta-Sigma ADC and DAC
? Stereo ADC:
? Single-Ended Voltage Input
? Anti-Aliasing Filter Included
? High Performance
? THD+N: -84 dB
? SNR: 88 dB
? Dynamic Range: 88 dB
? 1/64× Decimation Digital Filter
? Passband Ripple: ±0.05 dB
? Stopband Attenuation: -65 dB
? Digital HPF Included

? Stereo DAC:
? Single-Ended Voltage Output
? Analog LPF and FIR Filter Included
? High Performance
? THD+N: -88 dB
? SNR: 92 dB
? Dynamic Range: 92 dB
? 8× Oversampling Digital Filter
? Passband Ripple: ±0.1 dB
? Stopband Attenuation: -43 dB

? Audio Data Format:
? ADC: 16-bit, Left-Justified
? DAC: 16-bit, Right-Justified

? Special Built-In Functions:
? Digital De-Emphasis: 32, 44.1, 48 kHz
? ADC/DAC Independent Power Down With Pop-Noise Free Muting

? Sampling Rate: 8 kHz to 48 kHz
? System Clock: 256fS, 384fS, 512fS
? Low Voltage Power Supply:
? 2.4 V TYP, 2.1 V MIN to 3.6 V MAX

? Low Power Dissipation:
? 32 mW at VCC = 2.4 V

? Package: 16-Pin TSSOP
? APPLICATIONS
? Digital Video Camera
? Portable MD Player
? Other Portable System