PCM2904数据手册集成电路（IC）的编解码器规格书PDF

描述 Description

The PCM2904/2906 is Texas Instruments single-chip USB stereo audio codec with USB-compliant full-speed protocol controller and S/PDIF (PCM2906 only). The USB protocol controller works with no software code, but the USB descriptors can be modified in some areas (for example, vendor ID/product ID). The PCM2904/2906 employs SpAct™ architecture, TI's unique system that recovers the audio clock from USB packet data. On-chip analog PLLs with SpAct enable playback and record with low clock jitter and with independent playback and record sampling rates.

特性 Features

• PCM2904: Without S/PDIF
• PCM2906: With S/PDIF
• On-Chip USB Interface:
• With Full-Speed Transceivers
• Fully Compliant With USB 1.1 Specification
• Certified by USB-IF
• Partially Programmable Descriptors
• USB Adaptive Mode for Playback
• USB Asynchronous Mode for Record
• Bus Powered

• 16-Bit Delta-Sigma ADC and DAC
• Sampling Rate:
• DAC: 32, 44.1, 48 kHz
• ADC: 8, 11.025, 16, 22.05, 32, 44.1, 48 kHz

• On-Chip Clock Generator With Single 12-MHz Clock Source
• Single Power Supply: 5 V Typical (VBUS)
• Stereo ADC
• Analog Performance at VBUS = 5 V
• THD+N = 0.01%
• SNR = 89 dB
• Dynamic Range = 89 dB

• Decimation Digital Filter
• Pass-Band Ripple = ±0.05 dB
• Stop-Band Attenuation = -65 dB

• Single-Ended Voltage Input
• Antialiasing Filter Included
• Digital LCF Included

• Stereo DAC:
• Analog Performance at VBUS = 5 V
• THD+N = 0.005%
• SNR = 96 dB
• Dynamic Range = 93 dB

• Oversampling Digital Filter
• Pass-Band Ripple = ±0.1 dB
• Stop-Band Attenuation = -43 dB

• Single-Ended Voltage Output
• Analog LPF Included

• Multifunctions:
• Human Interface Device (HID) Volume ± Control and Mute Control
• Suspend Flag

• Package: 28-Pin SSOP
• APPLICATIONS
• USB Audio Speaker
• USB Headset
• USB Monitor
• USB Audio Interface Box


The descriptor can be modified by changing a mask. SpAct is a trademark of Texas Instruments. System Two, Audio Precision are trademarks of Audio Precision, Inc.