PCM2906B Texas instruments

PCM2906B

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PCM2906B

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Описание

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 (V_BUS)
Stereo ADC:
- Analog Performance at V_BUS = 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 V_BUS = 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.

Number of ADC channels	2
Number of DAC channels	2
Analog inputs	2
Sampling rate (max) (kHz)	48
Control interface	HID
Features	500-mA max power configuration, S/PDIF I/O
Analog outputs	2
Rating	Catalog
Operating temperature range (°C)	-25 to 85