PCM2906B
具有线性输出和 S/PDIF 的、总线供电的立体声 USB 编解码器
The 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, "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.
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- On-Chip USB Interface:
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- With Full-Speed Transceivers
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- Fully Compliant with USB 2.0 Specification
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- Certified by USB-IF
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- Partially Programmable Descriptors1
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- USB Adaptive Mode for Playback
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- USB Asynchronous Mode for Record
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- Bus Powered
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- 16-Bit Delta-Sigma ADC and DAC
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- Sampling Rate:
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- DAC: 32, 44.1, 48 kHz
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- ADC: 8, 11.025, 16, 22.05, 32, 44.1, 48 kHz
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- On-Chip Clock Generator with Single 12-MHz Clock Source
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- S/PDIF Input/Output
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- Single Power Supply:
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- 5 V Typical VBUS
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- Stereo ADC:
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- Analog Performance at VBUS = 5 V:
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- THD+N = 0.01%
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- SNR = 89 dB
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- Dynamic Range = 89 dB
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- Decimation Digital Filter:
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- Passband Ripple = ±0.05 dB
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- Stop-Band Attenuation = -65 dB
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- Single-Ended Voltage Input
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- Antialiasing Filter Included
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- Digital HPF Included
* Stereo DAC:
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- Analog Performance at VBUS = 5 V:
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- THD+N = 0.005%
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- SNR = 96 dB
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- Dynamic Range = 93 dB
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- Oversampling Digital Filter:
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- Passband Ripple = ±
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- 0.1 dBStop-Band Attenuation = -43 dB
* Single-Ended Voltage Output
* Analog LPF Included
* Multifunctions:
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- Human Interface Device HID Function:
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- Volume and Mute Controls
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- Suspend Flag Function
* 28-Pin SSOP Package
* APPLICATIONS
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- USB Audio Speaker
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- USB Headset
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- USB Monitor
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- USB Audio Interface Box
1The 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.
