The PCM2906B is Texas Instruments" single-chip, USB, stereo audio codec with a USB-compliant full-speed protocol controller and S/PDIF. The USB protocol controller requires no software code, but the USB descriptors can be modified in some areas (for example, vendor ID and/or product ID). The PCM2906B 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 as well as independent playback and record sampling rates.
● On-Chip USB Interface:
● With Full-Speed Transceivers
● Fully Compliant with USB 2.0 Specification
● Certified by USB-IF
● Partially Programmable Descriptors(1)
● 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
● S/PDIF Input/Output
● 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:
● Passband Ripple = ±0.05 dB
● Stop-Band Attenuation = -65 dB
● Single-Ended Voltage Input
● Antialiasing Filter Included
● Digital HPF Included
● Stereo DAC:
● Analog Performance at VBUS = 5 V:
● THD+N = 0.005%
● SNR = 96 dB
● Dynamic Range = 93 dB
● Oversampling Digital Filter:
● Passband Ripple = ±
● 0.1 dBStop-Band Attenuation = -43 dB
● Single-Ended Voltage Output
● Analog LPF Included
● Multifunctions:
● Human Interface Device (HID) Function:
● Volume and Mute Controls
● Suspend Flag Function
● 28-Pin SSOP Package
● APPLICATIONS
● USB Audio Speaker
● USB Headset
● USB Monitor
● USB Audio Interface Box
●(1)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.
