描述 Description

The PCM1804-Q1 device is a high-performance, single-chip stereo A/D converter with fully differential analog voltage input which 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-Q1 device 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-Q1 device can achieve both PCM audio and DSD format due to the precision delta-sigma modulator. The PCM1804-Q1 device is fabricated using an advanced CMOS process and is available in a small 28-pin SSOP package.

特性 Features

? Qualified for Automotive Applications
? AEC-Q100 Test Guidance With the Following Results:
- Device Temperature Grade 3: –40°C to 85°C Ambient Operating Temperature Range
? Device HBM ESD Classification Level H2
? Device CDM ESD Classification Level C3B
? 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