描述 Description

The PCM1804 is a high-performance, single-chip stereo A/D converter with fully differential analog voltage input. The PCM1804 uses a precision delta-sigma modulator and includes a linear phase antialias digital filter and high-pass filter (HPF) that removes dc offset from the input signal. The PCM1804 is suitable for a wide variety of mid- to high-grade consumer and professional applications, where excellent performance and 5-V analog supply and 3.3-V digital power-supply operation are required. The PCM1804 can achieve both PCM audio and DSD format due to the precision delta-sigma modulator. The PCM1804 is fabricated using an advanced CMOS process and is available in a small 28-pin SSOP package.

特性 Features

? 24-Bit Delta-Sigma Stereo A/D Converter
? High Performance:
? Dynamic Range: 112 dB (Typical)
? SNR: 111 dB (Typical)
? THD+N: -102 dB (Typical)

? High-Performance Linear Phase Antialias Digital Filter:
? Pass-Band Ripple: ±0.005 dB
? Stop-Band Attenuation: -100 dB

? Fully Differential Analog Input: ±2.5 V
? Audio Interface: Master- or Slave-Mode Selectable
? Data Formats: Left-Justified, I2S, Standard 24-Bit, and DSD
? Function:
? Peak Detection
? High-Pass Filter (HPF): -3 dB at 1 Hz, fS = 48 kHz

? Sampling Rate up to 192 kHz
? System Clock: 128 fS, 256 fS, 384 fS, 512 fS, or 768 fS
? Dual Power Supplies:
? 5 V for Analog
? 3.3 V for Digital

? Power Dissipation: 225 mW
? Small 28-Pin SSOP
? DSD Output: 1 Bit, 64 fS
? APPLICATIONS
? AV Amplifier
? MD Player
? Digital VTR
? Digital Mixer
? Digital Recorder

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